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08/21/2001 (2) e e e . . EXHIBIT D To the Minutes dated August 21, 2001 located in Book 1147 CITY OF MONR-OE ST ANDAR-D SPECIFICATIONS AND DETAIL MANUAL Iii '.>1.",..:. CITY OF MONROE POST OFFICE ßOX 69 MONROE, NC 28111-0069 300 W. CROWELL ST MONROE, NC 28112 PHONE: (704) 282-4515 FAX: (704) 282-4735 e e THIS PAGE IS INTENTIONALLY LEFT BLANK e e e · e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL PREFACE This manual, entitled City of Monroe Standard Specifications and Detail Manual, sets forth the minimum acceptable criteria for public and private roadway facilities, storm drainage structures, stormwater control structures, water mains, and sewer mains within the City of Monroe. Deviations or variances from these standards may be considered; however, it shall be the responsibility of the applicant to demonstrate to the satisfaction of the City's Engineering Director or the City's Water Resources Director that the proposed variance meets or exceeds the minimum acceptable criteria. Any proposed waiver of a standard provision may only be made according to the procedures set forth in this manual. Policies and technical criteria not specifically addressed in this document shall follow the provisions of the latest editions of the American Association of State Highway and Transportation Officials' "A Policy on Geometric Design of Highways and Streets", and the "Standard Specifications for Roads and Structures" of the North Carolina Department of Transportation. Preface e e THIS PAGE IS INTENTIONALLY LEFT BLANK e - e e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 01.00 01.01 01.02 01.03 01.04 01.05 01.05.01 01.05.02 01.06 01.06.01 01.06.02 01.07 01.08 01.09 01.10 01.11 02.00 02.01 02.01.0 I 02.01.02 02.01.03 02.01.04 02.01.05 02.02 02.02.01 02.02.02 02.02.03 02.02.04 02.02.05 02.02.06 02.02.07 02.02.08 02.02.09 02.02.10 02.03 02.03.0 I 02.03.02 02.03.03 02.03.04 02.03.05 02.03.06 03.00 03.01 03.01.01 03.01.02 03.01.03 03.01.04 03.02 03.02.01 03.02.02 03.03 03.03.01 03.03.02 TABLE OF CONTENTS GENERAL DEFINITIONS ABBREVIA TrONS APPLICABLE DIVISIONS, AND STANDARDS OF THIS SECTION GENERAL DEVELOPMENT NOTES DEVELOPER AND CONTRACTOR REQUIREMENTS ALL DEVELOPMENT SUBDIVISION DEVELOPMENT SAFETY OSHA STANDARDS HEALTH AND SAFETY HAZARDS ROADW A Y AND STORM DRAINAGE CONSTRUCTION PLAN REQUIREMENTS INSPECTIONS WARRANTY AS-BUILT DRAWING REQUIREMENTS CONCRETE MONUMENTS 01-1 01-3 01-5 01-7 01-8 01-8 01-8 01-10 01-10 01-10 01-10 01-14 01-16 01·17 01-17 STREETS GENERAL STREET CLASSIFICA nONS STREET NAMES TRAFFIC STUDIES NCDOT DRIVEWAY PERMIT AND ENCROACHMENT REQUIREMENTS CITY OF MONROE DRIVEWAY PERMIT AND OTHER DRIVEWAY INFORMATION DESIGN GENERAL ROADWAY DESIGN CRITERIA SUPERELEV ATION STORM DRAINAGE SUBDIVISION ENTRANCE SIGNS, MARKERS, AND LANDSCAPED AREAS OFF-STREET PARKING NON-SINGLE FAMILY SINGLE LOT DEVELOPMENT REQUIREMENTS STREET NAME IDENTIFICATION SIGNS CONSTRUCTION PLANS REQUIREMENTS FOR STREET IMPROVEMENTS EXEMPTIONS FOR REQUIRED STREET IMPROVEMENTS CONSTRUCTION STANDARD SPECIFICATIONS AND PLAN REQUIREMENTS INSPECTIONS BY DEVELOPER INSPECTIONS BY CITY MATERIALS CONSTRUCTION NOTES ROADW A Y CONSTRUCTION TOLERANCES 02-1 02-1 02-2 02-2 02-2 02-3 02-3 02-3 02-6 02-6 02-6 02-7 02-9 02- I 0 02-10 02-10 02-11 02-11 02-11 02-1 ¡ 02-12 02·12 02-12 02-14 EROSION AND SEDIMENTATION CONTROL GENERAL REQUIREMENTS COMPUTATIONS SCHEDULING CONSTRUCTION SEQUENCE DESIGN TEMPORARY MEASURES PERMANENT MEASURES CONSTRUCTION CONSTRUCTION NOTES SEEDING REQUIREMENTS 03-1 03-1 03-1 03-2 03-2 03-3 03·3 03-4 03-5 03-5 03-6 11 Table of Contents CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 04.00 STORM DRAINAGE COLLECTION FACILITIES 04.01 04.02 04.02.01 04.02.02 04.02.03 04.03 04.03.0 I 04.03.02 04.03.03 04.03.04 04.03.05 05.00 05.01 05.01.01 05.01.02 05.01.03 05.()! .04 05.01.05 05.01.06 05.02 05.02.01 05.02.02 05.03 05.04 06.00 06.01 06.02 07.00 07.01 07.02 07.03 07.04 07.05 07.06 07.06.01 07.06.02 07.07 07.08 07.09 07.10 07.11 07.12 07.13 07.14 07.15 07.16 07.17 07.18 GENERAL DESIGN DESIGN CRITERIA HYDROLOGIC ANALYSIS CONSTRUCTION PLANS CONSTRUCTION STANDARD SPECIFICATIONS AND PLAN REQUIREMENTS INSPECTIONS BY DEVELOPER INSPECTIONS BY CITY MA TERlALS CONSTRUCTION NOTES 04-1 04-2 04-2 04-4 04-5 04·5 04-5 04-5 04-5 04-6 04-6 STORMWATER CONTROL STRUCTURES GENERAL 05-1 GENERAL NOTES 05-1 EXEMPTIONS 05-1 RIGHT-OF-ENTRY 05-1 STORMW A TER MANAGEMENT PLAN REQUIREMENTS 05-1 STORMW A TER MANAGEMENT IMPROVEMENTS AND MAINTENANCE 05-3 STORM WATER CONTROL REQUIREMENTS 05-3 RETENTION AND DETENTION PONDS 05-4 GENERAL POND DEVELOPMENT NOTES 05·4 PROJECT PROVISIONS FOR CONSTRUCTION OF WATERSHED POND AND OUTLET CONTROL STRUCTURE 05-4 STREAM PROTECTION AND BUFFER ZONES 05-6 OTHER PRACTICES 05-7 LANDSCAPING GENERAL ACCEPTED TREES FOR STREET TREE PLANTINGS 06·1 06-1 PERMITS, CHECKLISTS, AND FORMS PERMIT CONTACT INFORMATION DEVELOPMENT REVIEW AND PROCEDURE CHECKLIST SUBDIVISION PLAT CHECKLIST STORM WATER CONTROL STRUCTURE OPERATION AND MAINTENANCE PLAN PRE-CONSTRUCTION MEETING AGENDA EROSION CONTROL FORMS AND CHECKLISTS EROSION CONTROL FINANCIAL RESPONSIBILITY FORM EROSION CONTROL PLAN CHECKLIST DRIVEWAY PERMIT CERTIFICA TION FORMS FORM 1-01 PRIMARY EROSION CONTROL INSPECTION FORM FORM 1-02 INTERMITTENT SUBDIVISION CONSTRUCTION FORM FORM 1·03 FINAL SUBDIVISION CONSTRUCTION FORM FORM 1-04 FINAL WATERSHED POND CONSTRUCTION FORM FORM 1-05 RE-INSPECll0N FORM FORM 1-06 FINAL EROSION CONTROL ACCEPTANCE FORM CONSTRUCTION CHECKLIST FINAL INSPECTION AND ACCEPTANCE OF SUBDIVISION CONSTRUCTION POST -CONSTRUCTION CHECKLIST W A TERST-lED POST -CONSTRUCTION CHECKLIST FOR RETENTION AND DETENTION PONDS AS-BUILT DRA WING CHECKLIST CONCRETE MONUMENT REPORT FORM PERMIT TO OPEN CUT UTILITY TRENCHES CITY MAINTAINED STREET RIGHT-OF·W A Y WARRANTY GUARANTEEING SUBDIVISION IMPROVEMENTS SUBDIVISION BOND ESTIMA 1'8 FORM 07-1 07-3 07-6 07-9 07-12 07-13 07-13 07-15 07-18 07-19 07-20 07-21 07-22 07·23 07-24 07-25 07-26 07-28 07-29 07-3 I 07-32 07-34 07-35 07.37 07-38 07-39 Table of Contents III e e e e e e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 08.00 DETAIL #'S DETAIL #'S DETAIL #'S DETAIL #'S DETAIL #'S DETAIL #'S 09.00 09.01 09.01.0] 09.01.02 09.01.03 09.01.04 09.01.05 09.01.06 09.01.07 09.01,08 09.01.09 09.01.10 09.01.11 09.01.12 09.01.]3 09.01.14 09.01.15 09.01.16 09.01.17 09.01.18 09.01.19 09.01.20 09.02 09.02.01 09.02.02 09.02.03 09.02.04 09.03 09.03.01 09.03.02 09.03.03 09.03.04 09.03.05 09.03.06 09.03.07 09.03.08 09.03.09 09.03.10 09.03.11 09.03.12 09.03.13 09.03.14 09.03.15 09.03.16 09.03.17 09.03.18 09.03.19 09.03.20 09.03,21 09.03.22 09.03.23 09.03.24 09.03.25 ROADW A Y ISTORM DRAINAGE DETAILS (A COMPLETE LISTING OF DETAILS CAN BE FOUND AT THE FRONT OF TI-IIS DIVISION) 02 03 04 05 06 07 STREETS EROSION AND SEDIMENTATION CONTROL STORM DRAINAGE DETENTION AND RETENTION FACILITIES LANDSCAPING MISCELLANEOUS WATER MAIN CONSTRUCTION DESIGN OF WATER MAINS FIRE FLOW AND RESIDUAL PRESSURE REQUIREMENTS HYDRAULIC DES]GN SERVICE LINES AND METERS MAINS LOCATION AND DEPTH PIPE MATERIALS AND THICKNESS DESIGN THRUST RESTRAINT VAL VING REQUIREMENTS FIRE HYDRANT SPACING PROVISIONS FOR TESTING AND DISINFECTION AIR RELEASE, AIR RELIEF AND VACUUM VALVES AND BLOWOFFS MINIMUM PIPE SIZE AND LIMITATIONS OF SMALL DIAMETER MAINS CONFLICTS WITH EXISTING AND PROPOSED UTILITIES BORES AND TUNNELS STREAM CROSSINGS DESIGN OF SOIL EROSION AND SEDIMENT CONTROL MEASURES ENGINEERING PLAN SUBMITTALS STANDARDS FOR CASING PIPE AND TUNNEL LINERS STANDARD SYMBOLS FOR SANITARY SEWER AND WATER PLANS DESIGN CHECK LIST WATER MAIN MATERIALS DESCRIPTION SHOP DRAWINGS AND SUBMITTALS MATERIAL SPECIFICA nONS SHOP DRAWINGS MATERIALS LIST CONSTRUCTION, INSTALLATION AND TESTING OF WATER MAINS HANDLING AND STORAGE OF MA TERlALS CONNECTION TO EXISTING MAIN EXISTING UTILITIES WATER LINE I SEWER LINE CLEARANCE EXCA V A TION WATER MAIN PIPE LAYING INSTALLATION AND ASSEMBLY INSTALLING VALVES, HYDRANTS, AND FITTINGS WATER MAIN TAPS 3/4 AND I" SERVICE CONNECTIONS 1-112 AND 2" SERVICE CONNECTIONS 3" AND LARGER SERVICE CONNECTIONS BACKFILL COMPACTION REQUIREMENTS REMOVAL AND RESTORATION OF PAVEMENT AND ROAD SURFACES CONCRETE CONSTRUCTION BORE WITH STEEL ENCASEMENT BLASTING HYDROSTATIC AND LEAKAGE TESTING DISINFECTION AND BACTERIOLOGICAL TESTING OF MAINS SEPARATION OF CONSTRUCTED MAINS fROM EXISTING MAINS REPAIRS RESTORATION WORK WITHIN NCDOT RIGHTS·OF WAY CITY OF MONROE JOB CLOSE·OUT 09-1 09·1 09-1 09-2 09-2 09-3 09-4 09-4 09·5 09-5 09-6 09·6 09-6 09-6 09·7 09-7 09-8 09·8 09·12 09-13 09-14 09-16 09-16 09-16 09-17 09-29 09-30 09·30 09-31 09·32 09-33 09-33 09-36 09-38 09-41 09-43 09-43 09-44 09-44 09-44 09-45 09-46 09-48 09-50 09-51 09-52 09-55 09·57 09-57 09-58 09-60 09-62 Table of Contents lV CITY OF MONROE 10.00 DETAIL #'S STANDARD SPECIFICATIONS AND DETAIL MANUAL WATER MAIN CONSTRUCTION DETAILS (A COMPLETE LISTING OF DETAILS CAN BE FOUND AT THE FRONT OF TI-IlS DIVISION) 10 WATER MAIN CONSTRUCTION 11.00 SANITARY SEWER MAIN CONSTRUCTION 11.01 11.01.01 11.01.02 11.01.03 11.01.04 11.01.05 11.01.06 ] 1.01.07 11.01.08 11.01.09 11.01.10 11.01.11 11.02 11.02.0 I 11.02.02 11.02.03 11.02.04 11.03 11.03.01 11.03.02 11.03.03 11.03.04 11.03.05 11.03.06 11.03.07 11.03.08 11.03.09 11.03.10 11.03.11 11.03.12 11.03.13 11.03.14 11.03.15 11.03.16 11.03.17 11.03.18 11.03.19 11.03.20 11.03-21 11.03.22 11.03.23 12.00 DETAIL #'S DESIGN OF SEWER MAINS HYDRAULIC DESIGN GENERAL SEPARATION DISTANCES REQUIRED PROTECTION OF POTABLE WATER SUPPLIES PIPE MATERIAL SELECTION MANHOLE SELECTION MANHOLE SPACING SAN IT AR Y SEWER LATERALS PROVISIONS FOR TESTING ENGINEERING PLAN SUBMITTAL REQUIREMENTS STANDARD SYMBOLS FOR SANITARY SEWER AND WAfER PLANS DESIGN CHECK LIST SANITARY SEWER MAIN MATERIALS DESCRIPTION SHOP DRA WINGS AND SUBMITTALS MATERIAL SPECIFICATIONS SHOP DRAWINGS MATERIALS LIST CONSTRUCTION, INSTALLATION AND TESTING OF SEWER MAINS HANDLING AND STORAGE OF MATERIALS CONNECTION TO EXISTING SEWERS EXISTING UTILITIES SEWER LINE I WATER LINE CLEARANCE CLEARING EXCA V A TION PIPE LAYING LATERAL INST ALLA TION BACKFILL COMPACTION REQUIREMENTS MANHOLE CONSTRUCTION REMOVAL AND RESTORATION OF PAVEMENT AND ROAD SURFACES CONCRETE CONSTRUCTION DRY BORE WITH STEEL ENCASEMENT GUARANTEED CASING INSTALLATION TUNNELING OPERATIONS USING STRUCTURAL STEEL LINER PLATES BLASTING PHYSICAL INSPECTION AND TESTING REPAIRS AND MODIFICATIONS ABANDONMENT RESTORA TION WORK WITHIN NCDOT RIGHTS-OF WAY CITY OF MONROE .lOB CLOSE OUT 11·1 11-] 11-3 11·4 11-4 11-5 11·6 11-7 11-7 11·7 11- ,11 11-12 11-14 11-14 11-14 11-15 11-27 11-28 11-28 11·29 11-31 11-32 11-32 11-33 11·37 11·39 11-41 11-42 11-43 11-46 11-47 11-49 II-50 II-51 II-54 11-55 11-57 II-58 II-59 11-62 11-63 SANITARY SEWER MAIN CONSTRUCTION DETAILS (A COMPLETE LISTING OF DETAILS CAN BE FOUND AT THE FRONT OF TI-US DIVISION) 12 SANITARY SEWER MAIN CONSTRUCTION v Table of Contents e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL APPENDlX A e Al A2 A3 A4 AS A6 A7 A8 A9 e e e e TIME OF CONCENTRATION DETERMINATION OF "C" VALUE RAINF ALL INTENSITY FLOW WITHIN A SYSTEM CULVERT DESIGN - INLET CONTROL CUL VERT DESIGN - OUTLET CONTROL RATIONAL METHOD PIPE DESIGN FOR INLET CONTROL FORM SAMPLE CALCULATION FOR DETERMINING REQUIRED PIPE SIZE RATIONAL METHOD PIPE DESIGN FOR INLET CONTROL FOR SAMPLE CALCULATION VI Table of Contents e e DIVISION 01.00 e GENERAL e . e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 01.00 GENERAL 01.01 DEFINITIONS 1. ACCELERATED EROSION - Any increase over the rate of natural erOSIOn as a result ot land dIsturbing activity. 2. AGENT ~ An individual designated by the Developer as the primary source of contact between the Developer, the Contractor, and the City of Monroe. 3. ARCHITECT - An individual duly licensed in accordance with Chapter K3A ot the N.C. General Statutes. 4. AS-BUlL T DRAWING - A construction drawing completed by means of held survey that shows the location of existing or constructed items such as drainage structures, utilities, ponds, roadways, sidewalk, curb & gutter, etc. 5. BUlL T DRA.INAGE STRUCTURE - A drainage structure that IS constructed on-sIte by block, bnck, or concrete. 6. CITY ENGINEER - The Engineering Director of the City of Monroe, an engmeer, or other representative duly authorized by the Engineering Director. 7. CONTRACT - The agreement between the Contractor and the City of Monroe or the Contractor and a Developer. 8. CONTRACTOR - The corporation, partnership, individual or other legal entIty havmg a Contract with the City of Monroe or a Developer to perform the work. 9. DEVELOPER - The corporation, partnership, individual or other legal entIty proposmg to develop land in accordance with the Monroe City Code of Ordinances and applicable State and Federal laws governing their activity. 10. EASEMENT - A property right to use or control real property of another tor a speclhc purpose and use by the public, a corporation, or other entity. 11. ENGINEER - An individual duly licensed in accordance with Chapter ~~c ot the N.C. General Statutes. OI~l General Division 01 CITY OF MONROE 12. 13. STANDARD SPECIFICATIONS AND DETAIL MANUAL INSPECTOR - The City of Monroe Construction Inspector or other representative duly authorized by the Engineering Director. INVERT ~ The lowest point in the internal cross section of a pipe or other culvert. 14. PRE-CAST DRAINAGE STRUCTURE - A drainage structure that is constructed at another location and transported to the construction site. 15. PROFESSIONAL OF RECORD - An surveyor, Landscape Architect, or Engineer duly registered in accordance with Chapter 89C of the N.C. General Statutes and is responsible for preparing the design drawings approved by the City of Monroe 16. LAND SURVEYOR - An individual duly licensed in accordance with Chapter 89C of the N.C. General Statutes. 17. QUALITY ASSURANCE - The means of inspection by the City of Monroe or other governmental agency that verifies the tests and inspections of the quality control program established by the Developer and/or Contractor are in compliance with the approved construction drawings and requirements established by this manual. 18. QUALITY CONTROL PROGRAM - The Developer and/or Contractor program that details the methods and procedures that ensures the materials and completed construction being incorporated into a project conform to the approved plans and specifications and the City of Monroe Standard Specifications and Detail Manual. 19. RIGHT OF WAY - The land area dedicated for public use and reserved for vehicular access. 20. ROADWAY - The portion of a street reserved for vehicular travel. 21. SINGLE F AMIL Y - Includes any form of single, detached family housing development. All forms of single family attached structures are excluded from this definition and are considered to be multi family structures for the purposes of this manual. 22. SPECIFICA TIONS - The general term compnSll1g all the directions, provisions, and requirements contained or referred to in this book entitled "City of Monroe Standard Specifications and Detail Manual" and in any subsequent revisions or additions to this book. 23. STORM DRAIN - Conduit and appurtenances intended for the conveyance of storm water runoff. 01-2 General Division 01 e e e e e e e e e e CITY OF MONROE 23. STANDARD SPECIFICATIONS AND DETAIL MANUAL STREET - A public right-of-way for vehicular travel which 1) has been constructed and then dedicated to and accepted by the City of Monroe or the North Carolina Department of Trmlsportation for public use, or 2) has been otherwise obtained by such agencies for such use, or 3) is proposed to be constructed and then dedicated to and accepted by such agencies as a public right-of-way for vehicular traffic for public use. Street classifications are defined in Standard 02.01.01. 24. SUBDIVIDER - A person who owns a property and divides that property 111to smaller properties in accordance with the Monroe City Code. 25. SUBDIVISION ADMINISTRATOR - The Planning Director of the City ot Monroe or hIS desIgnee who IS authorized to approve final plat recordation. 26. SUBGRADE - That portion of the roadbed prepared as a foundation for the pavement structure. 27. WORK - That which is proposed to be constructed or done under the Contract. 01.02 ABBREVIATIONS AASHTO A.D.A. ADT A.F.F. ANSI ASTM FFE ft. HDPE ID Lbs. American Association of State Highway and Transportation Officials Americans with Disabilities Act Average Daily Traffic Above Finished Floor American National Standards Institute American Society of Testing and Materials Finished Floor Elevation foot High Density Polyethylene Pipe Internal Diameter Pounds 01-3 General Division 01 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL MSL Mean Sea Level MUTCD Manual on Uniform Traffic Control Devices NCDENR North Carolina Department of Environment and Natural Resources NCDOT North Carolina Department of Transportation NCOSHA North Carolina Occupational Safety and Health Association (a Division ofN.C. Department of Labor) NCPE North Carolina Professional Engineer NCPLS North Carolina Professional Land Surveyor NCSCC North Carolina Sedimentation Control Commission. N.E.C. National Electric Code NRCS Natural Resources Conservation Service OD Outside Diameter OSHA Occupational Safety and Health Association P. C. Point of Curvature PE Professional Engineer PLS Professional Land Surveyor pSi pounds per square inch P .T. Point of Tangency PVC Polyvinyl Chloride P .V. C. Point of Curvature on Vertical Curve P .V. 1'. Point of Tangency on Vertical Curve Qmax Maximum Discharge Qmin Minimum Discharge 01-4 General Division 01 e e e e e e e e e e CITY OF MONROE RCP SCS sec. s. f. Sq. Yds. STANDARD SPECIFICATIONS AND DETAIL MANUAL Reinforced Concrete Pipe Soil Conservation Service Second Square Feet Square Yards 01.03 APPLICABLE SECTIONS, DIVISIONS, AND STANDARDS OF THIS MANUAL 1. The following divisions and/or standards shall apply to ALL development including but not limited to residential, non-residential, commercial, and industrial single project development, and residential, non-residentail, commercial, and industrial subdivision development: A. B. C. D. E. 01.01 01.02 01.03 01.04 01.05.01 01.06 02.01.04 02.01.05 02.02.05 Division 03 Division 04 07.01 07.06.01 07.06.02 07.07 07.15 Definitions Abbreviations Applicable Sections of This Manual General Notes Developer and Contractor Requirements Safety NCDOT Driveway Permit and Encroachment City of Monroe Driveway Permit and Other Driveway Information Off-Street Parking Erosion and Sedimentation Control Storm Drainage Collection Facilities Permit Information Erosion Control Financial Responsibility Form Erosion Control Plan Checklist Driveway Permit Permit to Open Cut Utility Trenches City Maintained Street Right of Way 01-5 General Division 01 CITY OF MONROE 2. STANDARD SPECIFICATIONS AND DETAIL MANUAL The following divisions and/or standards shall apply to residential, commercial, and industrial subdivision development: A. 01.05.02 01.07 01.08 01.09 01.10 01.11 B. 02.01.01 02.01.02 02.01.03 02.02.01 02.02.02 02.02.03 02.02.04 02.02.07 02.02.08 02.02.09 02.02.10 02.03 Subdivision Development Roadway and Stonn Drainage Construction Plan Requirements Inspections Warranty As-Built Drawings Concrete Monuments Street Classifications Street Names Traffic Studies Design Criteria Superelevation Storm Drainage Subdivision Entrance Signs, Markers, and Landscaped Areas Street Name Identification Signs Construction Plans Requirements for Street Improvements Exemption for Required Street Improvements Construction C. Division 06 Landscaping D. 07.02 07.03 07.05 07.08 07.09 07.10 07.11 07.13 07.14 Planning Procedure Checklist S ubdi vision Plat' Checklist Pre-Construction Meeting Agenda Certification Forms Certification Form 1-01 Certification Fonn 1-02 Certification Form 1-03 Certification Form 1-05 Certification Form 1-06 Construction Checklist Final Inspection and Acceptance Post-Construction Checklist As-Built Drawing Checklist Concrete Monument Report F0TI11 01-6 General Division 01 e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 3. The following divisions and/or standards shall apply to single lot non~ single family residential, commercial and industrial development: e A. 01.10 B. 02.01.05 02.02.06 C. Division 05 e D. 07.04 07.08 07.12 07.13 e As-Built Drawings City of Monroe Driveway Permit Non-Single Family Single Lot Development Requirements Retention and Detention Facilities Stormwater Control Structure Operation and Maintenance Plan Certification Forms Certification Form 1 ~O I Certification Form 1~04 Certification Form I~Os Certification Form 1-06 Commercial Site Post-Construction Checklist for Retention and Detention Ponds As~Built Drawing Checklist 01.04 GENERAL DEVELOPMENT NOTES 1. A designer of the types of development described within this document must be a Professional Engineer, a Professional Land Surveyor, or a Professional Landscape Architect and may only perform design work to the extent the North Carolina General Statutes allows for each respective profession. e Each designer should be aware that site specific conditions, City of Monroe Ordinances, and state and federal laws may necessitate additional information, analysis, or other obligations beyond the minimum requirements found within this document. 2. 3. The City of Monroe is not responsible for the accuracy or adequacy of a design, dimensions and elevations on reviewed construction plans. Approval of a development plan by the City of Monroe does not relieve the Developer, his Agent, Engineer, or Contractor of their responsibility to ensure proper design and construction of the planned development, nor does it impose responsibility on the City of Monroe for the design and construction methods of the development. 4. e 01-7 General Division 01 CITY OF MONROE 01.05 01.05.01 01.05.02 STANDARD SPECIFICATIONS AND DETAIL MANUAL 5. For subdivision development, the City of Monroe shall not be liable for the maintenance of proposed streets until acceptance of the right-of-ways. Until acceptance, the right-of-ways shall remain private in perpetuity. 6. Any construction design change following plan approvals shall be issued through the Professional of Record. DEVELOPER AND CONTRACTOR REQUIREMENTS ALL DEVELOPMENT 1. All civil construction plans and designs shall be prepared and properly certified by a professional registered in the State of North Carolina, as defined in Standard 01.04, Note 1. 2. The Developer is required to designate a single party who will serve as his agent and be responsible for all Contractor operations and all communications with the City of Monroe. 3. Except where otherwise noted or defined, plan scales shall be, 1" =10", 1"=20', 1"=30', 1"=40', 1'=50', 1"=60', or 1"=100'. Variations other then those listed must to be pre-approved by the Engineering Director. 4. Plan sheets shall be limited to 24"x 36". SUBDIVISION DEVELOPMENT 1. All street and utility construction work must be performed by contractors who are properly licensed in accordance with Chapter 87, General Statutes of North Carolina or by City of Monroe forces when approved by City Council and/or the City Manager. 2. The Developer's Engineer or Surveyor is required to provide the City of Monroe a digital copy of the plans for the proposed subdivision upon final construction plan approval. All control points shall be tied to the U.S. State Plane coordinates in accordance with Chapter 89C of the General Statutes. 3. At no expense to the City of Monroe, a professional, as defined in Standard 01.04, Note 1, registered in the State of North Carolina shall be employed by the Developer to inspect the installation of water, sewer, drainage, streets, erosion control measures, and best management practices. Inspections shall be of the amount and degree required for the Developer and his Engineer to complete project certification to the City of Monroe and state agencies. 01-8 General Division 01 e e e e e CITY OF MONROE . 4. STANDARD SPECIFICATIONS AND DETAIL MANUAL The Planning Procedure Checklist contained herein shall be used as a guide for informational purposes only and is used by the Planning Department for the plan approval process. All items must be marked on the checklist as being properly addressed by the Engineer/Surveyor prior to review by the City. 5. The Developer, his Agent, and his Contractor are required to utilize the Construction Checklist, the Post-Construction Checklist and the subsequent Certification Forms contained herein. All items must be properly completed prior to scheduling a final walk-through. e 6. The Developer, .his Agent, and his Contractor are required to contact the City of Monroe Energy Services Department and the telephone and cable utilities prior to curb placement for conduit locations under the roadway. 7. Prior to the start of any construction activity, all approvals and permits for the development (water, sewer, roadway, driveway permits, etc.) must be obtained by the Developer. e 8. A Pre-Construction Conference will be held prior to the start of any construction activity. Refer to standard 07.05 for the Pre-Construction Agenda. The Developer is responsible for contacting the City of Monroe Engineering Department to arrange the meeting once he has obtained all approvals and is ready to begin construction. 9. The City of Monroe will schedule the meeting and contact staff for each of the following areas: · · · · e · · · · . City of Monroe Engineering Department; City of Monroe Plmming and Development Department; City of Monroe Water Resources Department; City of Monroe Energy Services Department; NCDOT (if connecting to NCDOT maintained roadway); Telephone Utility; Cable Television Utility; Developer. The Developer shall be responsible for contacting his Agent, Engineer, Builder, and Contractor and having representatives present at the Pre- Construction Conference. 01-9 General Division 01 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 01.06 SAFETY 01.06.01 OSHA STANDARDS 1. All contractors and their employees must comply with all federal and North Carolina OSHA standards. 2. If a violation of any federal or North Carolina OSHA standard is observed and not corrected, the appropriate agency shall be contacted immediately for enforcement. 01.06.02 HEAL TH AND SAFETY HAZARDS 1 . The operations of all contractors performing work shall not expose their employees or City of Monroe workers to occupational safety and health hazards. 2. This shall include but not be limited to the following exposures: Task Appropriate Standard Use of Explosives Setting up Work Zones on roadways Explosives and Blasting Agents Scaffolding Fall Protection Excavations Ladders Electrical HazCom National Fire Protection Agency Uniform Traffic Control (MUTCD) OSHA 1910.109 Setup & use of scaffolding Setup & use of fall protection Trenching & excavation Setup & use of ladders Electrical design & protection Hazardous chemicals brought on site Storage of flammables & combustibles OSHA 1926.0451 OSHA 1926.0501 OSHA 1926.0651 OSHA 1926.1053 OSHA 1926.0404 OSHA 1926.0059 30, 58 & 395 3. Contractors that anticipate the use or storage of any hazardous materials at the project are required to notify the Fire Department of the City of Monroe prior to anyon-site use or storage. 01.07 ROADWAY AND STORM DRAINAGE CONSTRUCTION PLAN REQUIREMENTS THIS STANDARD SHALL BE SUPPLEMENTAL TO DIVISIONS 02.00 STREETS AND 04.00 STORM DRAINAGE COLLECTION FACILITIES. 1. Each set of plans shall have the seal, signature, and date of the professional, as defined in Standard 01.04, Note 1, registered in the State of North Carolina, under whose supervision the plans were prepared. 01-10 General Division 01 e e e e e CITY OF MONROE 2. e 3. 4. 5. e e e . STANDARD SPECIFICATIONS AND DETAIL MANUAL Show a north arrow Show a vicinity map Plan sheets shall be 24" x 36" Each page shall have consecutive sheet numbers, beginning with cover sheet. 6. Show all benchmarks and their assumed elevations. 7. Show locations of proposed concrete monuments. 8. Show adjacent properties with nalne, deed book reference, and tax map parcel number, property boundary, iron pins, right-of-way lines, and easements. Right-of-way lines shall be dimensioned and distinguishable. Easement areas shall be clearly labeled with type and dimension. 9. The minimum scale shall be I" = 50' for roadway plans. The minimum scale shall be 1" = 1 00' for preliminary plats. 10. Show a title block on every sheet of the plan set that includes Developer's and his Engineer's name, address, and telephone number, name of the development, original date of the plans, scale indication, sheet number, and revision columns. 11 . Show existing and proposed paved areas, buildings, structures, and utilities. 12. Show all proposed and existing roadways including, but not limited to pavement, curbing, sidewalk, ramps, storm drainage, and erosion control measures. 13. Show all proposed and existing utilities including, but not limited to water lines, valves, hydrants, sanitary sewer lines, manholes, gas lines, valves, telephone, cable television, and electric lines, and poles. 14. Show stationing on each proposed roadway. Stationing shall be based on the centerline of roadways and shall be labeled from the intersection of centerlines of intersecting roadways to the roadway ending intersection, the center of a cul-de-sac, or the end of the roadway. 15. Show stationing for each drainage way. Stationing shall be based on the flow line of the drainage way. 01-11 General Division 01 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 16. Show station and critical elevation (channel flow line, invert in and out of pipe and/or rim elevation) of all utility or storm drainage appurtenances, existing and proposed. 17. Show sheet flow direction at intersections. 18. Show match lines with cOlmecting sheet numbers. 19. Show existing and proposed contours (4' max). 20. Cite all applicable details proposed for use during construction of the project. 21. The plans shall include adequate details of special structures not covered by the City of Monroe Standard Specifications and Detail Manual, latest edition, or the North Carolina Department of Transportation Roadway Standard Drawings, latest edition. 22. Show proposed sight triangles including 10' X 70' and 35' X 35' at main entrances and a 35' X 35' sight triangle for all interior streets per detail 02.01.10. 23. Dimension the radius of each curve in the roadway and intersection radii. . 24. All profiles shall include, but not be limited to the original ground (dashed), design grade (bold and continuous), proposed pipes (bold and continuous), proposed structures (bold and continuous), distance, slope (percentage), and type and size of pipe (if required) between grade breaks and structures, critical elevation (flow line, invert of pipe, rim elevation, etc.) labels, grid (light, continuous), grid elevation labels, grid station labels, and other existing and proposed structures and appropriate labels. 25. The Developer must obtain the written permission of the adjacent property owner(s) for any off-site grading or construction prior to construction drawing approval. 26. The following are required notes that shall appear on every plan submitted to the City of Monroe prior to approval. A. The City of Monroe plan review is only for general conformance with the City of Monroe design criteria and the City Code of Ordinances. The City of Monroe is not responsible for the accuracy and adequacy of the design, dimensions, and elevations, which shall be confirmed and correlated at the job site. The City of Monroe, through the approval of this document assumes no responsibility for the completeness and/or accuracy of this document. 01-12 General Division 0 I e e e e e e . e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL B. All roadway and stonn drainage construction shall be by the City of Monroe Standard Specifications and Detail Manual, latest edition. Where a construction item is not covered by this manual, the North Carolina Department of Transportation Roadway Standard Drawings, latest edition, shall apply. C. All water distribution construction shall be in accordance with the City of Monroe Standard Specifications and Detail Manual. D. All sanitary sewer construction shall be in accordance with the City of Monroe Standard Specifications and Detail Manual. E. All materials and workmanship shall be subj ect to inspection by the City of Monroe. The City of Monroe reserves the right to accept or reject any materials and workmanship that does not confonn to the City of Monroe Standard Specifications and Detail Manual, latest edition, and the North Carolina Department of Transportation Standard Specitìcations for Roads and Structures, latest edition. F. Location and elevations of existing utilities shall be verified by the Contractor prior to actual construction. G. The Contractor shall call North Carolina One Call at 1-800-632- 4949 at least 48 hours prior to any digging. The Contractor shall also be responsible for contacting Union County Public Works and Union Power Cooperative. H. The Contractor shall have one set of signed and sealed plans, reviewed by the City of Monroe, one copy of City of Monroe Standard Specifications and Detail Manual, latest edition, one copy of the North Carolina Department of Transpo'rtation Standard Specifications for Roads and Structures, latest edition, and a copy of any pennits, encroachments or easement agreements on the site at all times. 1. The Developer's Engineer is responsible for accurately showing existing conditions, both on-site, and off-site, on the construction plans. Any modifications required due to conflicts, omissions, or changed conditions either on-site or off-site that arise in the fìeld will be entirely the Developer's responsibility to resolve. The cost to rectify any adverse situation to meet the City of Monroe Standard Specifications and Detail Manual and City of Monroe Ordinances shall be borne solely by the Developer, the Engineer, or Contractor as legally required. 01-13 General Division 01 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 1. The Developer and his Contractor will be required to provide positive drainage and fall along all ditches. K. The Developer and his Contractor shall ensure all ditches are stabilized prior to final acceptance of the development by the City of Monroe. 01.08 INSPECTIONS 1. The Engineering Department shall designate a construction inspector for each subdivision. 2. The construction inspector does not have the authority to approve revisions or waive requirements identified by the approved plans or City of Monroe Standard Specifications and Detail Manual. 3. The Developer and his Contractor shall make all aspects of the development construction readily available to the construction inspector. The City of Monroe will not accept any subdivision that has not met these requirements. 4. The Engineering Department and the City's construction inspector shall be responsible for Quality Assurance inspection only. The Developer, his Engineer, and the Contractor are responsible for performing all Quality Control inspection associated with the proposed development. 7. Revisions to the approved drawings due to field conditions are to be initiated by the Developer and his Contractor through the Professional of Record and will require approval from the Engineering Department. The Construction Inspector does not have the authority to approve revisions or waive requirements identified by the approved plans or the City of Monroe Standard Specifications and Detail Manual. 8. Quality Assurance and Quality Control testing shall be required for all system improvements - water, sanitary sewer, st0011 drainage and streets to ensure proper materials and workmanship. The Developer shall be responsible for retaining a qualified geoteclmical firm for the purpose of performing the required testing. Cost Participation e e e e Costs for the performance of the required tests by the independent testing firm shall be paid by the Developer. The City of Monroe . shall incur no costs for tests including additional testing required . by the Construction Inspector to ensure the quality of questionable work or materials. 01-14 General Division 01 e e e e e CITY OF MONROE STANDARD SPECIFICA nONS AND DETAIL MANUAL The cost of re-testing or work necessary to bring deficient areas into compliance shall be performed at no cost to the City of Monroe. The Engineering Department will be copied on all test results. Testing Requirements Testing of material and workmanship incorporated into the job shall be performed by an independent testing firm approved by the City of Monroe Engineering Department. Testing shall be of the type and frequency required to ensure that the materials and workmanship meet the requirements of the City of Monroe. All test results must be certified by an engineer registered in the State of North Carolina. The testing agency shall submit one copy of the report directly to the City of Monroe Engineering Department. Tests shall be performed in accordance with ASTM Standards and be appropriate to the material type. Minimum testing and density shall be required as follows: UTILITY TRENCHES - WATER, SEWER, STORM, ETC. Material shall be deposited and spread in uniform layers not to exceed 8 inches in depth. Density tests shall be taken after the second foot and then every third foot thereafter with the final test at subgrade. Within the roadway, existing or proposed, density tests shall be taken at intervals of 200 feet and at all intersection crossmgs. Within the right of way, outside of the roadway, density tests shall be taken at intervals of 500 feet and at all intersection crossings. Within open areas outside the street right of way, density tests shall be taken at intervals of 1000 feet. In case of failing test, the Engineering Director has authority to require re-testing at 500 feet intervals within the failed area. 01-15 General Division 01 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL Utility trenches within the roadway, existing or proposed, shall be compacted from the bottom of the utility trench to e within 12 inches of sub grade to a density equal to at least 95% of Standard Proctor maximum dry density. All material within 12 inches of sub grade shall be compacted to a density equal to at least 100% of Standard Proctor maximum dry density. Utility trenches outside the roadway and within open areas outside the street right of way shall be compacted to a density equal to at least 95% of Standard Proctor maximum dry density. e ROADWAYS Material placed for roadway embankments shall be placed in uniform layers not to exceed 10 inches in depth. Density tests shall be taken after the second layer and then every third layer thereafter with the final test at subgrade. Linear frequency of density test shall be at random but no less than 300 feet apart. In all cases, vertical curves requiring embankment shall be tested. e Roadway embankment material shall be compacted to a density equal to at least 95% of Standard Proctor maximum dry density. All material to a depth of 12 inches below the finished surface of sub grade shall be compacted to a density equal to at least 100% of Standard Proctor maximum dry density. Density tests for stone base shall be at random but no less than 300 feet apart. e Each layer of stone base shall be compacted to a density equal to at least 100% of Standard Proctor maximum dry density. 01.09 WARRANTY 1. Prior to the approval of the final plat or acceptance by the City of Monroe of any improvements in any subdivision, the subdivider shall furnish to the City of Monroe a written warranty against defects which shall guarantee the material and workmanship for a period of not less than 12 months from the date of such acceptance. See Standard 02.03.06 for Roadway Construction Tolerances within the warranty period. e 01-16 General Division 01 e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 2. Upon successful perfonnance of the improvements, as determined by the Subdivision Administrator, for the 12-month period, the warranty shall expire. Upon the failure of an improvement to perform within the generally accepted standards for the type improvement as determined by the Subdivision Administrator, the subdivider shall be notifìed and given a reasonable period of time to correct the defects. Should the subdivider fail to act, fail to act in a timely manner, or otherwise fail to correct the defect(s), the Subdivision Administrator shall find the subdivider in default and shall institute appropriate action to obtain compliance. Until successful performance is obtained as determined by the Subdivision Administrator, the warranty shall not expire. 01.10 AS-BUlL T DRAWING REQUIREMENTS 1. The Developer is required to submit a certifìed as-built set of construction drawings, signed and sealed by NCPE and/or NCPLS, following construction in accordance with the As-Built Drawing Checklist in Standard 07.13. 2. The Developer must submit as-builts prior to acceptance of the improvements for maintenance by the City of Monroe. 3. The As-Built Drawing Checklist in Standard 07.13 must be attached to each set of as-built drawings submitted for approval. 4. Each blank must be initialed by the applicant as being included on the as- built drawings or marked "N/ A" if not applicable to the project. 5. The Developer is required to submit plan sheets, 24" X 36" mylar or vellum, and a digital copy in a software version format readable by current technology the City of Monroe is utilizing. Please contact the Engineering Department for information on the current operated technology. 6. All applicable information listed on the As-Built Drawing Checklist in Standard 07.13 must be included on all as-built drawings. 01.11 CONCRETE MONUMENTS 1. Concrete monuments shall be placed in residential, commercial, and industrial subdivisions in accordance with Detail 08.01.01. 2. Two concrete monuments shall be required for every subdivision constructed within the City limits of Monroe. An additional concrete monument shall be required for every 100 lots within the subdivision (i.e. a subdivision with 89 lots shall require two concrete monument and a subdivision with 214 lots shall require four concrete monuments). 01-17 General Division 01 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 3. No concrete monument shall be placed within 500 feet of another concrete monument except in unusual circumstances as approved by the Engineering Director. 4. Concrete monuments shall be placed by Professional Land Surveyors registered in the state of North Carolina. 5. Concrete monuments shall be placed within the right-of-way. 6. Refer to Standard 07.14 for City of Monroe Concrete Monument Report Form. 01-18 General Division 01 e e e e e e e DIVISION 02.00 e STREETS . e e e THIS PAGE IS INTENTIONALLY LEFT BLANK e e e e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 02.01 02.01.01 02.00 STREETS GENERAL STREET CLASSIFICATIONS 1. ARTERIAL STREET - A federal and/or state highway designed primarily for the movement of large volumes of vehicular traffic from one area to another; a thoroughfare. 2. COLLECTOR STREET - A public way designed primarily to connect residential streets with arterial streets and/or to provide direct connection between two or more arterial streets and which may be designed to carry significant volumes of vehicular traffic having neither origin nor destination on the street. 3. MINOR STREET - A public way used primarily for providing direct access to abutting properties. MINOR STREETS are further classified as: A. Residential - those streets whose primary function is to provide direct access to residential property. B. Commercial-Industrial - those streets whose primary function is to provide direct access to commercial-industrial property. C. Cul-de-Sac - a short minor street having one end open to traffic and the other end permanently terminated with a vehicular tumaround. The maximum length of a cul-de-sac is 1200 feet. 4. STREET, HALF - A proposed vehicular travel way intended to be developed by constructing one-half of a required multi-Imle width with the remainder to be provided at some future date.. 5. STREET, PRIVATE - A vehicular travel way not dedicated as a public street. 6. The final determination of the classification of streets in a proposed subdivision shall be made by the Planning Board. Streets shall be planned, designed and dedicated as public streets. 02-1 Streets Division 02 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 02.01.02 02.01.03 02.01.04 STREET NAMES 1. Proposed streets, which are obviously in alignment with others already existing or proposed and named shall bear the names of the existing or proposed ones. 2. In no case shall the names of proposed streets duplicate or be phonetically similar to other existing street names in the jurisdiction irrespective of the addition of a prefix, suffix or word such as street, avenue, place, drive or court. 3. The Union County Communications Department shall approve all street names. Contact the City of Monroe Engineering Department to initiate requests. TRAFFIC STUDIES 1. Traffic Studies may be required when deemed necessary by the Engineering Director to determine the impact of proposed development on existing and proposed roadways. 2. Traffic Studies will be conducted by a Traffic Engineer who is a registered Professional Engineer in the State of North Carolina. "" .). Studies include but are not limited to analysis of traffic generated by a proposed project in conjunction with existing land uses and conditions. Daily and peak hour impacts attributed to the project's trip generation shall be estimated and assessed, as well as cumulative impacts associated with other approved or anticipated growth. Parking and on-site access! circulation adequacies are also evaluated. Mitigation measures are recommended to minimize a project's potential impacts on the surrounding street system. NCDOT DRlVEW A Y PERMIT AND ENCROACHMENT REQUIREMENTS 1. Where proposed streets COlmect with a roadway maintained by the NCDOT, the Developer shall be required to obtain a Driveway Permit from the NCDOT. 2. The Developer shall obtain an approved Encroachment Agreement prior to beginning work within an NCDOT right-of-way for all utility, sidewalk, and storm drainage improvements. 3. For residential, commercial, and industrial developments, which connect to State-maintained roadways, five copies of the site plan and a completed NCDOT Driveway Application (one original and four copies) shall be submitted to the City of Monroe Engineering Department. Once the application is approved by the City of Monroe it will be forwarded to NCDOT for final approval. 02-2 Streets Division 02 e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL e 02.01.05 2. e 3. 4. e 02.02 02.02.01 4. See Standard 07.01 PERMITS for further information. ~ '" " CITY OF MONROE DRIVEWAY PERMIT AND OTHER . DRIVEWAY, ." '" ' INFORMATION 1. For residential, commercial, and industrial developments requiring access from an existing roadway, a completed Driveway Permit (found in Standard 07.07) and two copies of the site plan must be submitted to the City of Monroe Engineering Department. Driveway placement shall be in accordance with NCDOT standards or as otherwise defined by this manual. Refer to details 02.04.01 - 02.04.04 for driveway placement information. When the use of a property is changed or altered, a new City of Monroe Driveway Permit must be obtained prior to the change. 5. Failure to secure a driveway pennit prior to construction or change in the use of the property may result in the removal by the City of the driveway(s) or entrance(s) at the expense of the Building ContractorlProperty Owner. 6. Refer to Standard 07.07 for City of Monroe Driveway Pennit form. DESIGN GENERAL ROADWAY DESIGN CRITERIA 1. Pavement widths shall be in accordance with Details 02.01.01-02.01.07. 2. Pavement cross-sections shall be in accordance with Details 02.01.01- 02.01.07 e 3. 4. e'~~n... ~.\o 5. LA V) ~ 'Dtv e..l Ðy.7h'\.tv) r ~ 'C W\ ~,-t\-c.. e. 1>';))-~\ In lieu of utilizing the City of Monroe standard cross-section for residential streets, and as approved by the Engineering Director, the Developer may hire a Geoteclmical Engineering Fim1 to perform a CBR test to determine the required cross-section. However, the minimum pavement cross-section shall be 1.5" of Bituminous Concrete Surface Course and either 4" Bituminous Concrete Base Course or 8" of compacted Aggregate Base Course. Curb and gutter shall be constructed in accordance with Details 02.02.01 ~ 02.02.07 except as provided in Standard 02.02.09. Sidewalk shal e d or more lots or lth throug 111 a 1ce with Detail 02.03.01. o a streets serving eleven within major subdivisions and 02-3 Streets Division 02 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL "1 teF"E'Y\f' ~ ~ 6. In~ 'vision adjoins a L '" '" J ]) ~ 01.( 1.0 ~ yo... e" ì- of a street, the subdivider s t ~¿idewalk along the adjoining Co Y'1 I"Y' .~< c r.~ \ ~I frontage of s e lD such a way that añYì~~is1iQ.~¿idewalk pattern ... . extended. . _______ - 7. Concrete for sidewalk shall have a mlDImum compreSSIve strength of 3,600 psi. 8. Planting strips shall be in accordance with Details 02.01.01-02.01.07. 9. Utility separations shall be in accordance with Details 02.01.01-02.01.07. 10. The maximum grade of a new roadway shall be 8%. e 11. The minimum grade of a new roadway shall be 1.0% except as allowed at intersections or approved by the Engineering Director. 12. The design speed of new minor streets and roadways shall be 35 MPH. 13. The design speed of new collector and arterial streets and roadways shall be a minimum of 45 MPH or as directed by the Engineering Director. 14. The minimum centerline curve radius shall be 150 feet. 15. Superelevation of curves shall be in accordance with Standard 02.02.02. e 16. The minimum tangent between reverse curves shall be 100 feet. 17. The maximum cut/fill slope shall be 2:1. A 3:1 cut/fill slope IS recommended for ease of future maintenance. 18. The minimum sight distance on vertical curves shall be 200 feet. 19. All proposed streets shall intersect with existing roadways at an angle of 90°. Intersections may be allowed to have a minimum angle of 750 for low volume, extreme conditions subject to the approval of the Engineering Director. e 20. All proposed residential roadway intersections shall have a minimum edge of pavement radius of 30 feet and a minimum right-of-way radius of 20 feet. 21. All proposed commercial roadway intersections shall ·have a mIl1lmUm edge of pavement radius of 45 feet (50 feet recommended) and a minimum right-of-way radius of 30 feet. e ., l' , i' ;¡. \ 02-4 . S tre~ts Division 02 CITY OF MONROE 22. e 23. 24. STANDARD SPECIFICATIONS AND DETAIL MANUAL Sight triangles shall be in accordance with Detail 02.01.10. Designs such as a "bubble type" configuration along a through road to allow more lots will not be allowed. Any intersection that shall not have a catch basin constructed at the radii of intersections shall maintain a minimum curb return grade of 1.0%. 25. The Developer shall utilize the pavement design cross-sections per Details 02.01.01-02.01.06 unless an alternate design is submitted that is sealed by a Professional Engineer and is accepted by the Engineering Director. e 26. Street pavement sections and right-of way-widths are to be uniform along the roadway length except when necessary to accommodate turn lanes and islands at entrances. Pavement widths and right of way widths on a cul-de- sac street shall not transition to a lesser typical section as lots decrease in number. 27. The location and design of streets shall be in conformance with the adopted Thoroughfare Plan. Where conditions warrant, right-of-way width and pavement width in excess of the minimum street standards may be required. e 28. The Developer may be required to dedicate additional rights-of-way, widen existing roadways, or perform other improvements to existing public streets upon which the property fronts or which provides access to new subdivisions. 29. . Street access to adjacent properties may be required. In such situations the subdivider shall build and dedicate the streets to the boundary of their property in accordance with Detail 02.01.11 30. e Clll-de-sacs shall not be used to avoid connection with an existing street, to avoid the extension of a thoroughfare or collector street, or to avoid connection to adjoining property. 31 . Permanent dead-end streets should not exceed 1200 feet in length unless recommended by the Engineering Department and approved by the Planning Board. All cul-de-sacs or dead-end streets shall be provided with a turnaround meeting City standards. e 02-5 Streets Division 02 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 02.02.02 02.02.03 02.02.04 32. Where a tract of land to be subdivided adjoins a thoroughfare, the subdivider may be required to provide a marginal access street parallel to the thoroughfare or provide for through lots on a local street for the lots to be developed adjacent to the thoroughfare. Where through lots are established, such lots may be prevented from having direct access to the thoroughfare by driveways. SUPERELEV A TION THIS STANDARD SHALL ONLY APPLY TO COLLECTOR OR ARTERIAL STREETS DESIGNED TO MOVE LARGE VOLUMES OF TRAFFIC. 1. Design of superelevation shall be governed by the AASHTO Policy on Geometric Design of Highways and Streets, latest edition. 2. The minimum superelevation design rate can be calculated by the following: e = (V2115R) - f where: e = superelevation rate in ft/ft V = design speed in MP H R = radius of curve in ft f = side friction factor (see AASHTO Policy on Geometric Design of Highways and Streets, latest edition) STORM DRAINAGE 1. Storm drainage designs to be utilized within proposed roadways shall be. designed in accordance with Division 04.00 STORM DRAINAGE COLLECTION FACILITIES of this manual. SUBDIVISION ENTRANCE SIGNS, MARKERS, AND LANDSCAPED AREAS 1. The Planning Board and/or City Council may permit subdivision entrance markers and landscaped medians within the public rights-of-way on a case by case basis subject to the following conditions and any additional conditions the Board may tìnd to be appropriate in the individual circumstance: A. The City will not be responsible for maintenance. B. An entity responsible for maintenance shall be created. C. No such improvements shall interfere with sight distance or with normal maintenance requirements. 02-6 Streets Division 02 e e e e e e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 02.02.05 D. In the event of loss, damage, or lack of maintenance, the City of Monroe may remove all improvements and maintain the area in accordance with policy. E. The median or island and its associated travelway are designed to accommodate the anticipated traffic for the type street section in accordance with the standards of AASHTO. 2. For proposed streets that will connect to a NCDOT maintained roadway, and subdivisions outside the City limits but within the extraterritorial jurisdiction of Monroe, refer to the Division of Highways Board of Transportation Subdivision Roads Minimum Construction Standards. 3. All entrance signs or monuments shall comply with the sign regulations listed in the City of Monroe Zoning Ordinance and require the issuance of a sign permit prior to installation. 4. Any irrigated island within the roadway shall have sufficient sub-drains connected to the storm drainage system. OFF-STREET PARKING 1. Off-street parking areas shall be designed and constructed in accordance with all parking and driveway requirements listed in the City of Monroe Zoning Ordinance. 2. All parking facilities shall be designed and constructed with the proper number of accessibility spaces and van accessible spaces in accordance with the current North Carolina Building Code, Volume l-C - Accessibility Code, latest edition. 3. Driveway Permits are required for connection to City-maintained roadways and roadways maintained by the North Carolina Department of Transportation (NCDOT). For connection to City-maintained roadways two copies of the site plan shall be submitted to the City of Monroe Engineering Department with a City of Monroe Driveway Application. For connection to State-maintained roadways, five copies of the site plan shall be submitted (one original and four copies) and a completed NCDOT Driveway Application shall be submitted to the City of Monroe Engineering Department. Once the application is approved by the City of Monroe, it will be forwarded to NCDOT for final approval. 4. Parking Bays shall be designed in accordance with Table 02-01. 02-7 Streets Division 02 CITY OF MONROE STANDARD SPECIFICA nONS AND DETAIL MANUAL TABLE 02-01 MINIMUM DIMENSIONS FOR OFF-STREET PARKING A B C D E Fl F2 Center to Center Parking Parking Stall Stall to Aisle Curb Width of Two Row Direction Angle Width >I< Curb (ft.) Width (ft.) Length Bin with Access (Degrees) (ft.) (ft.) Road Between (ft.) Curb-to- Overlap Curb Curb-to- Curb One-Way 0 7.0 7.0 12.0 20.0 26.0 - 9.0 9.0 12.0 20.0 30.0 One-Way 45 7.0 19.1 12.0 9.9 50.2 45.2 9.0 20.5 12.0 12.7 53.0 46.6 One-Way 60 7.0 20.8 14.0 8.1 55.6 52.2 9.0 21.8 16.0 lOA 59.6 55.2 Two-Way 60 7.0 20.8 21.0 8.1 62.6 59.2 9.0 21.8 24.0 lOA 67.6 63.2 Two-Way 90 7.0 20.0 21.0 7.0 61.0 - 9.0 20.0 24.0 9.0 64.0 >I< 7 Feet == Compact Size Vehicles Only. See City of Monroe Zoning Ordinance for complete information. e e e :( F1 -..1 -ï I I AN Sl] I I E I I r~~' / (:' ¡~/.~ "', I 't D >V': ,/ ~ ~ e ~ /~/ //: : '-... 1 I F2 ....1 I( ...-1 I 1 02-8 Streets Division 02 e CITY OF MONROE 02.02.06 STANDARD SPECIFICATIONS AND DETAIL MANUAL NON-SINGLE FAMILY SINGLE LOT DEVELOPMENT REQUIREMENTS e e e e R. S. e T. U. V. Within non-single family lot developments, all private roads and ccess ways shall be designed and constructed to facilitate the afe and onvenient movement of motor vehicle and pedestrian traffi . Any non- si Ie family lot development shall provide sidewalk alo the property fron ge if the development is located along the followin major roads: A. SR 1349 ~ e';c......~.l ~ hOÞ.Vì.l. Ù-e" ~ ,"\ (? FI Q; \') t C tlfn 1V'\,"tt-c e ~ c:~ C(),,\h c:I ~·d/~C}l B. c. D. F. , /SR 1223 / NC 75, SR 2100 Dickerson Boule G. Franklin Street H. Goldmine Road SR 1162 I. Griffith Road 1. Hayne Street K. Lancaster L. M. N. US 601 O. Rocky River Road SR 1007 Roosevelt Boulevard US 74 Secrest A venue Secrest Short Cut Road SR 1501 Skyway Drive US 601, NC 200 Sunset Drive SR 2180, SR 2181 Sutherland Avenue W alkup Avenue 02-9 SR 1751 Streets Division 02 CITY OF MONROE 02.02.07 02.02.08 02.02.09 STANDARD SPECIFICATIONS AND DETAIL MANUAL STREET NAME IDENTIFICATION SIGNS 1. In subdivisions located outside the city limits, the subdivider shall install street name signs at appropriate locations in accordance with the standards and specifications of the county. Inside the city limits the city shall install standard street name signs at appropriate locations in accordance with the city's standards and specifications. The subdivider shall be responsible for the cost of such sign installation in accordance with the City of Monroe's cost schedule. CONSTRUCTION PLANS 1. For Construction Plan Requirements, refer to Standard 0 1.07 ROADWAY AND STORM DRAINAGE CONSTRUCTION PLAN REQUIREMENTS. REQUIREMENTS FOR STREET IMPROVEMENTS 1. 2. Except as provided in Standard 02.02.09, all proposed streets shall be graded to the full width of the right-of-way and the 10-foot utility easements and improved with a pavement width and standard curb and gutter section as required for the particular classification of street. All grading, pavement and curb and gutter shall be designed and installed in accordance with City standards and the approved construction plan. In addition, street paving and curb and gutter shall be installed in the following situations: A. Any existing street segment that has not been accepted for maintenance by either the City or the North Carolina Department of Transportation, and that is to serve as the required frontage for one or more lots created pursuant to the Subdivision Ordinance, shall be improved and dedicated to the public, as provided for above, in such a way that the street segment meets the standards of this manual for the particular classification of street, including right-of-way width. Such street segment shall be directly connected to the existing public street system by way of at least one public street accepted for maintenance by either the City of Monroe or the North Carolina Department of Transportation. No subdivision shall be permitted on any street that is an "island" not connected directly to the public street system. B. Subdivisions that adjoin existing streets maintained by either the City of Monroe or NCDOT shall dedicate additional street right- of-way necessary to meet the minimum width requirements for the type of classification of the adjoining street. When any part of the· subdivision is on both sides of an existing street, the entire minimum right-of-way shall be provided. 02-10 Streets DivIsion 02 e e e e e e e e e e CITY OF MONROE 02.02.10 02.03 02.03.01 02.03.02 STANDARD SPECIFICATIONS AND DETAIL MANUAL c. The Planning Board may require pavement and widening of pavement and widening and curb and gutter for turning lanes along any existing or proposed street that forms a significant entrance to a proposed subdivision where in the opinion of the Board such improvements are necessary in order to provide for safe vehicular movement into and out of the proposed subdivision. D. In cases where a street is stubbed into adjoining property for future extension and such street serves as the frontage for one or more lots which are not corner lots, the Planning Board may require the pavement of a temporary turn-around in a form similar to a cul-de- sac on such street where in their opinion such turn-around is necessary for the public convenience, safety and service. Temporary easements for such purposes may be required. EXEMPTIONS FOR REQUIRED STREET IMPROVEMENTS 1. Single family residential subdivisions with a minimum lot size of one acre where each lot has a minimum of 150 feet of public street frontage and the average street frontage per lot throughout the entire subdivision is at least 200 feet shall be exempt from the curb and gutter requirement of Standard 02.02.08. Such subdivisions shall provide a street graded to the full width of the right-of-way and the 1 a-foot utility easements with pavement and side ditch sections as specified in this manual for its classification. When calculating the minimum footage per lot and average frontage per subdivision, lots with full frontage on cul-de-sacs may be excluded. 2. In addition, for certain stub streets which have no frontage lots, improvements shall be required only as shown on Detail 02.01.11. All grading, pavement and curb and gutter or side ditch section shall be designed and installed in accordance with the City of Monroe standards and the approved construction plan. CONSTRUCTION STANDARD SPECIFICATIONS AND PLAN REQUIREMENTS 1. All construction shall be in accordance with the City of Monroe Standard Specifications and Detail Manual. Where a construction item may not be covered by this manual, the NCDOT Standard Specifications for Roads and Structures, latest edition, and the NCDOT Roadway Standard Drawings, latest edition, shall apply. INSPECTIONS BY DEVELOPER 1. The Developer, his Agent, Engineer, and Contractor shall be responsible for developing a "Quality Control Program" that will be reviewed at the preconstruction meeting. 02-11 Streets Division 02 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 02.03.03 02.03.04 02.03.05 2. All inspections and testing shall be in accordance with Standard 01.08 INSPECTIONS of this manual. INSPECTIONS BY CITY 1. The City shall designate a construction inspector for each subdivision. The inspector shall make daily visits to the job-site to observe the progression of the work and will advise the contractor of any defects that are identified during inspections. However, failure to identify any defects shall not relieve the Developer, his Agent, Engineer and Contractor of their responsibility to complete the work in accordance with the approved plans and specifications and the City of Monroe Standard Specifications and Detail Manual. 2. All inspections and testing shall be in accordance with Standard 01.08 of this manual. MA TERlALS 1. All materials used shall be in accordance with Division 10 of the N CDOT Standard Specifications for Roads and Structures, latest edition. CONSTRUCTION NOTES 1. All roadway construction methods shall be in accordance with the City of Monroe Standard Specifications and Detail Manual, and the NCDOT Standard Specifications for Roads and Structures, latest edition except where otherwise noted. 2. The Developer is required to perfonn a subsurface investigation of the proposed site to determine any special considerations prior to construction. 3. Subgrade shall be sloped per typical cross-sections. 4. Subgrade shall be a minimum 95% compaction Standard Proctor except the top 12 inches, which shall be at 100% compaction Standard Proctor. 5. The sub grade in paved areas shall be proof-rolled with a loaded dump truck or similar pneumatic tired vehicle with a loaded weight of at least 20 tons. Any identified unstable areas shall be repaired. 6. Areas that rut or pump during the proof-roll shall be undercut to stable soils or an evaluation made by the Developer's Engineer or qualified geotechnical firm to determine is some other method of subgrade stabilization is appropriate. Approved methods of stabilization shall include lime stabilization of high plasticity clays or excessively wet soils, the use of geosynthetic or geogrid material, or other stabilization methods as approved by the Engineering Director. 02-12 Streets Division 02 e e e e . e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 7. Stone base shall be compacted to 100% Standard Proctor and proof-rolled prior to placing asphalt. 8. In lieu of stone base course, a bituminous concrete base course, type HB may be substituted Detaìls 02.01.01-02.01.07. 9. Bituminous concrete base course, type HB, shall be used 111 widening strips less than 5 feet in width. 10. Asphalt shall be compacted to a minimum of 95% Standard Proctor. 11. Finished asphalt surface course shall promote positive drainage to the curb line. 12. All asphalt cuts shall be made with a clean cut when preparing street surfaces for patching or widening strips. 13. Surfaces shall be tacked when asphalt is being placed over existing asphalt streets or when newly placed asphalt base course is more than 7 days old. 14. No Developer or Contractor shall engage in the placement of asphalt between the dates of December 1 through March 15 due to weather conditions without prior approval from the Engineering Director. ~o proposed street or roadway shall be accepted for maintenance if asphalt is placed during this time period without the expressed written consent of the Engineering Director. 15. A canvas cover or other suitable cover shall be required for transporting plant mix asphalt during cool weather when the following conditions are present: a. Air temperature is below 60° F. b. Length of haul from plant to job is greater than five (5) miles. c. Other occasions at the Inspector's discretion when a combination of factors indicate that material should be covered in order to assure proper placement temperature. 16. Curb shall be placed at a minimum g{'ade of 1.0% except at street intersections. 17. All broken curb shall be replaced prior to placing the final asphalt surface course. 18. All curb and gutter shall be backiilled with approved soil within 3 to 5 days following construction. 02-13 Streets Division 02 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 02.03.06 19. Straight forms shall not be used for forming curb and gutter in curves of radii less than 100 feet. 20. All excess concrete on the front edge (lip) of gutter shall be removed when curb and gutter is poured with a machine. 21. All machine curb and gutter shall have contraction jomts located a maximum of every 15 feet and expansion joints located a maximum of every 90 feet. All formed curb and gutter shall have contraction joints located a maximum of every 10 feet and expansion joints located a maximum of every 60 feet. 22. When curb and gutter are placed adjacent to sidewalk, the joints shall align. 23. All sidewalks shall be steel trowled and have a light broomed finish. 24. All sidewalks shall have a lateral slope of I/¡ inch per foot. 25. All sidewalks shall have contraction joints located every 5 feet and expansion joints located a minimum of every 60 feet. 26. All sidewalks shall be a minimum of 4 inches thick. 27. Sidewalks shall be minimum of 5 feet wide unless otherwise noted on the approved plan. 28. Accessible ramps are required per the North Carolina State Building Code, Volume I.C, latest edition, and per Details 02.05.01-02.05.03. ROADW A Y CONSTRUCTION TOLERANCES The following tolerances shall be enforced until the end of the warranty period. 1. Any concrete section of sidewalk or curb and gutter that has a crack that measures greater than 1/8" horizontal separation or measures any vertical separation shall be removed and replaced. 2. Any concrete section of sidewalk or curb and gutter that has 3 cracks that measure less than 1/8" horizontal separation within any IS-foot section shall be removed and replaced. 3. Any pavement that has three or more repairs (utility cut repair or failure repair) within any 100-foot section shall be resurfaced between and including the two outer most repairs. 4. Any ponding in the gutter that is greater than 2.5 feet of longitudinal length for a time period greater than 12 hours following the last rainfall shall be corrected. 02-14 Streets Division 02 e e e e e · e DIVISION 03.00 e EROSION AND SEDIMENTATION CONTROL e e e . THIS PAGE IS INTENTIONALLY LEFT BLANK e e e e e e e e CITY OF MONROE 03.01 03.01.01 03.01.02 STANDARD SPECIFICATIONS AND DETAIL MANUAL 03.00 EROSION AND SEDIMENTATION CONTROL GENERAL REQUIREMENTS 1. General requirements are listed in the City of Monroe Erosion and Sedimentation Control Ordinance, Chapter 158 of the City Code. 2. In cases where a subdivision developer will also be constructing on individual lots within the subdivision, the Erosion and Sedimentation Control Plan Review and Approval may be completed simultaneously. It is the property owner's ultimate responsibility to ensure that all I and- disturbing activities are properly permitted and maintained in accordance with all local state, and federal requirements. (Separate ESC Plan or ESC Installation & Maintenance Agreements are required for property owner's building within an approved subdivision under construction by a separate developer. ) 3. If property changes ownership at any time during the course of land- disturbing activity or before permanent erosion control measures are established, the new property owner must submit a revised Installation & Maintenance Agreement or Financial Responsibility Form for the property. 4. The Erosion and Sedimentation Control Ordinance requires erosion and sedimentation control measures to be installed in areas of land-disturbing activity to prevent accelerated erosion and movement of soil from the project location. Any activities which transport soil, mud or dust onto the public right-of-way or adjacent private properties will cause the person conducting the land-disturbing activity to be in violation of the Erosion and Sedimentation Control Ordinance and subject to applicable penalties COMPUTATIONS 1. All computations and assumptions used to formulate an erosion control plan shall be in accordance with the City of Monroe's Stormwater Ordinance and the City of Monroe's Erosion and Sedimentation Control Ordinance and shall be reviewed by the City of Monroe Engineering Department. 2. Erosion and sedimentation control measures, structures, and devices shall be planned, designed, and constructed to control the calculated peak runoff from a 10-year frequency storm. 03-1 Erosion and Sedimentation Control Division 03 CITY OF MONROE 03.01.03 03.01.04 STANDARD SPECIFICATIONS AND DETAIL MANUAL 3. Runoff rates shall be calculated using the USDA Soil Conservation Service Method, the Rational Method, or other acceptable calculation procedures as approved by the Engineering Director. 4. Runoff computations shall be based on rainfall data published by the National Weather Service for this area. The National Weather Service website is http://www.nws.noaa.gov/. SCHEDULING 1. Temporary and permanent erosion control measures shall be provided for all land disturbing work in accordance with an erosion control plan reviewed and approved by the City of Monroe Engineering Department. 2. A grading permit shall be obtained from the City of Monroe Engineering Department prior to beginning site work. 3. Erosion Control measures shall be installed by the Developer and inspected by the City of Monroe Engineering Department for compliance prior to any land disturbing activity. 4. All permanent erosion control measures shall be incorporated into the work at the earliest practical time. 5. All temporary measures shall be maintained until the permanent measures have taken effect or are approved for removal by the City of Monroe Engineering Department. 6. Temporary and permanent measures shall be coordinated to provide effective and continuous erosion control throughout the construction and post-construction period to minimize siltation of streams, lakes, reservoirs, and other impoundments, ground surfaces, and other property. 7. Temporary measures shall remain in place until the Engineering Director approves Certification Form 1-06 Final Erosion Control Acceptance Form. CONSTRUCTION SEQUENCE 1. Obtain grading permit. 2. Install all erosion control measures as shown. 3. Submit Certification Form 1-01, Primary Erosion Control Inspection Form, to the Construction Inspector at the initial on-site inspection. 4. Proceed with grading. 5. Clean sediment basins when one-half full. 03-2 Erosion and Sedimentation Control Division 03 e e e e e e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 03.02 03.02.01 6. Seed and mulch denuded area within 30 days after finished grades are established. 7. Maintain soil erosion control measures until a permanent ground cover is established. 8. Additional measures may be required based upon actual site conditions. 8. Submit Certification Form 1-06, Final Erosion Control Acceptance Fonn, to the Construction Inspector to schedule a final on~site inspection. 9. Remove soil erosion control measures and stabilize these areas upon approval of Certification Form 1-06. DESIGN All erosion control designs shall be in accordance with the NCDENR Erosion and Sedimentation Control Planning and Design Manual, latest edition, unless otherwise stated by this manual. TEMPORARY MEASURES 1. Silt Fence shall be installed in accordance with the details at the toe of all fill slopes and any other necessary locations as directed by the City of Monroe Erosion Control Inspector. 2. Diversion Ditches shall be installed in accordance with the details at the top of cut and fill slopes and any other necessary locations as directed by the City of Monroe Erosion Control Inspector. 3. Construction Entrances shall be installed at all points of access to construction sites in accordance with the details. Any access point which does not have a construction entrance shall be barricaded to prevent its use. 4. Sediment Traps or Filter Basins shall be installed in accordance with the appropriate details at all points where accumulated runoff is released to natural drainage channels, and any other necessary locations as directed by the City of Monroe. Sediment traps and filter basins shall be sized to hold a minimum of 1800 cubic feet of sediment for every acre of denuded area tributary to the structure. 5. Temporary Seeding is the use of rapid growing millual grasses, small grains or legumes to provide initial, temporary cover for erosion control on disturbed areas for less than 12 months. Seed bed preparations and soil amendments shall be in accordance with the method described under "Seeding and Mulching". 03-3 Erosion and Sedimentation Control Division 03 CITY OF MONROE 03.02.02 STANDARD SPECIFICATIONS AND DETAIL MANUAL 6. Seeding and Mulching shall be done immediately following construction. All disturbed areas shall be dressed to a depth of 8 inches. The top 3 inches shall be pulverized to provide a uniform seedbed. Agricultural lime shall be applied at the rate of 95 Ibs./lOOO sq. ft. immediately before plowing. Grass seed shall be applied at the rates outlined in Tables 03-01 and 03-02 in Standard 03.03.02, Seeding Requirements. 7. On projects that will be maintained by the City of Monroe, verification of soil amendments and seeding rates may be required, and changes to these rates may be requested by the City of Monroe during the plan review process. Reuse of topsoil and/or other measures to assure final soil conditions are conducive to rapid establishment of vegetation cover is required. 8. 5-10-10 fertilizer shall be applied to all disturbed areas at a rate of 21 Ibs./l000 sq. ft., and mulching shall consist of small grain straw applied at a rate of 70 Ibs./l000 sq. ft. Mulched areas shall be tacked with asphalt at a rate of 200 to 400 gallons per acre, or other approved method sufficient to hold the straw in place. 9. If active construction ceases, meaning no substantial or significant progress is made in any area for more than 30 days, all disturbed areas must be seeded, mulched, and tacked unless written approval is granted by the Erosion Control Officer. Incidental grading shall not constitute substantial or significant progress in construction activity. PERMANENT MEASURES 2. 1. Permanent Ground Cover is the establishment of perennial vegetation cover for periods longer than 12 months. All disturbed areas shall receive a permanent ground cover. Permanent seeding and temporary seeding differ only in the type of seed to be used (i.e. annual versus perennial). Seed bed preparations and soil amendments shall be in accordance with Standard 03.02.01, number 6, "Seeding and Mulching". As a part of permanent seeding, maintenance may be required to maintain vegetation for 12 months. This maintenance shall be considered a part of establishing permanent ground cover. Riprap Dissipation Pads and Riprap Protection - All stormwater release points shall be protected by riprap dissipation pads designed to reduce discharge velocities to non-erosive levels. Dissipation pads shall be designed and constructed with either an engineering fabric or washed stone barrier between the pad and the natural ground. Calculations shall be furnished to indicate the sufficiency of the dissipation pads specified. Riprap pad design shall be in accordance with NYDOT or NRCS methods found in the North Carolina Erosion and Sedimentation Control Planning and Design Manual. Filter fabric, or a washed stone liner, shall be used on all sediment basins, riprap dissipaters, and channels. 03-4 Erosion and Sedimentation Control Division 03 e e e e e e e e e e CITY OF MONROE 03.03 03.03.01 STANDARD SPECIFICATIONS AND DETAIL MANUAL CONSTRUCTION CONSTRUCTION NOTES 1. 2. Erosion control measures shan be installed prior to cle~ring operations. No land disturbing activity, except that which is required to install erosion control measures, may commence prior to approval of Certification Form 1-01 by the Engineering Director. Any failure to maintain erosion control measures will result in appropriate enforcement actions in accordance with the City of Monroe Erosion and Sedimentation Control Ordinance, the North Carolina Sedimentation Pollution Control Act of 1973 (NCGS Chapter Il3A, Article 4), and the North Carolina Administrative Code Title 15A, Department of Environment and Natural Resources Chapter 4. 3. If tàilures to maintain erosion control measures are not corrected, the City of Monroe will initiate enforcement action as authorized by the City Code of Ordinances. 4. Any existing streets that are affected by mud, debris, or sediment shan be cleaned within 24 hours of notice. If the streets are not cleaned within 24 hours of notice, the City will initiate cleaning and bill the developer in the amount of current policies. For a new subdivision, the City of Monroe shall not accept the right-of-way for maintenance until an outstanding bills are paid in full. 03-5 Erosion and Sedimentation Control Division 03 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 03.03.02 SEEDING REQUIREMENTS TABLE 03~01 SHOULDERS, SIDE DITCHES, SLOPES (Maximum 2:1) Date Aug 15 - Nov 1 ov 1 - Mar 1 Mar 1 - Apr 15 , pr 15 - June 30 JulY,15 - Aug 15 !I Planting Rate 300 Ib.lacre 300 lb.lacre 300 Ib.la 25 Ib.lac 35 Ib.lacre ,~ Tall Fescue or Hard Fescue Tall Fescue and Abruzzi Ryeor Annual Rye Tall Fescue or Hard Fescue Hulled Common Bermuda grass, Weeping Love Grass Tall Fescue and n"'Browntop Millet "'**or Sorghum-Sudan Hybrids Consult the City of Monroe Engineering Department or Natural Resources Conservation Service for additional alternatives for vegetating denuded areas. The above vegetation rates are those which do well under local conditions; other seeding rate combinations are possible. **"'Temporary - Re-seed according to optimum season for desired permanent vegetation. Do not allow temporary cover to grow over 12 inches in height before mowing to keep fescue from being shaded out. TABLE 03·02 SHOULDERS, SIDE DITCHES, SLOPES Slopes (3:1 and 2:1) Planting Rate 50 Ib.lacre Date 1 - June 1 "Type Sericea Lespedeza (scarified) and Add Tall Fescue Mar) - Apr 15 120 lb.lacre Mar I - June 30 or Add Weeping Lovegrass or Add Hulled Common Bermuda grass n"'Tall Fescue and '" n Browntop Millet """"'or Sorghum-Sudan Hybrids Sericea Lespedeza (unhulled/unscaritied) and Tall Fescue Add Abruzzi Rye or Annual Rye . 25 Ib.lacre 10 Ib.lacre Mar I . June 30 June 1 - Sept 1 25 Ib.lacre 120 Ib.lacre 35 Ib.lacre 30 Ib.lacre 70 Ib.lacre 120 Ib.lacre Sept 1 - Mar 1 J Consult City of Monroe Engineering Department or NRCS for additional alternatives for vegetating denuded areas. The above vegetation rates are those which do well under local conditions; other seeding rate combinations are possible. """"'Temporary· Reseed according to optimum season for desired permanent vegetation. Do not allow temporary cover to grow over 12 inches in height before mowing to keep fescue from being shaded out. 03·6 Erosion and Sedimentation Control Division 03 e e e e e e e DIVISION 04.00 e STORM DRAINAGE COLLECTION FACILITIES e e e e THIS PAGE IS INTENTIONALLY LEFT BLANK e e e e e e e . CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 04.01 04.00 STORM DRAINAGE COLLECTION FACILITIES GENERAL 1. Adequate storm drainage shall be provided throughout the development by means of storm drainage pipe, box culverts, or properly graded channels. 2. Storm drainage pipe shall be placed at all low points in street grade to transmit storm water transversely across the street with catch basins being constructed on both sides of the street at the low point. 3. A comprehensive storm drainage system shall be planned and implemented for each sub-division in accordance with the general standards and requirements of this division. The general storm drainage plan shall be shown on the preliminary plan. Detail plans where required shall be submitted as part of the construction plan requirement. Where easements are required, they shall be noted on the final plat. 4. Storm drainage plans shall be considered on an individual basis depending upon the situation within a given subdivision. The requirements of Chapter 151, Flood Damage Prevention. of the City of Monroe Code of Ordinances shall apply to storm drainage design where applicable. Generally the following standards shall apply: A. Types of drainage ways requiring treatment. I. Those draining one acre of land or more. 11. Those carrying storm water runoff from public streets either existing or proposed. 111. Those carrying storm water runoff from large impervious surfaces other than streets. B. Design storms. 1. Open drainage channel - 25-year storm. 11. Enclosed systems - 10-year storm for collectors and 25- year storm for street crossing conduits and immediate downstream areas. 111. 100-year storm where required by Chapter 151, Flood Damage Prevention of the City of Monroe Code of ,Ordinances. 04-1 Storm Drainage Collection Facilities Division 04 CITY OF MONROE 04.02 04.02.01 DESIGN STANDARD SPECIFICATIONS AND DETAIL MANUAL C. Types' of treatment. I. Enclosed subsurface drains; 11. Open, improved channel; 111. Open chatmel with flood plain and open space dedicated to the City of Monroe. This option shall not be available except in cases where the City Council agrees in principle to accept such dedication prior to final plat approval. Any considering such proposed dedications, the City Council shall cons'ider, among others, the following characteristics of the proposal: size and shape; physical condition; suitability as open space; ease of maintenance; access; relationship to surrounding property; and relationship to open space in the vicinity. D. Easements. 1. Maintenance easements and City utility easements may be required depending upon the size of the drainage way and the maintenance responsibility as determined by the TRC. 11. In any case whether maintenance is to be the responsibility of the property owner, the City may require a right to enter for maintenance purposes where the City Council determines that the public health, safety, Of general welfare constitutes a public necessity for such maintenance. DESIGN CRITERIA 1. The following criteria shall be used for drainage collection facilities within right-of-ways to be accepted by the City: I. Pipe shall be 15" ~ 60" RCP Class III or, 11. Greater than 60" pipe (or arch equivalent) may be aluminum or aluminized pipe subject to approval from the Engineering Director. Ill. Drainage pipe for driveways may be corrugated metal pipe, with a 12" minimum diameter required. IV. The minimum cover for all pipes, except driveway pipes, shall be 2 feet. Exceptions may be granted at the option of the Engineering Director dependent upon the field conditions and if adequate treatment is provided. 04-2 Storm Drainage Collection Facilities Division 04 e e e e e e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL v. The minimum grade for pipes shall be 0.5%. vJ. The maximum grade for pipes shall be 5%. Vll. The minimum angle of entry for a pipe into a "built" structure shall be 75 degrees. Vlll. The minimum angle of entry for a pipe into a "pre-cast" structure shall be 90 degrees or other subject to approval by the Engineering Director . IX. The minimum grade for open channels shall be 1.0% unless otherwise approved by the Engineering Director. Ditches must be properly stabilized with positive fall prior to acceptance by the City of Monroe. x. The Developêr and his Contractor will be required to provide positive drainage and fall along all channels. Xl. The Developer and his Contractor shall ensure all ditches are stabilized prior to final acceptance of the development by the City of Monroe. Xll. The maximum side slope for open ditches shall be 2H : 1 V unless otherwise approved by the Engineering Director. 2. Cross drainage pipes that continue the natural flow of water across a proposed street shall be designed for a storm of the 25-year return period. 3. Collection system pipes that move water along a proposed street shall be designed for a storm of the 10-year return period. 4. 5. Public storm drainage easements shall be required on all open storm drainage chatmels and storm drainage pipes outside the street right- of- way as follows: Open channels 0-45 Acres = 20' min. easement required >45 Acres = As directed by the Engineering Director Storm drainage pipe* 15",18",24" = 15' min. easement required 30",36",42" or 48" = 20' min. easement required 54" Plus = 30' min. easement required * Pipe outside the street right-of-way may be HDPE The minimum allowable velocity for storm drainage systems is 2.5 feet per second. (this must be verified by certified design calculations) 04-3 Storm Drainage Collection Facilities Division 04 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 04.02.02 6. Double catch basins shall be required where more than 2 acres of runoff is to be collected at a single given point except where deviations are allowed by this manual. 7. Subject to approval by the Engineering Director, single catch basins may be allowed for Note Numbers 6 if an adequate design can prove to limit the stormwater spread in the flow line of the street to 1/3 of width from the edge of pavement to the centerline of the street for a 10-year return period storm. 8. Not more than one-half acre or 2 cfs of runoff based on a storin of the 10- year return period may drain into the street at a single concentrated point. 9. Any low-point that occurs in a superelevated section shall only be required to have one catch basin on the low side. However, to ensure water does not flow across the street, a catch basin will be required within 20 feet prÌor to the transition from normal crown. 10. Where the direction of longitudinal slope along a street is continuous for more than five hundred (500) feet, but less than one thousand (1,000) feet, storm drainage pipe shall be placed longitudinally in the right of way for a distance of at least one-half the slope length, to transmit storm water to the nearest low point in the street grade. Catch basins shall be constructed on both sides of the street at the upstream end of the longitudinally placed storm drain, and connected thereto. Refer to Detail 04.06.01. 11. Where the direction of the longitudinal slope along a street is continuous for one thousand (1,000) feet or more, storm drainage pipe shall be placed longitudinally in the right of way for a distance equal to at least the slope length less five hundred (500) feet, to transmit storm water to the nearest low point in the street grade. Catch basins shall be constructed on both sides of the street at the upstream end and at intervals not exceeding five hundred (500) feet along the longitudinally placed storm drain and cOlmected thereto. Refer to Detail 04.06.01. 12. If storm drainage pipe does not extend a minimum of 10 feet beyond the back of sidewalk with a 3: 1 slope or flatter (depending on depth of cover, height of fill, etc.), a hand rail may be required at the discretion of the Engineering Director. HYDROLOGICAL ANALYSIS 1. For drainage areas consisting of less than or equal to 200 total acres, the Engineer shall provided calculations by use of the Rational Method, SCS Method, or method by which the Design Engineer is most familiar and can support with calculations, subject to approval by the Engineering Director. 04-4 Storm Drainage Collection Facilities Division 04 e e e e e e e e e e CITY OF MONROE 04.02.03 04.03 04.03.01 04.03.02 04.03.03 STANDARD SPECIFICATIONS AND DETAIL MANUAL 2. For drainage areas consisting of greater than 200 total acres, the Engineer shall provided calculations by use of the SCS Method, or method by which the Engineer is most familiar, subject to approval by the Engineering Director. 3. Design nomographs, charts, tables, and a sample calculation for pipe sizing utilizing the Rational Method are provided in Appendix A. A digital Excel spreadsheet of A7 with fommlas may be obtained ÍÌ'om the Engineering Department. 4. The Engineer shall submit a copy of all storm drainage calculations with the plans to the City of Monroe Engineering Department for review. CONSTRUCTION PLANS I. For Construction Plan Requirements, refer to Standard 0 1.07 ROADWAY AND STORM DRAINAGE CONSTRUCTION PLAN REQUIREMENTS. CONSTRUCTION STANDARD SPECIFICATIONS AND PLAN REQUIREMENTS 1. All construction shall be in accordance with the City of Monroe Standard Specifications and Detail Manual. Where a construction item may not be covered by this manual, the NCDOT Standard Specifications for Roads and Structures, latest edition, and the NCDOT Roadway Standard Drawings, latest edition, shall govem. INSPECTIONS BY DEVELOPER 1. The Developer, his Agent, Engineer, and Contractor shall be responsible for developing a "Quality Control Program" that will be reviewed at the preconstruction meeting. 2. All inspections and testing shall be in accordance with Standard 01.08 INSPECTIONS of this manual. INSPECTIONS BY CITY 1. The City shall designate a construction inspector for each subdivision. The inspector shall make daily visits to the job·site to observe the progression of the work and will advise the contractor of any defects that are identified during inspections. However, failure to identify any defects shall not relieve the Developer, his Agent, Engineer and Contractor of their responsibility to complete the work in accordance with the approved plans and specifications and the City of Monroe Standard Specifications and Detail Manual. 04-5 Storm Drainage Collection Facilities Division 04 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 04.03.04 04.03.05 2. All inspections and testing shall be in accordance with Standard 01.08 of this manual. MA TERlALS 1. All materials used shall be in accordance with Division 10 of the NCDOT Standard Specifications for Roads and Structures, latest edition. CONSTRUCTION NOTES 1. All roadway construction methods shall be in accordance with the City of Monroe Standard Specifications and Detail Manual, and the NCDOT Standard Specifications for Roads and Structures, latest edition except where otherwise noted. 2. All storm drain pipes shall be placed to proper grade and alignment per approved plans. 3. No cracked or broken pipes shall be placed or accepted in construction of the project. 4. All catch basins 3' 6" deep or more shall have steps placed at l' 2" on center. 5. Erosion control measures shall be placed around drainage inlets and catch basins. 6. All pipes in stonn drainage structures shall be cut off flush with the inside wall. 7. All structures shall be smooth inside and outside of the structure using mortar mixed to manufacturer's specifications to avoid debris build-up obstructing flow. 8. All tail ditches shall have positive drainage with a minimum 1.0% slope. 9. The Developer shall obtain any off-site drainage easement from adjacent property owners required to complete the improvements or provide positive drainage flow prior to construction plan approval. 10. All concrete for drainage structures shall bc a mll1m1Um of 3,600 pSI except where otherwise noted or required. 11. If the Developer wishes to use any pre-cast storm drainage structures within a proposed street right-of-way, he must submit a Professional Engineer certification for the structurc. All structures must be certified to adequately carry H20 loading. Prior approval from the Engineering Director shall be obtained in order to incorporate ANY pre-cast storm drainage structures in a proposed strcct right-of-way. 04-6 Storm Drainage Collection Facilities Di vision 04 e e e e e e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 12. Under no circumstances shall a pre-cast storm drainage structure be cut or altered without a Professional Engineer's Certification of adequate load bearing strength following the alteration of the structure, except where designated "knock-out" panels are provided. 13. Under no circumstances shall water be permitted to rise in unbackfilled trenches after the pipe has been placed. 14. The laying of pipe in the finished trench shall be started at the lowest point and laid upgrade. The bell shall be laid upgrade. 15. Survey staking and proposed grades shall be consistent with plans and field conditions. 04-7 Storm Drainage Collection Facilities Division 04 e e THIS PAGE IS INTENTIONALLY LEFT BLANK e e e e e DIVISION 05.00 e STORMWATER CONTROL STRUCTURES e e e e THIS PAGE IS INTENTIONALLY LEFT BLANK e e e e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 05.01 05.01.01 05.01.02 05.01.03 05.01.04 05.00 STORMW A TER CONTROL STRUCTURES GENERAL GENERAL NOTES 1. Stormwater Management practices shall be utilized in accordance with Chapter 155, Watershed Protection Ordinance, and Chapter 159 Stonnwater Management Ordinance, of the City Code. EXEMPTIONS 1. Certain activities are exempt from this division in accordance with the requirements of Chapter 159 Stonnwater Management Ordinance of the City Code. RIGHT OF ENTRY I. The Engineering Director or his designee shall have right-of-entry to the property of any person in accordance with the requirements of the City of Monroe Stonnwater Management Ordinance and any permit/document issued under said Ordinance. STORMW A TER MANAGEMENT PLAN REQUIREMENTS 1. A stormwater management plan and separate maintenance agreement in accordance with the requirements of the City of Monroe Stormwater Management Ordinance shall be submitted to the City of Monroe Engineering Department. 2. A professional, as defined in Standard 01.04, Note 1, licensed in the State of North Carolina, shall sign and seal any structural stormwater management improvement required by the City of Monroe Stormwater Management Ordinance. 3. The following information shall be included on all plans: 1. Indicate the name of Watershed (i.e., Lake Twitty or Lake Lee) if applicable, for the proposed site development; 11. Show the existing impervious coverage, if any, and note the square footage; 111. Show the proposed impervious coverage, and note the square footage; IV. Note the maximum amount of built-upon area per allowable percentage (per Watershed Ordinance) if applicable; 05-1 Stormwater Control Structures Division 05 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL v. Area(s) to be disturbed or denuded and note the acreage; VI. List the NRCS soil types and characteristics; VU. Show existing and proposed storm water collection facilities (pipes, channels, swales, catch basins, etc.) proposed layouts, connections to existing systems, and applicable easements; VUI. Label stormwater structure attributes (pipe size, channel I swale dimensions, materials, inverts and rim elevations, slopes and structure types (grate inlet, manhole, etc.)); IX. Label the amount of drainage area and runoff quantities that discharge onto site; x. If the site was previously approved or part of a subdivision that was previously approved by the City of Monroe for stormwater management or watershed development, provide the name of the plan and the date that the plan was approved; Xl. Show the location of all streams and drainage ways that require buffers; Xu. Show buffers and where measured from (that is, top of bank, top of steep slopes adjacent to stream, or edge of wetlands); XUI. Label the dimensions and restrictions within the buffer (that is, to remain undisturbed, 50% impervious, vegetated, etc.); Xl v. Show the location of jurisdictional waters and wetlands; xv. Indicate proposed location of stream crossing(s) showing the proposed grading and overall stream impact (includes culvert and outlet protection length); XVI. Show FEMA-regulated floodway fringe on property and note the 100-year flood limits, if applicable; 05-2 Stormwater Control Structures Division 05 e e e e e e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 05.01.05 05.01.06 XVII. For sites located within FEMA Special Flood Hazard Areas: A. Note the finished floorlfloodproofing elevations of all structures; B. Note that no encroachment/development into FEMA- regulated floodway is permitted except as specifically listed in the Flood Hazard Ordinance; C. If a FEMA-designated floodway/floodway fringe does not exist on the property/parcel, note the nearest distance to a FEMA-designated floodway, if within 2000 feet. STORMW A TER MANAGEMENT IMPROVEMENTS AND MAINTENANCE 1. No building certificate of occupancy shall be issued by the City of Monroe prior to completion of any and all required and approved structural stormwater management improvements. 2. No recordation of the final plat or release of bond guaranteeing the improvements shall be allowed prior to completion of any and all required and approved structural stormwater management improvements. 3. Any and all access and/or maintenance easements shall be in accordance with the City of Monroe Stormwater Management Control Ordinance. 4. The Developer shall submit as-built drawings that include all permanent stormwater management practices associated with and constructed in the development. Refer to Standard 07.13 AS-BUILT DRAWING CHECKLIST. 5. Prior to acceptance of a permanent storm water management facility, the applicant must submit an Operation and Maintenance Plan Agreement. An example of this agreement can be found in Standard 07.04 Official Operation and Maintenance Plan Agreement forms shall be obtained by the Developer from the City of Monroe Planning Department. STORMW A TER CONTROL REQUIREMENTS I. The Developer and his Engineer shall be responsible for meeting the requirements of the City of Monroe Stormwater Management Control Ordinance and ensure that the proposed development does not cause off- site flooding, drainage, or erosion problems. 05-3 Storm water Control Structures Division 05 C[TY OF MONROE 05.02 05.02.01 05.02.02 STANDARD SPECIFICATIONS AND DETAIL MANUAL RETENTION AND DETENTION PONDS GENERAL POND DEVELOPMENT NOTES 1. When required, retention and detention ponds shall be installed in accordance with the details found in this manual. Modifìcations to the details will be acceptable to accommodate individual site conditions. Details shall be placed on the plan and reviewed for approval by the Engineering Department as part of the plan approval process. 2. Retention ponds for water quality shall be designed in accordance with NCDENR Stormwater Best Management Practices, latest edition which is available for downloading at the following website: http://h20.enr.state.nc.us/su/Manuals_Factsheets.htm # Manuals' 3. Detention ponds for flood control shall be designed utilizing the NRCS method, TR-55 method, or other standard practice methods, subject to approval from the Engineering Director, and must demonstrate that post- development stormwater volume is less than or equal to the pre-existing volume for the 2-year and 10-year return period stonn for sites exceeding 20,000' square feet in new impervious coverage. A TR-55 computer program is available for free downloading at the following website: http://www.wec.nrcs.usda.gov/water/quality/common/tr55/tr55.htm I PROJECT PROVISIONS FOR CONSTRUCTION OF WATERSHED POND AND OUTLET CONTROL STRUCTURE 1. Construction of the watershed pond and outlet structure shall be completed in strict compliance with the approved plans unless otherwise approved by the Professional of Record and the City Engineering Department. Approval of the drawings indicate that the Professional of Record has demonstrated to the City Engineering Department that the proposed construction is in accordance with the Monroe Watershed Ordinance and the NCDENR guidelines for 85% efficiency in pollutant removal. Deviations from the pond design, including surface area of the pond, depth and outlet structure cannot be altered in the field without prior approval. 2. Prior to the start of construction, an on-site Pre-Construction Meeting must be held with the Professional of Record and the City Construction Inspector. The contractor is responsible for arranging this meeting. Contact the City of Monroe Engineering Department at 704-282-4515. 3. Periodic inspections of the construction will be perfonned by the City Engineering Department. The City's Construction Inspector is to be contacted a minimum of 48 hours prior to the start of construction. 4. The owner and his contractor are responsible for insuring all methods of construction are in accordance with standard practice of the industry. 05.4 Stonnwater Control Structures Division 05 e e e e e e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 5. Dam and Embankment Construction. A. The pond and dam area shall be cleared, grubbed and stripped of all vegetative material and topsoil prior to dam construction. The disposal of trees, stumps, construction debris, vegetative material, etc., shall not be permitted in the dam or pool area of the pond. When blasting is used to remove rock from the pool area, the blasted area shall be over-excavated to a depth of at least two feet (2') below finish grade and brought back to finish grade with clean, relative impervious soil material compacted in place. B. Soil materials used for earth fill which are highly permeable or which exhibit significant shrink/swell or dispersion shall not be used in the embankment unless specific detailed design report from a soil's engineer is submitted as part of the plan approval. C. A cutoff trench (core trench) shall be provided with a minimum width of four feet (4'). The center! ine of the cutofT trench shall be aligned with the centerline of the dam. The cutoff trench shall be carefully backfilled with highly impermeable material and compacted at least 95% of standard proctor density. D. S lopes shall not be steeper than 3: 1 (three horizontal to one vertical) on the dam or embankments around the pond. E. Embankments shall be properly compacted to 95% of the standard proctor. F. All disturbed areas and embankments surrounding the pond shall be mechanically stabilized or have permanent ground cover established upon completion of construction. G. The outlet control structure and outlet pipe shall be constructed to maintain water tightness at all joints. 6. Final acceptance of the watershed pond construction by the City Engineering Department will be contingent upon the following: A. If the watershed pond IS used as a sediment trap during construction, all accumulated sediment must be removed from the , basin area. B. The pond is at permanent pool elevation and functioning without leakage through the outlet structure or impoundment (wet pond only). C. A certification has been received from the Professional of Record that the pond construction has been completed in accordance with the approved plans and specifications. 05-5 Stormwater Control Structures Division 05 CITY OF MONROE 7. 05.03 STANDARD SPECIFICATIONS AND DETAIL MANUAL D. The Construction Inspector has verified that the pond has been constructed in accordance with the approved plans and specifications. E. All disturbed areas within the immediate vicinity of the pond have been properly stabilized. F. Deviations from the approved plans or deficiencies in construction must be addressed prior to the final inspection of the watershed pond and outlet structure by the City Engineering Department. G. Prior to release of the certificate of occupancy, the applicant must present an as-built survey of the property prepared and sealed by a Professional Land Surveyor, Professional Engineer, or Architect licensed by the State of North Carolina. Such as-built survey shall show the location and dimension of all impervious coverage and the total amount of impervious coverage built as a percentage of the total site. The as-built survey shall also verify pond construction, including but not limited to permanent pool elevation, spillway elevation, top of bank elevation, depth, and surface area. The certificate of occupancy shall not be released if the impervious coverage of the site exceeds that allowed by the permit issued. Revisions to the approved drawings due to field conditions are to be initiated by the owner and his contractor through the Professional of Record and will require approval from the City Engineer. The Construction Inspector does not have the authority to approve revisions or waive requirements identified by the approved plans or the City of Monroe Standard Specifications and Detail Manual. STREAM PROTECTION AND BUFFER ZONES 1. Perennial streams within a designated water supply watershed may not be channelized or piped, except as approved by the City of Monroe in accordance with Chapter 155 of the Watershed Protection Ordinance. All applicable federal and state permits and certifications must be obtained prior to approval by the City. 2. Perennial streams that are outside of a designated water supply watershed and other streams that are not classified as perennial may be channelized or piped, but only after obtaining all applicable federal and state permits and certifications. 3. Buffer zones and widths shall be in accordance with Chapter 155, the Watershed Protection Ordinance and Chapter 159, the Stormwater Management Ordinance. 05-6 Stormwater Control Structures Division 05 e e e e e e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 05.05 OTHER PRACTICES 1. In lieu of installing retention and detention ponds and subject to approval from the City, the Engineer can combine various Best Management Practices to achieve removal of 85% total suspended solids in accordance with the NCDENR Stonnwater Best Management Practices Manual, latest edition. However, the Best Management Practices must meet all local, state, and federal watershed and stonnwater management regulations. 05-7 Stonnwater Control Structures Division 05 e e THIS PAGE IS INTENTIONALLY LEFT BLANK e e e e e DIVISION 06.00 e LANDSCAPING e e e e THIS PAGE IS INTENTIONALLY LEFT BLANK e e e e e e . . CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 06.00 LANDSCAPING 06.01 GENERAL I. All planting of street trees shall be in accordance with the American Standard for Nursery Stock, latest edition and shall be positioned in accordance with Detail 02.01.03 and Detail 02.01.04. 06.02 ACCEPTED TREES FOR STREET TREE PLANTINGS 1. The following trees are acceptable for street tree plantings: A. LARGE STREET TREES Common Name Bald cypress Chinese elm Chinese Pistache Japanese zelkova Littlelea[ linden Gingko, male (Autumn Gold, Saratoga, Shangri-la) Red maple Red oak Seedless green ash (Marshall's Seedless, Summit) Shumard oak Sugar maple Thornless honeylocust (Shademaster, Skyline) White ash Willow oak 06-1 Botanical Name Taxodium distichum Ulmus parvifolia Pistacia chinensis Zelkova sermta Tilia cordata Gingko Acer rubrum Quercus rubra Fraxinus pennsylvanica Marshall's Seedless', summit' Quercus shumardii Acer saccharum Gleditsia triacanthos inermis Fraxinus americana Quercus phellos Landscaping Division 06 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL SMALL STREET TREES (Small trees to be used where large trees may interfere with overhead power lines.) B. Common Name American Smoketree Amur maple Blackhaw Viburnum Carolina CherrylaureJ Chalkbark Maple Cherry Plum Crape Myrtle Eastern Redbud Flowering Crabapple Hollies Japanese Apricot Japanese Cherry Japanese Maple Japanese Snowbell Korean Evodia Kousa Dogwood Magnolia Paperbark Maple Purpleblow Maple Sourwood Southern Waxmyrtle Yoshino Cherry Botanical Name Colinus coggygria Acer ginnala Viburnum prunifolium Prunus caroliniana Acer leucoderme Prunus cerasifera Lagerslroemia indica Cercis canadensis Malus 'Adirondack', 'David 'jloribunda, 'Prari fire , , 'Sugar Tyme' llex spp. Frunus mume Prunus serrulala Acer palm alum Styrax japonicus Telradium daniellii Corn us kousa Magnolia spp. Acer griseum Acer lruncalum Oxydendrum arboreum Myrica cerasifera Prunus Yedoensis 06-2 Landscaping Division 06 e e e e e e e DIVISION 07.00 e PERMITS, CHECKLISTS, AND FORMS e e e e THIS PAGE IS INTENTIONALLY LEFT BLANK e e e e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL. MANUAL 07.00 PERMITS, CHECKLISTS, AND FORMS 07.01 PERMIT CONT ACT INFORMATION The following is contact information for typical permits and approvals associated with development. Some permits or approvals may not apply and other permits or approvals may be required. It is the Developer/Contractor's ultimate responsibility to secure all applicable permits and approvals prior to the start of construction. 1. Erosion Control Certificate of Approval Engineering Director City of Monroe Engineering Department PO Box 69; Monroe, NC 28111-0069 300 W. Crowell Street; Monroe, NC 28112 Phone: (704) 282-4515 Fax: (704) 282-4735 2. Grading Permit Permit Technician City of Monroe Planning and Development Department PO Box 69; Monroe, NC 28111-0069 300 W. Crowell Street; Monroe, NC 28112 Phone: (704) 282-4520 Fax: (704) 282-4735 3. Roadway, Storm Drainage, and Flood Control Review Engineering Director City of Monroe Engineering Department PO Box 69; Monroe, NC 28111-0069 300 W. Crowell Street; Monroe, NC 28112 Phone: (704) 282-4515 Fax: (704) 282-4735 4. Water Supply System Permit North Carolina Department of Environment and Natural Resources Division of Environmental Health; Public Water Supply Section 1634 Mail Service Center Raleigh, NC 27699-1634 Phone: (919) 733-2321 07-1 Permits, Checklists, and Forms Division 07 CITY OF MONROE 5. STANDARD SPECIFICATIONS AND DETAIL MANUAL Gravity Sewer, Pump Stations, and Force Main Permit North Carolina Department of Envirolli11ent and Natural Resources Division of Environmental Health; Non-Discharge Permitting Unit 1617 Mail Service Center; Raleigh, NC 27699-1617 512 N. Salisbury St., Suite 1219; Raleigh, NC 27604 Phone: (919) 733-5083 Fax: (919) 715-6048 6. Water and Sanitary Sewer Review 7. 8. Water Resources Engineer City of Monroe Water Resources Department PO Box 69; Monroe, NC 28111-0069 2401 Walkup Avenue; Monroe, NC 28110 Phone: (704) 282-4600 Fax: (704) 283-6492 North Carolina Department of Transportation Encroachment Agreement (if required) District Engineer North Carolina Department of Transportation Monroe District Office 130 S. Sutherland Avene Monroe, NC 28112 Phone: (704) 289-1397 Fax: (704) 292-1800 North Carolina Department of Transportation Driveway Permit (if required) District Engineer North Carolina Department of Transportation Monroe District Office 130 S. Sutherland Avene Monroe, NC 28112 Phone: (704) 289-1397 Fax: (704) 292-1800 07-2 Permits, Checklists, and Forms Division 07 e e e e e e e e e e CITY OF MONROE ST ANDARD SPECIFICATIONS AND DETAIL MANUAL 07.02 DEVELOPMENT REVIEW & PROCEDURE CHECKLIST Notc: Typical review time and comment periods for a project depends on coordination between the applicant and their surveyor or enginecr, the applicant and the Planning Department, the Planning Department and other departments, complexity and size of the project, and completeness and ~\ccuracy of the information submitted. _ Receive subdivision plat checklist from the Department of Planning and Development. _ Submit 5 copies of a sketch plan for review along with a completed subdivision plat checklist to the Department of Planning and Development. (Sketch plans may be submitted at any time). The sketch plan is processed and reviewed as follows: >- Subdivision plats are routed to departments for review and recommended conditions >- Comments fi-om involved departments are returned and then reviewed by the Planning Department. >- Sketch Plan is reviewed and discussed at monthly Technical Review Committee (TRC) meeting (contact 704-282-4520 for current schedule) >- Applicant is called to pick up the sketch plan with redline comments _ Pick up the sketch plan with redline comments (Sketch Plan approval shall entitle the surveyor or engineer to prepare the Preliminary Plat). _ Submit Preliminary Plats to the Department of Planning and Development for review, along with a completed subdivision plat checklist. The preliminary review process will be reviewed with the same procedure as the sketch plan. For all speciaL use rezonings and subdivisions, the foLLowing items must be compLeted and submitted to the Department of PLanning and Development: _ Completed General Use Rezoning application. _ Completed Special Use Permit application. Cash or check in accordance with current established fee schedule to cover the - cost of both applications. Checks should be payable to the City of Monroe. _ A legal description of the property, and documentati~n to support the petition. _ A synopsis or overview of the project with proposed design standards. _ Adjacent property owners typed on mailing labels. 07-3 Permits, Checklists, and Forms Division 07 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL _ Submit additional cQpies of the Preliminary Plat if needed, after all comments have been changed or addressed. For all special use rezonings and subdivisions, submit the following to the Department of Planning and Development: e _ 25 copies of an appraisal report by a state certified real estate appraiser that conforms to Standard 5 of the Uniform Standards of Professional Appraisal Practice (must be submitted a minimum of 10 days prior to Plam1ing Board meeting - Contact 704-282-4520 for current schedule). Planning Board meeting (is typically held on the Wednesday following the first City Council meeting of the month). For all special use rezonings and subdivisions: City Council Meeting - Typically held about 30 days after Planning Board (applicant will be notified). e Receive a copy of the Special Use Permit once it has been signed and sealed by the Mayor and City Clerk. - The Special Use Permit is signed by the owners, sealed, and notarized. Submit signed form to the Plmming Department for recordation at the Union County Register of Deeds Office. e Submit construction plans (civil drawings) to the City of Monroe Engineering Department and to the City of Monroe Water Resources Department for review and approval. Pre-construction meeting is scheduled with the City of Monroe Engineering Department (704-282-4515) following approval of the construction plans (civil drawings). Developers, designers or surveyors shall provide a digital copy of the plans in AUTOCAD format at the meeting. Proceed with subdivision construction (refer to construction checklist). In order to record a the final plat, the subdivision improvements must be completed or guaranteed with a ., financial instrument that can be converted into cash. Follow these steps for the option of guaranteeing subdivision improvements in order to apply for building permits: _ Submit complete Subdivision Bond Estimate form to the Department of Planning m1d Development (this form will be reviewed by the Engineering Department, and the Water Resources Department to determine the costs of project completion). _ Receive a letter from the Department of Planning and Development stating the amount for which a letter of credit or other acceptable financial guarantee must be submitted (110% of the estimated cost of improvements). e Submit letter of credit or other acceptable financial guarantee to the Department of Planning and Development for review. 07-4 Permits, Checklists, and Forms Division 07 e e e e e CITY OF MONROE STANDARD SPEClFICATIONS AND DETAIL MANUAL _ Submit Final Plat to the Department of Plmming and Development (5 blue-line copies) for review. (This can be submitted along with the completed bond estimate form). Plat is then routed to all applicable departments and reviewed by the Planning Department. _ After all comments are returned, submit revised final plat for review if necessary. _ Submit copies of the final plat to be recorded (3 or 4 mylars) along with the appropriate subdivision and recording fees to the Department of Planning and Development. (See City of Monroe Fee Schedule for subdivision fees) The Union County Register of Deeds requires 2 copies, and The City of Monroe requires 1 copy of the final plat. The procedure to record the plat is asfollows: >- Planner reviews mylar copies to make sure all corrections were made, and all appropriate signatures were included. Plat is signed by the City of Monroe Subdivision Administrator. Plat is signed by the Union County Review Officer. Plat is recorded at the Union County Register of Deeds office. \.. Y y \, ,. Provide a digital copy of plat to the City of Monroe Engineering Department for roadway updates. (This should be submitted at the same time as the mylars) 07-5 Permits, Checklists, and Forms Division 07 e e THIS PAGE IS INTENTIONALLY LEFT BLANK e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 07.03 SUBDIVISION PLAT CHECKLIST e City of Monroe SUBDIVISION PLAT CHECKLIST Name of Subdivision I Date: Name of Subdivider I Contact Phone No: Name of Preparer 1: -0 OJ ~ >. I rn ... C .- E.s 0> ;::I 0 1::: ~ t:: C" ~ OJ '" I .- CII ..c: c.."'C: c:: ·u CII tJ ",.s c: c:êw ... ;::I o 0> CO '*!: co Q) c: - E CII'- ..I<: C. U >. UJ a.. Item Description l.L.C/) OJ ::E ~ II II ~ ~ II II ... Uwa.. l.L.C/) c.. 0 TITLE BLOCK INFORMATION 1 Title Block is shown containing: P A. Name of development S,P,F P B. Name of map or plan (sketch plan, preliminary plan, or Final Plat) S,P,F P C. Owner's name with address and daytime phone number S,P,F P D. Location, including address, city, township, county. & state, S,P,F P E. Date(s) map(s) prepared or revised S'p,F P F. Scale of drawing in feet per inch - drawinQ scale shall not be less than ,1" equals 200' S,P,F P G. Name, address, and telephone number of preparer of map S,P,F P H. Developer's name, address and daytime phone number, if different from owner's) S,P,F ZONING AND LAND USES P 2 Zoning district(s) within the property and adjacent properties are shown S,P,F P 3 Existing land uses within the property and adjacent properties are noted S,P P 4 Dimensions, location, and use of all existing buildings; distances between buildings S,P,F measured at the closest point; distance from buildings to dosest property lines; buildings to remain on tinal plat STREETS e 5 Street data is shown illustratinQ: P A. Existing and proposed rights-ot-way within and adjacent to property are shown S,P,F P 1. Total right-at-way width dimensions are shown S,P,F E 2. Right-of-way width dimension from centerline at existing public streets are shown P,F P 3. Cul-de-sac right.of-way radius trom centerpoint are shown S,P P B. Pavement or curb lines are shown P P C. Pavement width dimensions are shown P P D. Cul-de-sac pavement radius from centerpoint are shown P E 6 All existing streets and proposed streets are named and approved by E-911 F P MAP INFORMA TION AND DESCRIPTION P 7 Bar Graph Scale is shown S,P,F P 8 (Deed or Record) Book or Plat (Book or Cabinet) references to subject property P,F P 9 Names at adjoining property owners (or subdivisions or developments ot records with Plat P,F . (Book or Cabinet) andlor (Deed or Record) Book reference] are shown P 10 Tax block and parcel(s) number(s) are shown S,P,F P 11 A vicinity map, at a scale of 1" = 2000', is shown S,P,F P 12 All jurisdiction lines which adjoin or cross the tract are shown S,P,F P 13 North arrow and orientation (oriented towards top ot map where practicable) S,P,F 07-6 Permits, Checklists, and Forms Division 07 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 1: 'C Q ~ >- <»01 ... C .- E.!: 0) :J 0 t .... c: CT f! ( ) co:I CI.>._ Q ..r::: '" c. CI.> c: a:: -0 e ::> CI.>.!: c: c:êiV CI C> C1J 'It n¡ ( ) c: - E 4>ü:t5 0. 0 >. UJ c.. Item Description ~ II II e !E =: " II ª UL.LJc.. L.l.CI) c.. 0 14 Boundaries of the tract to be subdivided are shown as follows: E A. At least one corner is tied to: (1) N.C. Grid and provide grid coordinates where at least F one of two control monuments needed are within 2000' of the boundary and show the grid factor or (2) tie to the nearest street intersection P B. All locations of intersecting boundary lines of adjoining properties are shown P,F P C. Distinctly and accurately represent and show all distances; show bearings and S,P,F distances on final; show bearings and distances and curve data on outside boundaries and street centerlines on preliminary with street centerline tied to boundary P 15 Location and descriptions of all monuments, markers, and control corners is shown on plat F P 16 Existing "old" property lines on tract to be subdivided are shown as dashed lines and are S,P,F labeled as "old property lines" P 17 Existing and proposed topography of tract and 100 feet beyond property showing existing P contour intervals of no greater than 5 feet (2 feet where available) and labeling at least two contours per map and all others at 10 foot intervals from sea level ENVIRONMENTAL AND NA TURAL FEATURES P 18 Existing and proposed topography of tract P P 19 Marshes, swamps, and other wetlands are shown S,P,F P 20 Water courses, ponds, lakes, and streams are shown S,P,F P 21 Undisturbed, vegetative buffers along perennial streams are shown S'p,F P 22 Railroad lines and rights-of-way are shown S,P,F P 23 Areas to be dedicated or reserved for public use are shown S,P,F P 24 The name and location of any property or building on the National Register of Historic P,F Places or locally designated historic property is shown P 25 Areas designated as a common area or open space under control of a Developer's or S,P,F Homeowner's Association are shown FLOOD IMPACT AREAS P,E 26 The location of floodway and floodway fringe areas (where applicable) are shown P,F referenced from FEMA Flood Hazard Boundary Maps and/or approved Engineering Flood studies SiTE DATA 27 Site calculations are shown including: P A. Acreage in total tract S,P,F P B. Acreage in pUblic greenways and other open space P,F P C. Total number of lots proposed S,P,F P D. Linear feet in streets P,F P E. Area in newly dedicated right-of-way P,F P F. General location of the boundaries of any residual lot (> 10 acres) S,P .P 28 Proposed lot lines and dimensions, with bearing and distances shown S'p,F P 29 Area in square footage of all proposed lots under one (1) acre in size; area in acres is P,F shown for all lots one acre or more in size; smallest lot is indicated P 30 Lots shown are sequenced or numbered consecutively P,F EASEMENT AND UTILITIES P 31 Location, dimension, and type of all easements (existin~ and proposed) are shown P,F E 32 General Public Utility Easements are tied to the property lines P,F E 33 Public Storm Drainage Easements are shown centered over the creeks, ditches, andlor P,F structures. Ties to property lines are not required. P 34 Plat contains a utility layout plan for water, sewer, storm sewer, natural gas, electric, and P cable TV 07-7 Permits, Checklists, and Forms Division 07 e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL I~en " e ~ >- 'S c: E.s 01 0 ~ '- I:: c- VI Q) [æ'1: (1 ..c ... VI a::: -u (1 III'S c: c:ro(jj ... :;J C en (1J =It nI (l) 1:- E (1 '£ .::<: a. u >.\.u a.. Item Description u.U) e æ :=! II II .:ê ~ II II UUHl.. u.VJ c- o NOTES AND STATEMENTS P 35 Plat contains NCDOT Construction Standards Certification (where applicable) P,F P 36 Plat contains an On-Site Water and/or Sewer Note (where applicable) P,F P 37 Plat contains a Special Flood Hazard Area Note P,F P 38 Plat contains a Register of Deeds Certificate F P 39 Plat contains a Notary Certificate of Owners Signature F P 40 Plat contains a Certificate of Ownership and Dedication F P 41 Plat contains a Subdivision Administrator Approval Certificate F E 42 Plat contains a Certification of Swvey and Accuracy F E 43 Plat contains a Union County Review Officer's Statement F E 44 Plat contains Storm Drainage Note (where applicable) P,F NOTE: This checklist is intended for the use of the public in order to comply with the City of Monroe Subdivision mapping standards. Specifics are addressed in the City of Monroe subdivision Ordinance. e e e 07-8 Permits, Checklists, and Forms Division 07 e e THIS PAGE IS INTENTIONALLY LEFT BLANK e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 07.04 STORM WATER CONTROL STRUCTURE OPERATION AND MAINTENANCE PLAN TI-IIS FORM IS A COpy FOR REFERENCE ONLY. FOR ACTUAL AGREEMENT, CONTACT THE PLANNING DEPARTMENT NORTH CAROLINA UNION COUNTY THE CITY OF MONROE, NORTH CAROLINA STORMWATER CONTROL STRUCTURE OPERATION AND e MAINTENANCE PLAN AGREEMENT e e e Record Owner(s): Property Location: Tax Map & Parcel #: Acreage: Deed Reference: BOOK BOOK , PAGE , PAGI~ Approval Date of Stormwater Control Structure Design: Responsible Party: Address of Responsible Party: SECTION 1. At a minimum, the following items shall be inspected or performed monthly or after every runoff producing rainfall event, whichever comes first: A. Remove debris from the trash rack; and B. Check and clear the orifice of any obstructions. If a pump is used as the drawdown mechanism, check for pump operation; and C. Check the pond side slopes; remove trash and repair eroded areas before the next rainfall event; and D. If the pond is operated with a vegetated filter, check the filter for sediment accumulation, erosion and proper operation of the flow spreader mechanism, and repair as necessary. SECTION 2. At a minimum, the following items shall be inspected or performed quarterly: A. The collection system shall be inspected i.e., catch basins, piping, and grass swales for proper functioning; and B. Accumulated trash shall be removed from basin grates and basin bottoms and piping shall be checked for obstructions; and C. Pond inlet pipes shall be checked for undercutting, riprap shall be replaced, and broken pipes shall be repaired; and D. Grassed swales, including the vegetated filter, if applicable shall be reseeded twice a year as necessary. Eroded areas shall be repaired immediately. SECTION 3. At a minimum, the following items shall be inspected or performed every six months: A. Accumulated sediments shall be removed from the bottom of the stormwater control structure; and B. The pond depth shall be checked at various points in the pond. If the depth is reduced to 75% of the original depth at any point, sediment shall be removed to at least original design depth; and 07-9 Permits, Checklists, and Forms Division 07 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL SECTION 4. General Storm water Control Structure Requirements A. The side slopes, not including the normally submerged vegetated shelf, shall be mowed according to the season, and the maximum height shall not be more than 6 inches; and e B. Cattails and other indigenous wetland plants are encouraged along the pond perimeter; however they shall be removed when they cover the surface area of the pond; and C. The orifice is designed to draw down the storage for the I-inch storm in 2-5 days. If draw down is not accomplished in that time, the system may be clogged. The source of the clogging shall be found and eliminated immediately; and D. No trees or shrubs shall be permitted on the pond dam or in critical areas that may cause pond or piping failures; and E. A II components of the storm water control structure shall be kept in good working order. SECTION 5. Failure to Maintain Stormwater BMP A. In the event the Owner, its successors and assigns, fails to maintain the stormwater management/BMP facilities in good working condition acceptable to the City, the City may enter upon the Property and take whatever steps necessary to correct deficiencies identified in the inspection report and to charge the costs of such repairs to the Owner, its successors and assigns. This provision shall not be construed to allow the City to erect any structure of permanent nature on the land of the Owner outside of the easement for the stormwater management/BMP facilities. It is expressly understood and agreed that the City is under no obligation to routinely maintain or repair said facilities, and in no event shall this Agreement be construed to impose any such obligation on the City. B. In the event the City pursuant to this Agreement, perfonns work of any nature or expends any funds in perfonnance of said work for labor, use of equipment, supplies, materials, and the like, the Owner, its successors and assigns, shall reimburse the City upon demand, within thirty (30) days of receipt thereof for all actual costs incurred by the City hereunder. e SECTION 6. Facility Maintenance e The Owner, its successors and assigns, will perform the work necessary to keep these facilities in good working order as appropriate. In the event a maintenance schedule for the storm water managementlBMP facilities (including sediment removal) is outlined on the approved plans, which are incorporated herein by reference, the schedule will be followed. All safety measures shall be maintained and repaired in a manner to protect the public hea1th and safety. SECTION 7. Liability Disclaimer This Agreement imposes no liability of any kind whatsoever on the City, and the Owner agrees to hold the City harmless from any liability in the event the stormwater management/BMP facilities fail to operate properly or safety measures are improperly designed, constructed, or maintained. e SECTION 8. Right of Entry The Owner, its successors and assigns, hereby grant permission to the City, its authorized agents and employees, to enter upon the Property and to inspect the storm water management/BMP facilities whenever the City deems necessary. The City shall provide the Owner, its successors and assigns, copies of the inspection findings and a directive to commence with the repairs if necessary. SECTION 9. Agreement Rccordation This Agreement shall be recorded among the land records of Union County, North Carolina and shall constitute a e covenant running with the land, and shall be binding on the Owner, its administrators, executors, assigns, heirs, and any other successors in interests, including any homeowners association. ---.................................---............-..-- - ---.......................-...... .......- 07 -10 Permits, Checklists, and Forms Division 07 e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL I, , owner(s) do hereby acknowledge receipt of this stormwater control structure maintenance and operation agreement. The undersigned owner(s) do further acknowledge that no work may be done pursuant to this permit except in accordance with all of its conditions and requirements and that this restriction shall be binding upon them and their successors in interest and shall run with the land in perpetuity. Owner NORTH CAROLINA COUNTY , a Notary Public, do hereby certify that , owner(s) personally appeared before me this day and acknowledged the due execution of the foregoing instrument. I, WITNESS my Hand and Official Seal, this the ~ day of , 200 I. (SEAL) Notary Public My Commission Expires: WITNESS my Hand and Official Seal, this the ~ day of ,20_ -------...-............--..........----.............--.........----........---------- The foregoing Certitïcate(s) of is/are certified to be correct. This instrument and this certificate are duly registered at the date and time in the Book and Page shown on the first page hereof. REGISTER OF DEEDS FOR UNION COUNTY By Deputy/Assistant-Register of Deeds 07 -11 Permits, Checklists, and Fonns Di vision 07 e e THISP AGE IS INTENTIONALLY LEFT BLANK e e e e e e e e CITY OF MONROE STANDARD SPECIFiCATIONS AND DETAIL MANUAL 07.05 PRE-CONSTRUCTION MEETING AGENDA The follqwing items will be discussed at all Pre-Construction meetings for proposed developments. Refer to Standard 01.05.00 regarding the Pre-Construction Conferences. This agenda shall be modified to suit site conditions for each proposed development and distributed at the meeting. AGENDA PRE-CONSTRUCTION CONFERENCE DEVELOPMENT NAME TIME; DATE LOCATION I. Introduction of Attendees II. Emergency Contacts III. Erosion Control IV. Clearing & Grubbing V. Undercuts & Embankments VI. Storm Drains & On- and Off-Site Drainage VII. Curb VIII. Subgrade IX. Stone Base X. Asphalt Base & Asphalt Surface XI. Shoulders XII. Landscaping XIII. Utilities within Proposed Street Right-of-Way XIV. Checklists and Certification Forms XV. Safety XVI. Inspections by City & Developer XVII. Final Inspection XVIII. Other 07-12 Permits, Checklists, and Forms Division 07 e e THIS PAGE IS INTENTIONALLY LEFT BLANK e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 07.06 EROSION CONTROL FORMS AND CHECKLISTS 07.06.01 EROSION CONTROL FINANCIAL RESPONSIBILITY FORM e No person may initiate any land-disturbing activity as defined in XXX of the Monroe City Code prior to completion of this form, and an applicable and acceptable erosion and sedimentation control plan has been approved by the City of Monroe Engineering Department. (Please type or print) Part I I. Name of Project 2. Address where land disturbing activity will take place e 3. 4. 5. 6. Approximate date disturbing activity will commence Purpose of development (residential, commercial, industrial, etc.) Total acreage of land to be disturbed or uncovered Amount of fee enclosed (fee will be the amount of current policies per acre multiplied by the total number of acres or any part of an acre from number 5. i.e. 7.28 acres equals 8 acres.) 7. Agent to contact should sediment control issues arise during land disturbing activity e Name Phone 8. Landowner(s) of Record (use blank page to list additional owners) Name Name Mailing Address Mailing Address Street Address Street, Address e Phone Phone Fax Fax 9. Indicate Book and Page where deed of the property where land disturbing activity will take place is recorded (use blank page to list additional owners) Book Book Page Page e 10. Tax Map Parcel Number where land disturbing activity will take place 07 -13 Permits, Checklists, and Forms Division 07 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL P art II 1. Pcrson(s) or firm(s) who are financially responsible for this land disturbing activity (use blank page to list additional owners) Name Name Mailing Address Mailing Address Street Address Street Address Phone Phone Fax Fax 2. If the Financially Responsible Party is not a residentofN0J1h Carolina, give name and address ofa North Carolina Agent Name of Registered Agent Mailing Address Street Address Phone Fax 3. The above information is true and correct to the best of my knowledge and belief and was provided by me under oath. I agree to provide corrected information should there be any change in the information provided herein. (This form must be signed by the financially responsible person if an individual or his attorney in fact, or if not an individual, by an officer, director, partner, or registered agent with authority to execute instruments for the financially responsible person) Type or Print Name Title Signature Date I, , a Notary Public of the County of , State of N0I1h Carolina, hereby cel1ify that acknowledged that the above form was executed by him. appeared personally before me this day and being duly sworn Witness my hand and notarial seal, this day of SEAL (Notary) 07 -14 My commission expires Permits, Checklists, and Forms Division 07 e e e e . e e e e . CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 07.06.02 EROSION CONTROL PLAN CHECKLIST This Erosion Control Plan Checklist shall accompany all plan submittals or the submittal shall be considered incomplete. Show a north arrow. Show a vicinity map. The minimum scale is 1" = 50'. Show all property lines and right-of-ways. Show a legend. Show existing and proposed contours. Show the limit of the acreage to be disturbed. Show planned and existing buildings locations and FFE. Show planned and existing roads locations, elevations and profiles. Show lot and/or building numbers. Show seeps, springs, or wetland limits. Show all easement lines. Show boundaries of the total tract of land where disturbing activity will take place. Show borrow, waste areas, and stockpiled topsoil or subsoil locations. Show existing and planned drainage patterns including off-site areas that drain through the project area. Indicate the acreage of drainage areas above drainage structures. Show the size and location of existing and proposed storm culverts and sewers. Show soil type and special characteristics. Show design calculations for peak discharges of runoff. Show design calculations and construction details for storn1 culverts and sewers. Show design calculations, cross-sections and method of stabilization of existing and planned channels. 07 -15 Permits, Checklists, and F onns Division 07 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL Show design and construction details of energy dissipaters below storm culverts and sewers including the size of stone used for rip rap. Show design calculations and construction details to control groundwater. Show the name of the first watercourse into which storm water leaving the site is tributary. Show the location of all temporary and permanent erosion and sedimentation control measures. Construction detail drawings for all temporary and permanent erosion and sedimentation control measures. Show all design calculations for sediment basins and sediment traps. Show maintenance requirements of temporary erosion and sedimentation control measures during construction. Indicate the name of the person who ,is responsible for maintenance of temporary measures during construction. Show maintenance requirements of permanent erosion and sedimentation control measures following construction. Indicate the name of the person who is responsible for maintenance of permanent measures following construction. Show all areas and acreage to be vegetatively stabilized. Show planned vegetation with details of plants, seed, mulch, and fertilizer. Show specifications for permanent and temporary vegetation. Indicate the specified method of soil preparation. Attach the Financial Responsibility Fom1 from Standard 07.07.01 of the City of Monroe Standard Specifications and Detail Manual. Attach bid specifications regarding erosion and sedimentation control measures. The following notes will be included on all plan sets: 1. Ground cover on exposed slopes shall be applied within 15 working days following completion of any phase of grading. 2. Permanent ground cover for all disturbed areas shall be applied within 15 working days or 90 calendar days, whichever is sooner. 07-16 Permits, Checklists, and Forms Division 07 e e e e . e e e e . CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 3. No land disturbing activity, except that which is required to install erosion control measures, may commence prior to approval by the Engineering Director of Certification Form 1-01. 4. Additional erosion control measures may be required based upon specifìc site conditions. 07-17 Permits, Checklists, and Forms Division 07 e e THIS PAGE IS INTENTIONALLY LEFT BLANK e e . e e e e . CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 07.07 DRIVEWAY PERMIT Property Owner! Lessee: Property Address: City, State & Zip code: Driveway location by address: Type of usage: (Select one) Residential Business Industrial Driveway is located on the side of (Direction N, E, S, W) feet of the centerline of (distance) (Direction N,E,S,W) (Street Name) (Street Name) (Sketch driveway plan of back or attach sketch plan to perm it. For multiple driveways attach sketch plan to permit.) Driveways are to be paved in accordance with Chapter 156.125(E) (6) of the City of Monroe Codc of Ordinances. Driveway width: Type of driveway pavement: Asphalt (Select one) Concrete Type of Approach: (Selcct one) Concrete ramp with no pipe. Concrete ramp with Reinforced Concrete Pipe. (12" minimum size) City Standard Concrete ramp through curb and gutter section. Asphalt ramp with no pipe. Asphalt ramp with Reinforce Concrete Pipe. (12" minimum size) Street type entrance for shopping centers only. Existing Sidewalk? Yes (Select one) No Approved by: Engineering Department 07-18 Date Permits, Checklists, and Forms Division 07 e e THIS PAGE IS INTENTIONALLY LEFT BLANK e e e e . e e . CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 07.08 CERTIFICA TION FORMS 1. The following forms shall be utilized 111 accordance with Standards 07.05.00 and 07.06.00. 2. Table 07-01 gives a description of the following Certification Forms contained in this document. Table 07-01 Certification Description Notarization No. Required 1-01 Primary Erosion Control Inspection Form No 1-02 Intermittent Subdivision Construction Form Yes 1-03 Final Subdivision Construction Form Yes 1-04 Final Watershed Pond Construction Form Yes 1-05 Re-Inspection Form No 1-06 Final Erosion Control Acceptance Form No 3. No construction activities other than installation of erosion control measures shall begin prior to the Engineering Director's approval of Certification Form 1-01. 4. The Developer or his contractor Shall not remove any Temporary Erosion Control Measure prior to approval of Certification Form 1-05 by the Engineering Director. 07 -19 Permits, Checklists, and Forms Division 07 e e THIS PAGE IS INTENTIONALLY LEFT BLANK e e . CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL CITY OF MONROE e Certification FaDn 1-01 Primary Erosion Control Inspection Form Project Name Date Developer Contractor e 1. The City of Monroe Erosion Control Permit Number for this project is 2. All approved erosion control measures have been installed per approved plans. 3. I understand that any failure to maintain these erosion control measures will result in appropriate enforcement actions in accordance with the City of Monroe Erosion and Sedimentation Control Ordinance, the North Carolina Sedimentation Pollution Control Act of 1973 (NCGS Chapter 113A, Article 4), and the North Carolina Administrative Code Title ISA, Department of Environl11ental and Natural Resources Chapter 4. 4. Additional erosion control measures may be required based upon specific site conditions. e 1, of (Responsible Agent) (Development Company) hereby certify that the information contained herein is true and correct to the best of my knowledge and belief and was provided by me under oath. (Developer Agent Signature) (Date) (Contractor Agent Signature) (Date) (Project Engineer Signature) (Date) e ACCEPTANCE BY CITY OF MONROE: (Construction Inspector Signature) (Date) (Engineering Director Signature) (Date) e 07-20 Permits, Checklists, and FOffi1S Division 07 e e THIS PAGE IS INTENTIONALLY LEFT BLANK e e . CITY OF MONROE ST ANDARD SPECIFICATIONS AND DETAIL MANUAL CITY OF MONROE e Certification Fonn 1-02 e e e e Intermittent Subdivision Construction Form Project Name Date Developer Contractor I. 2. All approved rough grading operations have been completed per approved plans. All approved sanitary sewer system components have been installed per approved plans and in accordance with the City of Monroe Standard Specifications and Detail Manual. All approved storm drainage system components have been installed per approved plans. and all construction was completed in accordancc with the City of Monroe Standard Specitications and Detail Manual. All curb has been installed, each section of curb was backfilled within 3 to 5 days of placement. and all construction was complcted in accordance with the City of Monroe Standard Specifications and Detail Manual. All approved water line system components have been installed per approved plans, and all work has been completed in accordancc with the City of Monroe Standard Specifications and Detail Manual. Attached are all previous geotechnical reports for roadway till material. The City of Monroe Energy Services Department, telephone, and television/cable utility service organizations have been contacted for utility service instal1ation and sleeve/conduit installations for proposed curb crossings. Upon receipt, the City of Monroe Engineering Department will issue costs for street sign installation. 3. 4. 5. 6. 7. 8. I, of (Responsible Agent) (Development Company) hereby certify that the infol1nation contained hercin is true and correct to the best of my knowledge and belief and was provided by me under oath. (Developer Agent Signature) (Date) (Contractor Agent Signature) (Date) (Project Engineer Signature) (Date) I, , a Notary Public of the County of , State of North Carolina. hereby certify that acknowledged that the above form was executcd by him. appeared personally before me this day and being duly sworn Witness my hand and notarial seal, this day of SEAL (Notary) My commission expires ACCEPTANCE BY CITY OF MONROE: (Construction Inspector Signature) (Date) (Engineering Director) (Date) 07 -21 Permits, Checklists, and F onns Division 07 e e THIS PAGE IS INTENTIONALLY LEFT BLANK e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL CITY OF MONROE e Certification F onn 1-03 e e e e Final Subdivision Construction Form Project Name Date Developer Contractor I. The asphalt or stone ba:;e course for this project has been installed, and all construction was completed in accordance with the City of Monroe Standard Specitïcations and Detail Manual. The asphalt roadway surface course for this project has been installed, and all construction was eompletcd in accordance with the City of Monroe Standard Specitïcations and Detail Manual. All sidewalk has been installed, each section of curb was backfillcd within 3 to 5 days of placement, and all construction was completed in accordance with thc City of Monroe Standard Specifications and Design Manual. Attached arc all previous gcotechnical reports tor roadway base All punch list items contained on the Post-Construction Checklist, Standard 07.06,00 are completed. I have read items 1-8 within Standard 07.06.00 and understand that by requesting the tïnal walk-through, the City of Monroe expects that all m~ior items are cOlnpleted to the fullest extent possible. I further understand that any evident misrepresentation will incur a re-inspection fee in the amount of current policies and that no re-inspection will be scheduled until all fees are paid. The completed Post·Construction Checklist is attached to this form. The Concrete Monument Report Form of Standard 07.12.00 has been submitted to the Engineering Department. The 12-month warranty period will initiate upon final acceptance by the City of Monroe. 2. 3. 4. 5. 6. 7. 8. 9. 10. I, of (Responsible Agent) (Development Company) hereby certify that the information contained herein is true and correct to the best of my knowledge and belief and was provided by me under oath. (Developer Agent Signature) (Contractor Agent Signature) (Date) (Date) (Project Engineer Signature) (Date) I, , a Notary Public of the County of , State of North Carolina, hereby eertify that aeknowledged that the above form was exeeutcd by him. appeared personally before me this day and being duly swom Witness my hand and notarial seal, this day of SEAL (Notary) My commission expires ACCEPTANCE BY CITY OF MONROE: (Construction Inspector Signature) (Engineering Director) (Date) (Date) 07-22 Pemlits, Checklists, and Forms Division 07 e e THIS PAGE IS INTENTIONALLY LEFT BLANK e e e e 1. e 2. 3. 4. 5. e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL CITY OF MONROE Certification F onn 1-04 Final Watershed Pond Construction Form Project Name Date Developer Contractor All pond construction is completed. A City of Monroe Stormwater Control Structure Operation and Maintenance Plan Agreement has been filed with the Planning and Zoning Department. A copy of the Commercial Site Post-Construction Checklist for Retention and Detention Ponds is attached and all items have been verified and checked. I have read items 1-6 within Standard 07.10.00 and understand that by requesting the final walk-through, the City of Monroe expects that all major items are completed to the fullest extent. I further understand that any evident misrepresentation on the Checklist will incur a re-inspection fee in the amount of current policies and that no re-inspection will be scheduled until all fees are paid. I, of (Responsible Agent) (Development Company) hereby certify that the information contained herein is true and correct to the best of my knowledge and belief and was provided by me under oath. (Developer Agent Signature) (Date) . (Contractor Agent Signature) (Date) (Project Engineer Signature) (Date) I, , a Notary Public of the County of , State of North Carolina, hereby certify that acknowledged that the above form was executed by him. appeared personally before me this day and being duly sworn Witness my hand and notarial seal, this day of SEAL (Notary) My commission expires ACCEPTANCE BY CITY OF MONROE: (Construction Inspector Signature) (Date) (Engineering Dircctol') (Date) 07-23 Permits, Checklists, and Fom1s Division 07 e e THIS PAGE IS INTENTIONALLY LEFT BLANK e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL CITY OF MONROE e Certification FOnTI 1-05 Re-Inspection Form Project Name Date Developer Contractor e 1. On to be incomplete: (Date) a final walk-through was performed and the following items were found To be completed bv Construction Inspector e 2. All items listed above are now completed. 3. All reinspection fees have been paid in full and a receipt is attached. e L ~ (Responsible Agent) (Development Company) hereby certify that the information contained herein is true and currect to the best ormy knowledge and belief and was provided by me under oath. (Developer Agent Signature) (Date) (Contractor Agent Signature) (Date) (Project Engineer Signature) (Date) ACCEPTANCE BY CITY OF MONROE: e (Construction Inspector Signature) (Date) (Engineering Director) (Date) 07-24 Permits, Checklists, and Forms Division 07 e e THIS PAGE IS INTENTIONALLY LEFT BLANK e e e e e e e e CITY OF MONROE STANDARD SPECIFICATlONS AND DETAIL MANUAL CITY OF MONROE Certification F onn 1-06 Final Erosion Control Acceptance Form Project Name Date Developer Contractor 1. The City of Monroe Erosion Control Number for this project is 2. This project and all associated construction activities are completed. 3. Certitication Form 1-03 or 1-04 has been approved by the Engineering Director and Certification Form 1- 05 (if needed) has been approved by the Engineering Director. I, of (Responsible Agent) (Development Company) hereby certify that the information contained herein is true and correct to the best of my knowledge and belief and was provided by me under oath. (Developer Agent Signature) (Date) (Contractor Agent Signature) (Date) (Project (Engineer Signature) (Date) ACCI<:I'TANCE BY CITY 0.1' MONROE: (Erosion Control Officer Signature) (Date) (Engineering Director) (Date) 07-25 Permits, Checklists, and FOffilS Division 07 e e THIS PAGE IS INTENTIONALLY LEFT BLANK e e . e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 07.09 CONSTRUCTION CHECKLIST All plan approvals required for this development must be completed and authorization received from the Subdivision Administrator to proceed prior to the start of construction. Install temporary erosion control devices per Erosion Control Certificate of Approval and approved plans. No land disturbing activity, except that which is required to install erosion control measures, may commence prior to approval by the Engineering Director of Certification Form 1-01. Contact the Construction Inspector within 48 hours following installation of erosion control devices to schedule primary erosion control inspection. Submit completed Certification Form 1-01 to the Construction Inspector. Clear and grub proposed rights-of-way induding a lO-foot wide utility easement on both sides and/or to the proposed tie and toe of slopes, whichever is greater. Perform rough grading operations. Install all proposed sanitary sewer system components per approved plans. Construction Inspector will schedule manhole vacuum tests, line pressure tests, and applicable mandrel tests within approximately 30 days following installation. Install storm drainage system pipes, ditches, swales, and structures per approved plans. Contact Construction Inspector following storm drainage installation to schedule a visual inspection of the constructed system. Prior to curb and gutter installation, contact the City of Monroe Energy Services Department, telephone, and cable for utility service installation and for locations to plåce sleeves/conduit under the proposed curb line. Grade for curb installation. Contact Construction Inspector 24 hours in advance to schedule a proof roll for curb. Install curb per approved plans. Each section of curb shall be backfilled within 3 to 5 days following placement. Install water line system components per approved plans The Developer and/or his Agent shall contact the Construction Inspector 24 hours in advance to schedule water line pressure tests. Water line pressure tests must be completed prior to paving operations. 07-26 Permits, Checklists, and Forms Division 07 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL Fine grade shoulders per approved plans. Grade roadway section for subgrade. Contact construction inspector 24 hours in advance to schedule a proof roll for roadway subgrade. Submit completed and notarized Certification Form 1-02 to Construction Inspector. Certification has provisions for sanitary sewer, storm drainage, water system, curb installation, and contacting utilities outside the contractor's scope of work. Submit all previous geotechnical reports with Certification Form 1-02. Install stone or asphalt roadway base per approved plans. Contact the Construction Inspector to schedule a proof roll for the constructed roadway base material. Water line testing must be completed prior to paving operation. Install asphalt roadway pavement per approved plans. Submit docUmentation on tests performed on the pavement to the Construction Inspector. Contact the City of Monroe Engineering Department for the cost and to schedule the installation of street signs. All underground utilities and service taps must be installed prior to installation of concrete sidewalk. Install concrete sidewalk þer approved plans. Perform all fine grading, landscaping, and installation of street trees (if applicable). Break off pipes flush with the wall of all sanitary and storm sewer structures, and grout and trowel smooth the inside walls. AFTER ALL ITEMS HAVE BEEN CHECKED, REFER TO STANDARD 07.11 07-27 Permits, Checklists, and Forms Division 07 e e e e e e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 07.10 FINAL INSPECTION AND ACCEPTANCE OF SUBDIVISION CONSTRUCTION 1. No final inspection shall be scheduled until Certification 1-03 is approved by the Engineering Director. 2. The Developer, his Agent and the Contractor are responsible for utilizing the Post-Construction Checklist to generate the punch list for this project. The City of Monroe will not generate a punch list for any item contained in this document. The City of Monroe may however generate a punch list for items not contained in this document. 3. Any item checked on the Post-Construction Checklist that is found during the walk-through to be an evident misrepresentation shall incur a re- inspection fee in the amount of current policies per each occurrence. 4. The City of Monroe will not accept the street right-of-ways for maintenance until every item on the Post-Construction' Checklist and any punch list item is completed to the Construction Inspector's satisfaction, and all outstanding balances have been paid in full. 5. The Developer must submit the As-Built Drawings as required in Standard 01.10, and the City of Monroe must approve the drawings prior to acceptance of the street right-of-ways for maintenance by the City. 07-28 Permits, Checklists, and Forms Division 07 e e THIS PAGE IS INTENTIONALLY LEFT BLANK .- e e e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 07.11 POST-CONSTRUCTION CHECKLIST All necessary erosion control measures are in place, sediment basins are clean and in working order. Streets, curb and gutter, and sidewalks are clear of debris and dirt. All storm drain lines are in proper alignment and have straight and positive grade. All storm drain lines are free of dirt, rocks, and debris. All pipes are cut flush with the inside wall of catch basins and other drainage structures. All inside walls of drainage structures are grouted and troweled smooth. All steps in drainage structures are in place (if needed). All catch basins have the proper throat area as designed. All inverts of drainage structures are sloped toward the outlet pipe. All grates are the proper type for the slope (type "E", "F", or "G"). All double boxes have either a steel I-beam or two 4" X 4" X 3/8" angle irons supporting the middle of the frames & grates. All ditches have proper grade and side slopes for positive drainage. All ditches have proper penl1anent erosion control measures in place. All offsite drainage maintains positive flow from the proposed subdivision to adjacent properties. All curb & ,gutter has proper alignment and grades specified by the approved plans. Any ponding in the flow line of the gutter is within tolerances per Standard 02.03.06. All accessibility ramps and sidewalks are constructed in accordance with the Americans with Disabilities Act current specifications. All roadway sections are constructed with proper cross-sectional slope. There is no prolonged ponding in roadway areas. All manholes, valves, and grates are set flush with pavement and follow the grade ofthe street. All sidewalks are placed at proper alignment and grade. 07-29 Permits, Checklists, and Forms Division 07 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL Asphalt pavement is free of subgrade failure (settlement), and free of failures in the asphalt (cracking). Any asphalt surface repairs are within tolerances per Standard 02.03.06. All broken and cracked curb, sidewalk, accessibility ramps, are within tolerances per Standard 02.03.06. All shoulders are compacted and graded per the typical sections. The shoulders are graded to proper slope, seeded, mulched, and free of large rocks and debris to the back of the utility easement. The right-of-way is clear of all obstructions other than those permitted by existing policies. Concrete monuments are placed per Standard 01.11.00 and Detail 07.03.01. 1. This Checklist shall be considered the Punch List for the proposed subdivision development. 2. The City of Monroe does not generate a Punch List for the items contained within this Checklist. 3. The City of Monroe may generate a Punch List for items not listed on this Checklist. 4. The Developer and his Contractor shall have full quality control of the development, which includes these Punch List items. 5. After all items have been checked, submit completed and notarized Certification Form 1-03 to the construction inspector to schedule a final walk-through. 6. Any item checked that is found during the final walk-through to be an evident misrepresentation shall incur a reinspection fee in the amount of current policies per each occurrence. 7. In the event a reinspection is required, submit Certification Form 1-04 to the Construction Inspector. A reinspection will not be scheduled until the required fees are paid in full. 8. After the City has approved all checked items in this standard and any punch list items that may have been generated, submit Certification Form 1-05 to the Construction Inspector for authorization to remove all Temporary Erosion Control Measures. 07-30 Permits, Checklists, and Forms Division 07 e e e e e .e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 07.12 WATERSHED POST-CONSTRUCTION CHECKLIST FOR RETENTION AND DETENTION PONDS Pond, barrel, riser, and emergency spillway are all free of debris, trash, and other obstructions. Pond, barrel, riser, and emergency spillway are free of holes, leaks, and slides. All bare earth areas have been properly stabilized. All forebay areas are free of sediment (if applicable). The pond is at the permanent pool elevation and functioning without leakage through the outlet structure or impoundment (if applicable). All disturbed areas within the immediate vicinity of the pond have been properly stabilized. All horizontal alignments and vertical elevations are in accordance with the approved plans. Pipe ends have stabilized outlet per approved plans. Sediment within the pond has been removed (if pond has been used as a sediment trap throughout construction). The Certification Letter from the Professional of Record is attached. 1. This Checklist shall be considered the Punch List for the proposed detention/retention pond. 2. The City of Monroe does not generate a Punch List for the items contained within this Checklist. 3. The City of Monroe may generate a Punch List for items not listed on this Checklist. 4. The Developer and his Contractor shall have full quality control of the pond construction, which includes these Punch List items. 5. Any item checked that is found during the final walk-through to be an evident misrepresentation shall incur a reinspection fee in the amount of current policies per each occurrence. 6. In the event a reinspection is required, alI fees are required to be paid by the Developer and verified by the City prior to scheduling the reinspection. 07-31 Permits, Checklists, and Forms Division 07 e e THIS PAGE IS INTENTIONALLY LEFT BLANK e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 07.13 AS-BUlL T DRAWING CHECKLIST e I AS-BUILT INFORMATION Submitted by Phone # CHECK ONE 0 (Please check) Blue Line For Review Only e 0 Mylar or Vellum (Final) Transmittal Date 2. GENERAL AS-BUILT INFORMA nON e e e A. B. C. D. E. F. G. H. I. J. 3. STREETS A. B. C. D. E. F. G. Copy of recorded plat or deed of easements, indicating easements and right of way Boundary of tract by courses and distance with references Tie to N.C. grid coordinate system Vicinity map Scale of drawings and bar scale North arrow Location of benchmark with M.S.L. elevations Seal and signature of North Carolina registered P.E. or P.L.S. that generated as-built drawings on each sheet All easements identified and dimensioned Statement designating drawings are "as-built" on each sheet Horizontal alignment with radii, P.C.'s, and P,T.'s of all curves Vertical alignment with centerline grades, vertical curve lengths and station and elevation of all PV C' sand PVT's and centerline profile Dimensioned right of way and street widths Pavement section Typical cross section Horizontal and vertical sight lines Delineation of landscaping limits and materials PAGE 1 of2 07-32 Permits, Checklists, and Forms Division 07 CITY OF MONROE 4. STORM DRAINAGE STANDARD SPECIFICATIONS AND DETAIL MANUAL A. B. C. D. E. F. G. Outline of 100 year flood plain Pipe material Structure invert and top elevations Pipe diameter Pipe slope and length Size of riprap dissipation pad Statement of stormwater velocity and discharge at all outlets Show permanent stormwater best management practice A separate, recorded easement dedication plat for utility extensions outside right of way Maintenance agreement responsibility statement H. I. J. As-Suilts Reviewed by o Approved o Returned City of Monroe Use Only Date CHECK ONE Date Date PAGE 2 of2 07-33 Permits, Checklists, and Forms Division 07 e e e e . e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 07.14 CONCRETE MONUMENT REPORT FORM Subdivision Name Name of Professional Land Surveyor Registration Number of Land Surveyor Seal of Land Surveyor (SEAL) Number of Concrete Monuments Required for Subdivision Fill in all blanks. If more than 4 Concrete Monuments are required for this subdivision, submit additional information on separate report form. 1. Date of Survey 2. Date of Survey Elevation of Mark (MSL) Elevation of Mark (MSL) Coordinate (US State Plane) Coordinate (US State Plane) N: N: E: E: For Engineering Department Use Only: For Engineering Department Use Only: Assigned Name Assigned Name 3. Date of Survey 4. Date of Survey Elevation of Mark (MSL) Elevation of Mark (MSL) Coordinate (US State Plane) Coordinate (US State Plane) N: N: E: E: For Engineering Department Use Only: For Engineering Department Use Only: Assigned Name Assigned Name 07-34 Permits, Checklists, and Forms Division 07 e e THIS PAGE IS INTENTIONALLY LEFT BLANK e e e e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 07.15 PERMIT TO OPEN CUT UTILITY TRENCHES CITY MAINTAINED STREET RIGHT OF WAY PROJECT: LOCATION: STREET SHEET TOMH MH OF CONTRACT REQUEST TO OPEN CUT IS DUE TO THE FOLLOWING: BY APPLICATION, THE UNDERSIGNED CONTRACTOR AGREES TO ADHERE TO THE SPECIAL PROVISIONS ON THE REVERSE SIDE REQUIRED FOR ALL OPEN CUTS WITHIN CITY MAINTAINED RIGHT OF WAY. SIGNATURE OF CONTRACTOR NAME OF CONTRACTOR: ADDRESS: CONTACT PERSON: PHONE NO.: RECOMMENDED BY PROJECT INSPECTOR: DATE: ENGINEERING DEPARTMENT APPROVAL BY: DATE: FINAL ACCEPTANCE OF WORK FINAL INSPECTION REQUESTED BY CONTRACTOR ON DATE: ACCEPTED BY PROJECT INSPECTOR BY: DATE: ACCEPTED BY ENGINEERING DEPARTMENT BY: DATE: C: UTILITY DIRECTOR CONTRACTOR PROJECT ENGINEER 07-35 Permits, Checklists, and Forms Division 07 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL PERMIT TO OPEN CUT UTILITY TRENCHES SPECIAL PROVISIONS 1. CONTACT THE ENGINEERING DEPÀRTMENT AT 704-282-4515, AT LEAST 24 HOURS PRIOR TO CONSTRUCTION. THE ENGINEERING DEPARTMENT MUST BE NOTIFIED IN WRITING UPON COMPLETION SO AN INSPECTION CAN BE MADE. 2. THE MONROE POLICE AND FIRE DEPARTMENTS SHALL BE NOTIFIED 24 HOURS IN ADVANCE OF OPEN CUTTING BY THE CONTRACTOR. 3. TRAFFIC SHALL BE MAINTAINED THROUGH THE WORK AREA AT ALL TIMES. ONLY ONE LANE MAY BE CLOSED AT ANY GIVEN TIME UNLESS OTHERWISE APPROVED. 4. PROPER TRAFFIC CONTROL DEVICES, SIGNS, ETe. IN ACCORDANCE WITH THE MANUAL ON UNIFORM TRAFFIC CONTROL DEVICES SHALL BE INSTALLED TO INSURE PUBLIC SAFETY. 5. ALL MATERIALS AND WORKMANSHIP SHALL CONFORM TO THE CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL. TRENCH BACKFILL MATERIAL SHALL MEET NCDOT MATERIAL REQUIREMENTS. 6. THE AREA DISTURBED AT EACH SITE SHALL BE LEFT IN A NEAT AND SATISFACTORY CONDITION. 7. NO TRENCHES ARE TO BE OPEN OVERNIGHT. 8. CONTRACTOR IS RESPONSIBLE FOR PROVIDING ADEQUATE SHORING IN ALL TRENCHES TO PREVENT COLLAPSE DURING CONSTRUCTION. 9. MANHOLES WILL BE ADJUSTED TO CORRECT ELEVATION MAKING THEM LEVEL WITH EXISTING GROUND. 10. OPEN CUT IS TO BE PATCHED WITH: 2" TYPE "I-I" ASPHALT SURFACE COURSE 6" TYPE "HB" ASPHALT BASE COURSE 11. PATCHING IS TO BE PERFORMED THE SAME DAY THE CUT IS MADE. 12. PAVEMENT IS TO BE SAW CUT. (CUTS SHALL BE PERPENDICULAR TO EOP) 13. PAVEMENT REPAIR SHOULD MATCH EXISTING ROADWAY ELEVATION WITH NO DIPS OR RAISES. 14. BACKFILL OF TRENCHES WITHIN THE ROAD RIGHT OF WAY SHALL BE BACKFILLED IN LA YERS NOT TO EXCEED SIX (6) INCHES AND THOROUGHL Y TAMPED (EACH SUCCESSIVE LA YER). 15. (A) UNLESS OTHERWISE DIRECTED BY THE CITY ENGINEERING DEPARTMENT, ALL MATERIAL FROM THE BOTTOM OF THE TRENCH TO WITHIN TWELVE (12) INCHES OF THE SUBGRADE SHALL HAVE AN IN- PLACE DENSITY OF 95% OF THE MAXIMUM DENSITY. (B) ALL MATERIAL WITHIN TWELVE (12) INCHES OF THE SUBGRADE LEVEL SHALL HAVE AN IN-PLACE DENSITY OF 100% OF THE MAXIMUM DENSITY. THE CITY ENGINEERING DEPARTMENT RESERVES THE RIGHT TO REQUIRE THE CONTRACTOR TO EMPLOY THE SERVICES OF A GEOTECHNICAL FIRM TO RUN DENSITY TESTS AND TO CERTIFY THE COMPACTION OF THE BACKFILL MATERIAL. 07-36 Permits, Checklists, and Forms Division 07 e e e e e e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 07.16 WARRANTY North Carolina Union County Date: RE: (Name of Subdivision) That Whereas, the undersigned subdivider of has requested (Name of Subdivision) approval by the City of Monroe of the final plat and/or acceptance by the City of any improvements in said subdivision; and, Whereas Chapter 154 § 154.60 of the Monroe Code of Ordinances provides that prior to said approval and/or acceptance of improvements the subdivider shall furnish to the City a written warranty against defects which shall guarantee the material and workmanship in said subdivision for a period of not less than eighteen (18) months from the date of such acceptance; Now, Therefore in consideration of the provisions of said section, which are incorporated herein by reference, and the granting of final plat approval andloi' acceptance of improvements by the City, the undersigned subdivider does hereby guarantee to the City of Monroe, its successors and assigns, the material and workmanship of said subdivision against any defects for a period of twelve (12) months from the date of acceptance, which said date is set out herein below, provided however, that until successful performance is obtained as determined by the Subdivision Administrator, this warranty shall not expire. (Date of Acceptance) (Signature of Subdivider) (Print Name of Subdivider) North Carolina Union County I, , a Notary Public in and aforesaid State and County, do hereby certify that subdivider(s), personally appeared before me this day and acknowledged the due execution ofthe foregoing instrument. WITNESS my Hand and Notarial Seal, this the day of ,200 My Commission Expires: Notary Public 07-37 Permits, Checklists, and Forms Division 07 e e THIS PAGE IS INTENTIONALLY LEFT BLANK e e /) . e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 07.17 GUARANTEEING SUBDIVISION IMPROVEMENTS In lieu of requiring the completion, installation, and inspection of all or any part of required subdivision improvements (as described in Section 154.50 through 154.60 of the City Code of Ordinances) prior to final plat approval, the City permits subdividers to deposit with the City cash, an irrevocable letter of credit, or other instrument readily convertible into cash at face value. Such financial guarantees shall be in an amount equal to 110% of the estimated cost of completing the required improvements. The duration of the guarantee shall be of a reasonable period to allow for completion and acceptance of the improvements, but in no case shall such time exceed eighteen (18) months. All subdivisions for which improvements have not been completed and accepted by the appropriate governmental agency at least thirty (30) days prior to the expiration of the guarantee shall be considered to be in default. The City may at this time use the financial guarantee to complete all necessary improvements. The following is a discussion of the process required for acceptance by the City of a financial guarantee. Step I: The subdivider must submit to the Subdivision Administrator an itemized list showing cost estimates signed by his contractor for all required improvements not completed in the subdivision. Note: As a minimum, for each work item the quantity of work along with the unit price and total cost must be provided. If this list is incomplete or doesn't provide sufficient detailfòr independent analysis, the request cannot be reviewed by the City. Step 2: The cost estimates are reviewed by the City's Engineering Department and Water Resources Department for accuracy and completeness. Comments are forwarded to the Subdivision Administrator. Step 3: The subdivider is given a letter by the Subdivision Administrator showing the amount for which a letter of credit or other acceptable form of guarantee must be submitted. Step 4: If a letter of credit or other acceptable legal instrument is submitted by the subdivider, the Subdivision Administrator, Finance Director, and City Attorney will review the instrument to determine its sufficiency. If it is found to be insufficient the subdivider will be notified and given the chance to resubmit a guarantee. If it is found to be sufficient, the subdivider will be notified that the final plant can be recorded as soon as recordable copies (3 mylars) have been filed with the Planning and Development Department and all fees are paid. Step 5: The subdivider may request a one-time reduction in the tinancial guarantee not to exceed 50% of the original amount of the guarantee once at least 50% of the required improvements have been made. Steps 1, 2, and 3 of the process outlined above are repeated for this process. All subdividers are encouraged to work closely with City staff to ensure that unexpected delays are prevented whenever possible. City staff may require as many as ten (10) working days to review a request for financial guarantee, so please submit your requests and required information as soon as possible. The actual time required for review and approval of the requests will vary depending upon staff workload and the completeness of the request. 07-38 Permits, Checklists, and Forms Division 07 e e THIS PAGE IS INTENTIONALLY LEFT BLANK e e e e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 07.18 SUBDIVISION BOND ESTIMATE FORM Typical listing of items for roadway, storm drainage, water, and sewer improvements DATE: BY: ITEM QUANTITY UNIT COST AMOUNT ROADW A Y & STORM DRAINAGE CONSTRUCTION Mobilization Lump Sum Clearing & Grubbing Lump Sum Unclassified Excavation c.Y. Borrow c.Y. Curb & Gutter L.F. CABC Ton Black Base HB Ton Binder H Ton Asphalt Surface Course Type 12 Ton Asphalt Cement Ton 4" Concrete Walk S.Y. 6" Concrete Drive c.Y. Catch Basins/Drop Inlet Each Catch Basin/Drop Inlet Frame & Grate Each Manholes Each Manhole Frame & Cover Each Adjusting Street Structures Each Reinforced Concrete Pipe - _ inch LX Reinforced Concrete Pipe -_ inch L.F. Reinforced Concrete Pipe - _ inch L.F. Reinforced Concrete Pipe - _ inch L.F. Foundation Condition Material Ton Flared End Section Each End Wall/Head Wall C.Y. Seeding S.Y. Concrete Steps C.Y. 07-39 Permits, Checklists, and F 0D11S Division 07 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL I ITEM I QUANTITY I UNIT COST I AMOUNT I Reset Fence L.F. Rip-Rap S.Y, Pavement Sawing (Unclassified Excavation) L.F. Tree Removal (Unclassified Excavation) Lump Sum Other: SUB-TOTAL WATER MAIN CONSTRUCTION Mobilization Lump Sum Water Distribution Pipe 12" Water Main L.F. 10" Water Main L.F. 8" Water Main L.F. 6" Water Main L.F. 2" Water Main L.F. Gate Valves 12" Each 10" Each 8" Each 6" Each 2" Each Fire Hydrant Assemblies with 6" Gate Valve Each Fire Hydrant Extensions 0 > I V.F. Fire Hydrant Extensions 1 < V.F. Fittings Tapping Sleeve and Valve - 12" Each Tapping Sleeve and Valve - 8" Each Tapping Sleeve and Valve - 6" Each 3/4" Water Services Services on Same Side as Water Main Each Services involving a Road Crossing Each 07AO Permits, Checklists, and Forms Division 07 e e e e e e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL ITEM QUANTITY UNIT COST AMOUNT Testing of Water Mains L.F. Other: SUB-TOTAL SEWER MAIN CONSTRUCTION Mobilization Lump Sum Sanitary Sewer Pipe - 12" Sanitary Sewer Main 0' - 6' Depth L.F. 6' - 8' Depth L.F. 8' - 10' Depth L.F. 10'· 12' Depth L.F. 12' and Deeper L.F. Sanitary Sewer Pipe - 10" Sanitary Sewer Main A' . 6' Depth L.F. 6' - 8' Depth L.F. 8' . 1 A' Depth L.F. 10' - 12' Depth L.F. 12' and Deeper L.F. Sanitary Sewer Pipe ~ 8" Sanitary Sewer Main A' - 6' Depth L.F. 6' - 8' Depth L.F. 8' . 1 A' Depth L.F. 10'· ]2' Depth L.F. 12' and Deeper L.F. Substituting Ductile Iron Pipe ]2" DIP L.F. ]0" DIP L.f. 8" DIP L.F. 4' Diameter Manholes (0' - 6') Grouted in Place Each Bolted Down Frame and Cover Each 07-41 Permits, Checklists, and Forms Division 07 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL ITEM QUANTITY UNIT COST AMOUNT Extra Depth Manholes V.F. 4" Sanitary Sewer Service Laterals Each Connections to Existing Sanitary Sewer Main Each Solid Rock Excavation c.Y. Testing for Exfiltration L.F. Other: Su b- Total Sanitary Sewer TOT AL SUBDIVISION BOND ESTIMATE (Roadway, Storm Drainage, Water and Sewer Improvements) 07-42 Permits, Checklists, and Forms Division 07 e e e e e e e DIVISION 08.00 ._ ROADWAY/STORM DRAINAGE DETAILS e e e e THIS PAGE IS INTENTIONALLY LEFT BLANK e e e e e ~ ........ N M "'Í" if) \D r- oo 0\ 0 ........ N M ........ N M "" if) \D r- ........ N ........ 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'" .-; >'" d on z . .-; I:>~ Z 0 m Z ..,,> > '" .........¡ >on n....¡ mo S~ on -r <:: >- :::c æ C/'J -¡; ~ ~ ""0 ¡......; n > r ~ g; ¡......; ~ ~ C ~ o c ~ ..... '" ::: > on :¡; '" o on d z m Ii (/) tTi n -¡ Õ Z tD Co s: ~ '" =õ ;¡."" z ' ~ .." 0;:1 '" .,,> .." 0 ......-; .." );0 on '" '" n....¡ ~ 8~ on -", Ñ on '" 0 ." ::;; '" ~ > r ~ ¡......; Z Q ~ ~ ¡......; r o ~ Z > Q trJ n ~ o en en Z Q e . DIVISION 09.00 e WATER MAIN CONSTRUCTION e . e · THIS PAGE IS INTENTIONALLY LEFT BLANK e · · · 09.01 · e · e 09.01.01 09.01.02 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 09.00 WATER MAIN CONSTRUCTION DESIGN OF WATER MAINS FIRE FLOW AND RESIDUAL PRESSURE REQUIREMENTS System design should be such that fire flows and facilities are in accordance with the requirements of the State Insurance Services Office. The minimum fire flow shall be 1000 GPM with a minimum residual pressure of20 PSI for single-family residential subdivisions. Other developments shall use the "ISO Guide for Detennination of Required Fire Flow." Where these requirements cannot be met, contact the City of Monroe Director of Water Resources for guidance. HYDRAULIC DESIGN Water distribution systems shall be designed to provide adequate flow and pressure for both domestic supply and fire protection. Transmission mains 12-inches in diameter and larger shall be designed to deliver maximum daily design flow with a head loss not to exceed 4' per 100'. Lower head loss criteria may be established based on length of main and available system head. Distribution mains 8-inches in diameter and smaller shall meet the same criteria for maximum daily domestic demand, but head losses up to 10' per 100 are acceptable for fire flow design provided volume and residential pressure requirements are met. Design shall be based on Hazen-William "c" value of 140 for PVC and 130 for ductile iron or concrete cylinder pipe. When requested the Engineer shall submit calculations offire requirements and domestic watèr demands for the project. Information concerning the available water pressures and capacity will be furnished by the City upon request. The water distribution systems and any extensions shall be designed to supply the demands of all customers while maintaining the following minimum pressures and velocity. 1) 40 PSI for maximum daily flow 2) 30 PSI for peak hourly flow 3) 20 PSI for maximum daily flow plus fire flow 4) 4 FPS for flushing Residential and light commercial average daily flow requirements shall be determined by use of A WW A Manual No. M22. Actual estimates for site specific commercial and industrial customers shall be used or Engineer's estimate for "Spec" developments. 09-1 Water Main Construction Division 09 09.01.03 09.01.04 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL Transmission mains 12-inches and larger shall be designed on the basis of the most recent system wide demand data and hydraulic modeling. . Pressure reducing valves shall be installed on the customer side of the meter whenever the maximum system pressure at the service connection is greater than 80 PSI. Water mains shall be looped whenever practical. Dead-end mains when approved by the City, shall not exceed 1000 feet in length and shall be sized to provide maximum retention time of water in the dead-end section of24 hours based on 80% ofthe average daily consumption at full development. . SERVICE LINES AND METERS Water services and meters shall be located and installed in accordance with the City's Standard Details. All meter types and sizes shall be approved by the Director of Water Resources based upon obtaining the highest degree of accuracy for the patterns and quantities of usage by the specific customer. Minimwn water service size shall be 3/4" with a 5/8" positive displacement meter with gallons read. All new water services shall include a backflow prevention device approved by the Director in accordance with the City's cross-connection control standards. Refer to Standard Detail 10.10.00. e Water services for proposed subdivisions may be either single services or dual services with the meter settings located adjacent to the property lines between the proposed lots. The dual service lines shall be I" with a Y -branch or an approved divider fitting running to separate meter and yoke assemblies in separate meter boxes. MAINS e All new water mains shall be field surveyed under the supervision of a Registered North Carolina Surveyor. 1. All existing underground utilities (water, sewer, gas, stonn drains, telephone electric power, cable TV etc.) along the route shall be located horizontally. Where potential for significant elevation conflicts with proposed water main exist, the existing utilities shall be exposed and elevations determined. Contact the individual utilities to determine dig up policies and procedures. e· 2. Vertical control shall be tied to NOS, NCGS or established City control points. Temporary bench marks shall be established at intervals of 09-2 Water Main Construction Division 09 e . e . e CITY OF MONROE ST ANDARD SPECIFICATIONS AND DETAIL MANUAL approximately 1000 feet and tied back to the established vertical control with the maximum error of 0.03' I M, where M is the number miles in the level loop. 3. Horizontal alignment shall be chosen in coordination with the Design Engineer and referenced to the edge of pavement, right-of-way line, or other identifiable feature. Centerline profile shots shall be taken at 50-foot intervals with closer shots at break points such as culverts, creeks, etc. In cut sections, edge of pavement profile is required also. 4. All water mains greater than 12-inches in diameter shall require a profile on the Engineering Plans submitted. 5. All water main extensions requiring off site General Public Utility Easements shall be detennined in consultation with the Water Resources Engineer and approved by the Water Resources Director. 6. City of Monroe Planning Department must approve all Subdivision Plans within the City's Corporate Limits prior to a review of Water Main Extension Plans to serve the Subdivision. 7. Any water main extension that is part of an Annexation or Capital Improvement Project (CIP) shall adhere to all Engineering Design and Survey Requirements of the Specific Request For Proposal (RFP) written for the project by the Water Resources Department. 09.01.05 LOCATION AND DEPTH As a general rule, water mains are located only with the limits of street or highway right-of-way. Where this is not possible because of construction conditions, underground conflicts, or requirements of the controlling agency, location in private easements may be approved by the City. Insofar as possible, water mains should be located out of existing paved areas and a fixed distance fÌ'om the edge of pavement or back of curb. Alignment should be chosen so as to minimize conflicts with utilities and underground structures. The design Engineer in consultation with the Surveyor should review the City's "Standard Detail for Local Residential Streets." This Detail can be found in Division 08 of this manual. Depth of water lines shall be set to minimize high and low points and at sufficient depth to prevent fÌ'eezing. A minimum cover of3 feet or 36-inches below final grade is required except where short sections at shallower depth are required to avoid major utility conflicts. A maximum cover of 5 feet or 60-inches shall be required except where greater depths must be obtained in order to avoid conflicts 09-3 Water Main Construction Division 09 09.01.06 09.01.07 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL with other utilities or existing structures. Whenever depth is less than 36-inches ductile iron pipe shall be used. No water mains shall be installed with less than 24-inches of cover. Where the centerline of grade is higher than the edge of pavement, the top of the water mains shall be at least 36" below the edge of pavement. The Design Engineer shall indicate on the construction plans final grade and existing grade for all water main profiles. e PIPE MATERIALS AND THICKNESS DESIGN Complete Specifications for the City approved water materials are provided in the Water Main Materials Section of these Specifications. The following pipe materials are approved. . Size Thickness Material Specification 2-inch SDR-13.5 PVC ASTM-D2241 6-inch SDR-14 PVC A WW A-C900 6-inch Class 350 DIP AWWA-C151 8-inch SDR-14 PVC A WW A-C900 8-inch Class 350 DIP AWWA-C151 12-inch SDR-14 PVC A WW A-C900 12-inch Class 350 DIP AWWA-C151 e > 12-inches Class 250 DIP AWWA-C151 THRUST RESTRAINT 1. Thrust Blocks Thrust restraint for water mains shall be provided by concrete thrust blocks bearing on undisturbed soil or by approved restrained joints. The bearing area for thrust blocks shall be based on the required test pressure of 200 PSI and a field determination of the load bearing capacity of the soil. Conservative estimates of soil load bearing capacities by experienced and qualified inspectors are nonnally allowed. However, an analysis may be required by the Water Resources Engineer. e 2. Restraint Joint Fittings Restrained joint fittings shall be as specified in the Water Main Materials Section of these Specifications or as recommended by the pipe e manufacturer and approved by the Water Resources Engineer, whichever is more conservative. Restrained lengths shall be calculated by the Design 09-4 Water Main Construction Division 09 · e e e e 09.01.08 09.01.09 CITY OF MONROE ST ANDARD SPECIFICATIONS AND DETAIL MANUAL Engineer for each application. Calculations shall be based on a test pressure of200 PSI regardless of pressure zone with 0 skin :lÌidion allowance and a safety factor of 1.5. Input data and results of any retrained joint program shall be submitted with the construction plans. 3. Thrust Restraint Application The Design Engineer shall indicate either the use of thrust blocks or restraint joint on all water main construction plans. The City's Standard Details shall cover the dimensions of thrust blocks. The following applications require restraint joint fittings only. No thrust blocks will be permitted. a. Vertical Bends ofMJ Fittings b. Fire Hydrant Installations (Required with Restraint Joint Fittings) VAL VING REQUIREMENTS Main line valves shall be located at all pipeline intersections and at changes in pipe diameter. Maximum valve 'spacing shall be 1000 feet in the distribution system and 2000 feet for transmission mains l2-inches and larger unless othetwise directed by the City's Director of Water Resources. Two valves shall be provided at te~s and three valves at crosses, with valves located either at road intersection radius points or as close to the fitting as possible. Where valves must be located away ITom intersections, they should be located at fire hydrant installations. If the line is a one way feed, the valve should be on the dead-end side of the hydrant branch. Each fire hydrant shall have a hydrant guard valve between the hydrant and the main line located according to current standard details for hydrant installations. FIRE HYDRANT SPACING Fire hydrants shall located within a radial distance of 1000 feet in single family residential areas. Hydrants located in residential cul-de-sacs shall be with-in 500 feet of the rear setback of the last lot as measured along the street. Fire hydrants in commercial, industrial or multi-family areas shall be located with-in a radial distance of750 feet. All fire hydrants should be located adjacent to property lines whenever practical. 09-5 Water Main Construction Division 09 09.01.10 09.01.11 09.01.12 09.01.13 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL PROVISIONS FOR TESTING AND DISINFECTION e Provisions for testing and disinfection shall be covered under the Construction, Installation and Testing of Water Mains Section of these Specifications. AIR RELEASE,AIR RELIEF, VACUUM VALVES AND BLOWOFFS Manual air releases shall be provided at high points on all mains. Manual air releases shall be according to the current City's Standard Detail. Fire hydrants located at high points shall be considered as manual air relief valves. e On pumped lines or in any other application where the potential for water column separation exists, the Design Engineer shall evaluate the need for automatic air relief and vacuum valves and shall recommend specific valve configurations for Approval by the City's Water Resources Director. All transmission mains 12-inches and larger must be designed such that they can be de-watered completely within four (4) hours through blowoffs and fire hydrants. Dead-end lines shall be terminated with 2-inch blowoffs in accordance with the City's current Standard Detail. e MINIMUM PIPE SIZE AND LIMITATIONS QF SMALL DIAMETER MAINS The minimum pipeline diameter for distribution system mains providing fire flow shall be 8-inches. 6-inch pipelines for fire protection shall be permitted provided that hydraulic calculations are provided by the Design Engineer and subject to approval by the Water Resources Engineer, in accordance with the Water Resources Department Extension Policy. 2-inch diameter lines may be used in residential subdivisions olÙY for a maximum length of 500 feet, where' fire flow requirements and minimum hydrant spacing is provided by 6-inch and larger mains. e No more than 20 residential customers may be served fÌom a dead-end 2-inch main and no more than 40 customers may be served fÌom a looped 2-inch main. CONFLICTS WITH EXISTING AND PROPOSED UTILITIES 1. Sewer Mains a. 18-inch vertical clearance for water lines installed above and below sewer lines. 10 feet horizontal separation for water lines parallel to sewer line. e b. 09-6 Water Main Construction Division 09 e e e 09.01.14 . 09.01.15 e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL c. Ductile iron pipe is required for water and sewer when it is not possible to maintain these clearances. 2. Storm Drains. Gas Mains and Telephone Duct Banks When crossing storm drains, gas mains or telephone duct banks, a vertical clearance of 18-inches shall be maintained. When over crossing storm drains with minimum cover, this clearance may be reduced provided specific approval of the North Carolina Department of Transportation or City Engineering Department is obtained and provided the minimum cover requirements for water mains are maintained. Whenever the 18-inch clearance requirement is not met, ductile iron pipe shall be used. 3. Underground Cables Individual telephone, electric power and cable TV cables may be crossed with a minimum clearance of 12-inches and a horizontal separation of2- feet. The Design Engineer shall refer to the City's Standard Detail for Local Residential Streets in Division 08, if applicable. BORES AND TUNNELS Water main crossings of railroads, major City streets and numbered State highways must be encased in a steel pipe installed by boring and jacking or in a dug tunnel lined with prefabricated steel tunnel liner plates. All carrier pipes shall be secured in the encasement pipe by use of encasement runners. Minor City Street and secondary roads maintained by NCDOT may be open cut with specific permission of the controlling agency and if specifically shown as open cuts on the construction plans. Engineer shall show on the construction plans the Bore Pit Limits. Construction specifications for carrier pipe steel casing pipe, steel tunnel liners and encasement runners shall be in accordance with City's current Standard Detail and shall meet current material specifications as covered in the Water Main Materials Section, of these Specifications. Refer to Section 09.01.18 for minimum size and thickness standards for casing pipe and tunnel liners for various water main sizes. STREAM CROSSINGS Water mains crossing stearns shall be ductile iron pipe and shall meet current material specifications as covered in the Water Main Materials of these Specifications. The pipe shall be buried at sufficient depth to provide a minimum oftwo (2) feet of cover between the top of the pipe and the streambed. The pipe and joints shall be protected against steam bed erosion, Wlstable subsoil conditions, and any other anticipated horizontal or vertical loading. Protective measures may include RipRap, concrete encasement, driven or drilled piers at each pipe joint or 09-7 Water Main Construction Division 09 09.01.16 09.01.17 CITY OF MONROE ST ANDARD SPECIFICATIONS AND DETAIL MANUAL use of ball and socket pipe. For large stream crossings, the Water Resources Engineer may require specific designs based on subsurface soil investigations. e DESIGN OF SOIL EROSION AND SEDIMENT CONTROL MEASURES All water main construction plans, regardless of project size shall include measures and/or devices to prevent soil erosion and to prevent sedimentation of streams and drainage ways. This requirement is waived for water mains in subdivisions projects where the project erosion control plans includes water main construction and where enforcement of erosion control requirements is not under the direct control of the Water Resources Department. Design of erosion and Sedimentation Control devices shall be in accordance with the State of North Carolina Erosion and Sedimentation Control Planning as well as the City of Monroe Ordinance. e ENGINEERING PLAN SUBMITTAL REQUIREMENTS 1. Licensed North Carolina Professional Engineer: All plans submitted for review by the City of Monroe Water Resources Department must be stamped, signed and dated by a Licensed North Carolina Professional Engineer with expertise in the design of water mains. The Professional Engineer shall be in good standing with the North Carolina State Board of Registration and shall be in responsible charge of the water project. e 2. Drafting Standards: The standard symbols and line weights used in drafting City of Monroe water and sewer plans are provided in Section 09.01.19. A legend of symbols is required with each set of construction plans and where additional symbols are required, they shall be clearly defined and included in the legend. e The standard scale for City Of Monroe construction drawings is I" = 40' or 1" = 50' in plan view and I" = 4' in profile and I" = 5', respectively. Expanded detail drawings should be used whenever needed to clearly convey design details. Standard sheet size shall be 24" x 36" for construction plans and 8-1/2" x 14" for any NCDOT encroachment maps. All sheets must contain the standard City of Monroe title block format. City of Monroe Erosion Control Detail Sheets and Water and Sewer Details Sheets where appropriate. e 09-8 Water Main Construction Division 09 e . e . e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL Engineer shall submit all drawings computer files as an AutoCad Rl4 .dwg file. Engineer shall also submit as-builts mylars on 0.3 rum Mylar dated, sealed, and clearly marked as-built. Elevations must be shown at the left side ofthe profile section. Station numbering should increase fÌom left to right and should be approximately above the corresponding plan view stationing. Both plan and profile must be shown on the same sheet. Sewer line drawings should run from left to right upstream. Structures and appurtenances (vaults, manholes, hydrants, valves, piers etc.) should be labeled in plan and profile with station number and standard detail reference if applicable. All underground obstructions are shown on both plan and profile (if applicable). Vertical clearance requirements are shown in profile and any requirements for Ductile Iron Pipe are shown. Pipe sizes are shown on plan view and properly scaled on profile. Distance of water main fÌom edge of pavement is shown. Drainage ditches are shown with direction of storm runoff. Erosion control devices are shown in plan view and properly labeled. Bearings on sewer lines shall be labeled in the upstream direction. The City of Monroe symbols library and title block format are available in Auto Cad upon request. A list of appropriate symbols is provided in Section 09.01.19. Subdivision sewer plans shall include lateral locations only to show how each lot will be served. It shall be noted on the plans that exact lateral locations are determined during construction, and that exact locations are required for as-built records. Water service COlll1ectionS shall not be shown on plans but exact installed locations are required for as built records. 3. Plan Submittals: a. Design Criteria: A checklist for design review for water, main extensions has been provided in Section 09.01.20 to serve as a guideline of the requirements. b. Review Sets: The Engineer shall submit to the City of Monroe Water Resources Department two (2) sets of Plans for each review until approval has been granted. After City of Monroe approval has 09-9 Water Main Construction Division 09 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL been granted, the Engineer shall submit three (3) sets of the City of MOlll'oe approved plans for submission to The North Carolina Department of Environment and Natural Resources -Public Water Supply Section (NCDENR-PWS) for their review. All three sets of plans must be sealed and signed with the Professional Engineers original signature and date. c. Approved for Construction Plans: Plans shall be considered approved for construction after the DEH review and approval has been granted. At which time, the Engineer shall submit to the City ofMolll'oe four (4) sets of the Plans for construction use. d. Final As-Builts Plans: After construction has been completed and approved by the City of MOlll'oe Water Resources Department, the Contractor shall submit to the Engineer a set of as-built drawings from the construction plans. The Engineer shall make the necessary modifications to the plans to reflect the as-built changes and present to the City of Monroe Water Resources Department one (1) "As- built" sets of the plans on Mvlar Sheets. 4. Specifications: The Engineer shall state on the plans that "All Work Shall Conform To The Current City Of Monroe's Water Resources Department Specifications For Water Main Design And Construction. Any Discrepancies Between The Plans And Specifications Shall Be Subject To The Decision Of The Water Resources Department Engineer Whose Decision Shall Be Final." This reference to the City's standard specifications shall be applicable to only water mains and service ,lines. Any plans involving booster pump stations or water treatment plant facilities or upgrades shall require specific specifications prepared by the Engineer in consultation with the City of Monroe Water Resources Department. 5. Application: The City of Monroe Water Resources Department shall complete and submit all Water Main Extension Applications and Engineering Reports. No Applications for a water main extension shall be submitted without consent ofthe Water Resources Director. 09-10 Water Main Construction Division 09 e e e e e e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 6. Encroachments: The Engineer shall complete and submit to the City of Monroe an encroachment agreement for all work conducted on NCDOT rights-of- way. The Water Resources Department will mail to the Engineer either a two party or three party encroachment agreement depending on the nature of the work. The Engineer shall return one (1) original and six (6) copies of the encroachment agreement with seven (7) sets of the plans showing the work to be performed on NCDOT rights-of-way. 7. Shop Drawings and Submittals: Shop Drawings and Submittals for Materials to be used in the water main construction are covered in the Water Main Materials Section of these Specifications. 09-11 Water Main Construction Division 09 09.01.18 Standards for Casing Pipe and Tunnel Liners The minimum size and thickness standards for casing pipe and tunnel liners for various water main sizes are as follows: ¡Carrier Pipell DOT Size II DOT Thickness II Railroad Sizell Raliroad Thicknessll Tunnel Size* I 6-inch DIP 12.75" .250" 16" .281" 48" 8-inch DIP 16" .250" 18" .312" 48" 10-inch DIP 18" .250" 20" .344" 48" 12-inch DIP 24" .250" 24" .406" 48" 16-inch DIP 24" .250" 30" .469" 48" 18-inch DIP 30" .312" 30" .469" 48" 20-inch DIP 36" .375" 36" .562" 48" 24-inch DIP 36" .375" 36" .562" 48" 30-inch DIP 42" .500" 48" .750" 54" 36-inch DIP 60" 42-inch DIP 72" 38-inch DIP 78" 54-inch DIP 78" 60-inch DIP 84" * Liner plate gauge to be determined by controlling agency and/or depth of installation. 09-12 Design of Water Mains Division 09 . . e e e 09.01.19. STANDARD SYMBOV3 FOR SANITARY SEWER AND WATER CONSTRUCTION PLANS .~,,-~_.._. ------------ .-....------.- _.~~~ ~~-_. ~._~.,. . ~,,~~. ."~~ _._~~.. ,"~.,~- ~-_.. -~ ~- -~ --~ .~ ..-- -.-.---.--..."-..--.---.--.,¡g--...-----..---- ---~-~-- t'" -.-~-.-.----- o o ------ ------ T G W ,.-------------.-------.----..--...--..... e SS ·__~_,__~_"~W~"~,___~___·____._______~~_·_~_____~_~_~·~ .,~--_...._._~_._~._~.~.~--~~~......------.~ ~~..J!i"~J.~'X"~::¡_~;rAt~f~~T.I~.m:œ..~ -------------- --------- - - -' e !III o 1m !:8j @ o -(]> o :¢: g -v- e <S> <S> ~ .. It> 83 G K!I IS! 6- IX> -Ó- Þ<J o e EXISTlNG STREET R/W PROPOSED STREET R/W EDGE OF PA VEMEN T EDGE OF DIRT/GRA VEL ROAD SUR VEYED PROPER TY LINE UNSURVEYED PROPERTY LINE FENCE CENTERLINE OF CREEK EXISTlNG STORM DRAIN PROPOSED STORM DRAIN (LABELED) TELEPHONE LINE GAS LINE EXISTlNG WA TER LINE PROPOSED WA TER LINE EXIS TlNG SANI TAR Y SEWER LINE PROPOSED SANITARY SEWER LINE (LABELED) EXIS TlNG CURB & GU TTER PROPOSED CURB & GUTTER EXISTING DRAINAGE & UTILITY EASEMENT PROPOSED PERMANENT DRAINAGE & UTILITY EASEMENT EXISTING SANITARY SEWER EASEMENT PROPOSED PERMANENT SANITARY SEWER EASEMENT DUKE POWER OR AT&T R/W PROPOSED TEMPORARY SLOPE & CONSTRUCTION EASEMENT FRAME & GRA TF CA TCH BASIN OPEN THROA T CA TCH BASIN JUNCTION BOX ELECTRICAL TRANSFORMER EXISTING STORM DRAINAGE MANHOLE SHRUB POWER POLE IRON STREET LIGHT TREE SIGN EXISTING SANITARY SEWER MANHOLE PROPOSED SANITARY SEWER MANHOLE WELL CA TV PEDESTAL EXISTING ELECTRICAL MANHOLE GAS TEST STA TlON CONCRETE MONUMENT MAILBOX R/W MARKER TELEPHONE PEDESTAL EXISTING TELEPHONE MANHOLE EXIS TlNG FIRE H YDRAN T EXISTING WA TER VAL VE WA TER METER 09-13 e e THIS PAGE IS INTENTIONALLY - LEFT BLANK ., e e . . e e . CITY OF MONROE WATER RESOURCES DEPARTMENT SPECIFICA nONS 09.01.20 Water Resources Department Checklist for Design Review for Water Main Extensions Subdivision or Project Name: First Review By: Date: Second Review By: Date: Third Review By: Date: Check-off each of the requirements in the appropriate column as each requirement is approved. Do not check-off a listed requirement where revisions are required as result ofreview. Revision requirements should be noted in response to designer. Enter "N/ A" under First Review if a requirement is not applicable to project ofspecific revIew. First Second Third Review Review Review GENERAL REQUiREMENTS ~ ~ _ Plans Sealed and Signed by Registered Professional Engineer _ _ ~ Scale of All Plan Sheets Labeled _ ~ _ Date of Plans and Each Revision Shown _ ~ _ If Major Subdivision, Preliminary Plat Approved by Planning Director _ ~ _ If Major Subdivision, Streets and Lots Conform to Approved Preliminary Plat _ _ _ If Multi-Unit Development, Approved by Planning Director _ _ _ If Multi-Unit Development, Site Plan Conforms to Planning Approval _ _ _ Survey for Design Tied to City Monument or N C Grid Coordinates WATER MAIN DESIGN _ _ _ Water Main Sizes Conform to City Water System Plan _ _ _ Water Main Sizes Adequate to Provide Sufficient Fire Flow (Attach Calculations) _ _ _ Water Main Sizes Adequate to Achieve Water Quality Objectives _ _ _ Water Main Sizes and Material Labeled _ _ _ Fire Hydrant Spacing Correct _ _ _ Fire Hydrant Locations Correct (At Intersections or Property Lines When Approp) _ _ _ Main Line Valve Spacing Correct _ _ _ Main Line Valve Locations Correct _ _ _ Water Mains Located in Street R!W or Approved Exception _ _ _ Water Main Locations in R/W Conform to Street Section Details _ _ _ On-Site Necessary Easements Shown on Approved Plat or Recorded _ _ _ Off-Site Necessary Easements Obtained and Recorded _ _ _ Easement Widths Meet Current Standards for all New Water Mains _ _ _ Blow-Off or Fire Hydrant at An Dead Ends _ _ _ Water Tap Stub-Out and Meter Shown to Each Lot 09-14 Water Main Construction Division 09 CITY OF MONROE WATER RESOURCES DEPARTMENT SPECIFICA nONS _ _ _ Water Meter Location in Front of Each Lot or Exception Acceptable to Customer Svc _ _ _ 10 Ft Horizontal Separation from all Parallel Sewer Mains; or DIP if Not Achievable _ _ _ IS Inches Vertical Separation at All Water Main Crossings Over Sewer; or DiP if Not Achievable _ _ _ Water Main Profile Provided or Depth of Bury Note with Finish Grade Shown on Utility Plans _ _ _ All Existing Facilities and Utilities are Shown _ _ _ 12 Inches Vertical Separation Over All Storm Sewer Crossing or DIP _ _ _ All Required Jack and Bore Casing Shown _ _ Plans Require DIP Restrained Joint Through All Casing _ _ Pipe Class Defined on Plans _ _ _ Sewer Main at Lcast 4 Ft Deep Wherc All Water Service Line Cross Over _ AlI12·inch and Larger Water Lines Stationed With Profile _ _ _ All High Points are Indicated and Have Air Releases Shown 09-15 Water Main Construction Division 09 e . e e e · CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 09.02 WATER MAIN MATERIALS 09.02.01 e 09.02.02 e · · DESCRIPTION: All materials, equipment, labor for water main construction shall furnished in accordance with these specifications and in accordance with the Plans prepared by a Registered Professional Engineer licensed to practice in the State of North Caro lina. SHOP DRAWINGS AND SUBMITTALS: The City of Monroe shall have the right to request a Formal Submittal or a Subdivision Submittal. Formal Submittal: As a minimwn, three (3) copies ofthe following shop drawing information shall be submitted to the City of Monroe Water Resources Department for review and approval. 1. Complete materials list of all items proposed to be furnished and installed under this Section. 2. Complete shop drawings of all items to be fabricated. 3. Manufacturer's specifications and other data required to demonstrate compliance with specified requirements. 4. Manufacturer's recommended methods of installation. Contractor or his Supplier shall reference 09.02.03 of this Section, which shall list all materials, if used on a water line project a shop drawing submittal is required under the formal submittal process. Subdivision Submittal: As a minimum, one (1) typed copy of the following shop drawing information shall be submitted to the City of Monroe Water Resources Department for review and approval per attached form located in 09.02.04 at the end of this Division. This form shall list the following: 1. Complete materials list of all items proposed to be furnished and installed under this Section. 2. Manufacturer, Size, and Model #, of all water main materials to be used on this project. 09-16 Water Main Construction Division 09 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 3. Supplier and Name and Phone Number of Contact nom Company. Contractor or his Supplier shall reference and complete the fonn in located in this Division, 09.02.04, which shall list all materials used on a water line project. Any not listed in the following materials specifications may require a detail review by the Water Resources Engineer and additional shop drawings and proof of conformance to accepted industry standards. 09.02.03 MATERIAL SPECIFICATIONS Unless superseded or modified in the Detailed Specifications, all materials, apparatus, supplies methods of manufacture, or construction shall confonn to the specifications contained in this Section. National material standards (ASTM, ANSI, A WW A, etc.) referred to herein shall be considered to be the latest revisions only. 1. PIPES A. Ductile Iron Pipe: Ductile iron pipe shall confonn to the requirements of A WW A Standard C-15l and shall have cement mortar lining of standard thickness in accordance with A WW A C-l 04. 'Unless otherwise shown on the construction plans, all ductile iron shall be furnished with push joints in accordance with A WW A C-lll. Twelve (12) inch and smaller diameter pipe shall be a minimum Pressure Class 350. Pipe greater then Twelve (12) inches in diameter shall be a minimum Pressure Class 250 and selection shall be based on the installation conditions. This pipe class shall be as shown on the plans or elsewhere in these specifications. 1. Mechanical Joint Accessories: Bolts and gaskets for Mechanical joint pipe and fittings shall be furnished by the pipe/fitting manufacturer and shall conform to ANSI Specifications A2l.ll (AWWA C-l1l) 2. Push-On Joint Material: Gaskets for push-on pipe shall be furnished by the pipe manufacturer. Gaskets and gasket lubricant shall meet the requirements of ANSI Specifications A2l.ll (AWWA C-lll) 3. Flange Joints and Accessories: Flange joints shall be in accordance with ANSI A2l.l 0 of either Class 125 or Class 250, as required. 09-17 Water Main Construction Division 09 . e e . e e e e e . CITY OF MONROE ST ANDARD SPECIFICATIONS AND DETAIL MANUAL Flanges, flange bolts and nuts, and gaskets shall confonn to the dimensional requirements of ANSI B16.1 for Class 125 or ANSI B 16.2 for Class 250. Bolts shall have standard Hexagonal heads and shall be provided with standard hexagonal cold pressed nuts unless otherwise specified. Bolts and nuts shall be made of the best quality refined iron mill steel and have round well fitting threads. 4. Restrained Joint Pipe: Flexible restrained joints shall be supplied by the pipe/fitting manufacturer. Gaskets with vulcanized internal stainless steel locking segments maybe used for 6-inch through 12- inch Ductile iron pipe. The following manufacturer's are approved, U.S. Pipe and Griffin. See Restrained Joint Fittings. B. Polyvinyl Chloride (PVC) Pipe: Unless amended on the Construction Drawings or elsewhere in these specifications, a114-inch, through 12-inch water main pipe may be PVC 1120 in accordance with A WW A C-900. 2-inch water main pipe shall be PVC 1120 in accordance with ASTM D- 2241 (SDR-21). The pipe shall have a minimum Pressure Class of200 PSI. PVC Pressure Pipe shall be made ttom white or blue pigmented virgin materials and shall be furnished in lengths of20 feet. Lesser lengths will be accepted to allow the proper placement offittings, valves, etc. All PVC Water Pipe will be shipped, stored, and strung at the project in such a manner as to be protected ttom accumulated exposure to sunlight and possible ultraviolet radiation of no more than four (4) weeks. I. Push on Joint: Pipe jointing will be by elastomeric joints only. Joints shall conform to ASTM D-3139 for two-inch pipe and to AWWA C-900 for 4-inch through 12-inchpipe. Pipe bells, with gasket seats, shall be fonned as the pipe is extruded. Sleeve couplings are not permitted except as necessary for repairs of existing mains or as necessary for the employment of pressure/leakage testing. The following pipes are currently approved: PIPES DIP PVC US Pipe ETI Griffin North American American John Manville 09-18 Water Main Construction Division 09 CITY OF MONROE ST ANDARD SPECIFICATIONS AND DETAIL MANUAL 2. FITTINGS A. Cast Fittings: Cast Fittings furnished for ductile iron or PVC pipe may be pressure Class 250, cast from ductile iron or gray iron, in accordance with A WW A C-II 0 or pressure Class 350 compact fittings, castftom ductile iron in accordance with A WW A C-153. Fittings shall be furnished with mechanical or flanged joints as indicated on the construction plans. All mechanical joint fittings will be Bell and Bell unless otherwise indicated on the plans. All cast fittings shall have cement mortar lining of standard thickness in accordance with A WW A C-l 04. B. Restrained Mechanical Joint Fittings: Mechanical joint restraints may be through the use of a follower gland with restraining device that imparts a wedging action against the pipe. The restraining device shall have twist off nuts to ensure proper contact with the pipe. Glands and restraining devices shall be manufactured of ductile iron. The restraining devices shall be heat-treated to a hardness of 3 70BHN. Gland dimensions shall be compatible with the MJ fittings herein before specified. The restrained joint shall be rated for a minimum 250 PSI working pressure with a 2: I safety factor. Mechanical joint restraints may be through the use of a specially machined ductile iron ring and follower gland that is used with standard mechanical joint gaskets and T -bolts. Retainer glands for installation on PVC C-900 pipe shall not be pennitted unless specifically approved by the Water Resources Engineer. Restrained mechanical joints shall be Mega-Lug as manufactured by EBAA Iron, Inc., GripRing as manufactured by Romac Industries, Inc., or Approved equal. Restrained joints may be used where shown on the plan, standard details or as approved by the Water Resources Engineer. C. Fittings for PVC Pipe: All fittings for 4-inch through 12-inch PVC pipe shall be cast iron or ductile iron as specified. Fittings for 2-inch and smaller PVC pipe shall be push on joint DIP or threaded brass. Elastomeric joints for PVC adapters and DIP fittings with push on joints shall confonn to ASTM D-3139. DIP adapters and fittings shall have a minimum pressure rating of200 PSI and shall, except for the threaded areas on the adapters, have an SDR of13.5 09-19 Water Main Construction Division 09 . . e e e e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 3. FIRE HYDRANTS Fire Hydrants shall conform to A WW A C-502, and shall be constructed for 3' -0" minimum depth of trench. All fire hydrants shall be constructed with bronze main valve seat which screws into a threaded bronze connection at the base ofthe hydrant. All fire hydrants shall be equipped with two 2-1/2" hose nozzles with National Standard Threads, and one 4-1/2" pumper nozzle with National Standard Threads. All hydrants shall open by turning to the left or counterclockwise, shall have a minimum valve opening of 4-1/2" and shall be furnished with a 6-inch mechanical joint inlet. The operating nut shall 1-1/4" pentagon. Any extensions required shall be as reconunended and supplied by the hydrant manufacturer. All fire hydrants and any portion of the hydrant assembly exposed to view (above adjacent elevation) shall be painted with two (2) or more eveIÙY applied coats of yellow hydrant enamel paint. Hydrants will be re-touched as necessary after installation and prior to acceptance. Hydrants shall be painted yellow before unloading at construction site. All fire hydrants located on private property that are connected to the City of Monroe water distribution system but not owned Of maintained by the City of Monroe shall be painted a metallic silver to distinguish them from City of Monroe fire hydrants. Connection to the City of Monroe shall be not be granted until all private property fire hydrants conform to this specification. A. All fire hydrants shall be one of the following models: FIRE HYDRANTS MANUFACTURER MODEL # Kennedy Valve Company Guardian No. K81-A Mueller Company Super Centurion 200 No. 421 American Flow Control Mark 73~ 1 Clow Valve Company Medallion B. Fire Hvdrant Tees: Tees will be Griffin Swivel Hydrant tee, Tyler 5-125 swivel hydrant tee or approved equal. An MJ Bend may be used. 09-20 Water Main Construction Division 09 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL C. Piping Extensions for hydrant installations may be made with 6-inch ductile iron nipples with Tyler long swivel hydrant adapters, Mega-Lug or Uniflange MJ Restraints or other method approved by the Water Resources Engineer. Refer to Standard Detail 10.07.00 in for further clarification. 4. VALVES A. Gate Valves: All valves on water mains 12-inches in diameter and smaller shall be direct bury gate valves and shall be furnished with Charlotte Foundries Standard Valve boxes set in concrete "doughnut" pads as specified. Gate valves shall be furnished with non-rising stems only, and stem seals shall be of the "0" ring type only. Valves two (2") inches and larger shall be furnished with two inch square operating nuts and shall open by turning left or counterclockwise. Valve ends shall normally be mechanical joint with necessary glands; gaskets and bolts furnished with the valve. Flange ends shall be furnished for special installations as shown on the construction plans. Flange by mechanical joint ends shall be furnished for tapping valve installations Gate valves shall be of the resilient seat type in accordance with A WW A C-509 with a working pressure of 200 PSI. Resilient seated gate valves must be furnished with durable opaque end shields to prevent ultra violet damage to the rubber discs. Only valves which have been specifically approved by the City of Monroe may be furnished. Following are approved manufacturers and models. At the present time, the gate valves listed below have been approved: 4" THROUGH 12" GATE VALVES MANUFACTURER MODEL # Kennedy Valve Company 4571X Mueller Company A-2360-23 American Flow Control 2500 Series (D I) Clow Valve Company F6100 09-21 Water Main Construction Division 09 e e e e e . . e . e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 2" HARD BODY GATE VALVE WITH RESILIENT SEAT & 2" OPERATING NUT MANUFACTURER MODEL # Mueller Company 2360-8 American Flow Control 500 Series (DI) Clow F 6103 B. Butterfly Valves: shall not be permitted. c. T appinlZ Valves: All tapping valves on water mains shall be A WW A approved. All tapping valves shall open left or counterclockwise. Below is a list of currently approved tapping valves: TAPPING VALVES , MANUFACTURER MODEL # American Flow Control Series 2500 FLANGE X MJ Mueller T2360~19 FLANGE X MJ Clow F6114 FLANGE X MJ 5. WATER MAIN TAPS All Taps On Existing Active Mains Shall Be Made By City Forces In Coordination With The Proposed Water Main Construction. Service Saddles shall be installed by Contractors during the construction of proposed mains only. A. Tapping Sleeves: Tapping sleeves may be ductile/cast iron mechanical joint, stainless steel full gasket, or fabricated steel with wedge gasket around tap opening. Twelve-inch (12") and smaller sleeves shall be rated for 200 PSI working pressure. Working pressure rating for tapping sleeve larger than twelve- inches in diameter shall be detennined by the Water Resources Engineer. Mechanical Joint tapping sleeves shall be furnished complete with joint accessories including split glands, split gaskets and bolts, etc. and shall be 09-22 Water Main Construction Division 09 CITY OF MONROE ST ANDARD SPECIFICATIONS AND DETAIL MANUAL compatible with the type and class of pipe being tapped. The outlet flange shall be Class 125 per ANSI B16.1 compatible with approved tapping valves. Stainless Steel tapping sleeves shall be manufactured from 18-8, type 304 stainless steel. The outlet flange may be ductile iron or stainless steel. The gasket shall be a grid pattern design and shall provide full circumferential sealing around the pipe to be tapped. The sleeve shall include a test plug for pressure testing the installed sleeve prior to making the tap. All welds shall be passivated. The out flange shall be Class D per A WW A C-207- ANSI 150 pound drilling compatible with approved tapping valves. Fabricated steel tapping sleeves shall be fusion bonded epoxy coated to a 12-rrúl thickness. The sleeve shall include a test plug for pressure testing the installed sleeve prior to making the tap. The steel outlet flange shall be Class D per AWWA C-207-ANSI 150 pound drilling compatible with approved tapping sleeve. Following is a list of approved tapping sleeves. TAPPING SLEEVES Class 350 DIP PVC C-900 Asbestos Cement Steel Size Pipe Mueller - H615 Mueller H615 AFC - A2800 Romac SST Clow - F5205 Clow - F5205 Clow F5205 AC Smith Blair 662 RomacSST AFC - C2800 RomacSST B. Service Saddles: Service saddles shall be ductile iron meeting or exceeding ASTM 536-80, Grade 65-45-12 and protected with corrosion resistant paint. All saddles for taps smaller than 1-1/2" shall have threads to accept standard A WW A Corporation valve inlet thread "CC". Double strap or bar service saddles are approved for use oIÙY on Ductile iron pipe water mains. All service saddles on PVC water mains shall have stainless steel straps. No single bar strap saddles are approved. Services saddles for taps 1-1/2" and 2" taps shall have IPS Threads. Service saddles manufacturers and model numbers are listed under appropriate service main size. 09-23 Water Main Construction Division 09 e . e e e . e e e . CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 6. AIR RELEASES All Air releases specifically indicated to be installed on water main extensions shall be Automatic Air Release Valves. Fire hydrants located at topographical high points and blow-offs at the end of water mains shall generally serve as manual air release valves. Please refer to Standard Detail 10.14.00 of these Specifications for further clarification per the Standard Detail. Currently Approved Automatic Air Release Models are: AUTOMATIC AIR RELEASES MANUFACTURER MODEL # Crispin PLIO Val-Matic 38 7. SERVICE LINES MATERIALS FOR 3/4 and 1" SERVICES ONLY A. Service Line Pipe: Pipe shall be only Type K soft copper tubing. B. Service Saddles: Service saddles are covered under the Water Main Taps section of these specifications previously in Paragraph E. The following are currently approved service saddles: SERVICE SADDLES FOR 3/4" AND I" SERVICES MANUFACTURER MODEL # Double Strap (DIP) Stainless Steel Band œVC) Ford F202 FSI01 Romac 202 101S Smith Blair 313 315 AND 317 C. Corporation Stops: Corporation Stops shall be brass and comply with A WW A C-800 and shall be high pressure rated at 150 PSI in accordance with Section 3.3 of the standard. Inlet threads shall be "CC" standard A WW A Corporation valve inlet thread. All corporation stops will be installed with a service saddle no direct taps into water mains shall be allowed. 09-24 Water Main Construction Division 09 CITY OF MONROE STANDARD SPECIFIC A nONS AND DETAIL MANUAL The following manufacturers and models are currently approved: 3/4" AND I" CORPORATION STOPS MANUFACTURER MODEL # Compression (CoDPer) Flare (CoDDer) McDonald 4701T 4701 Mueller H-1500S H-15000 Ford F-I000 F -600 D. Meter Yoke Assembly: Meter yokes shall be angle type, with vertical inlet and horizontal outlet, with flared or compression cOlUlections for water service tubing. Yokes shall be equipped with a brass angle stop cutoff valve and coupling. The angle stop for 5/8" meters (3/4" services) shall be 5/8" x 3/4" with a 5/8" x 3/4" coupling for the tail piece. The yoke shall be of Cast or Ductile Iron. Horizontal type meter yokes may be used for special situations, as approved by the City Engineer. Meter yoke assemblies shall be provided for all 5/8" and 1" meters. Expansion cOlUlection between meter and yoke shall be 3 piece units by McDonald, Ford, or Mueller. The following meter yoke assemblies are currently approved: METER YOKE ASSEMBLIES MANUFACTURER MODEL # 3/4" x 5/S" Meters I" Meters Ford 502 504 McDonald 14-2 14~4 Mueller H-5010 H ~5040 The following angle meter stops and straight couplings are currently approved: . ANGLE METER STOPS AND STRAIGHT COUPLINGS MANUFACTURER MODEL # Anele StoDs Straieht CouDlines Ford A V -94323W C44~23 McDonald 4642BY -22 475ST Mueller H-14273 H-1421S 09-25 Water Main Construction Division 09 . . e e e e . e e e CITY OF MONROE ST ANDARD SPECIFICATIONS AND DETAIL MANUAL E. Meter Boxes: Meter Boxes for 5/8-inch meters (3/4-inch services) and 1- inch meters shall conform to the Standard Detail 10.08.00. The following list is currently approved models: METER BOXES MANUFACTURER MODEL # 3/4" x 5/8" 1 " Mid States Plastic MSBCF ~ 1118-12 MSBCF -1324-12 All meter boxes shall have MSP Ductile Iron Meter Box Cover with Reading Lid Grade 65-45-12 ASTM A536-80 or an approved equal. In such cases that a proposed driveway is to be located over an existing meter box, the Owner/Contractor shall replace the existing Mid-States plastic box with the following CDR Box: METER BOXES LOCATED IN DRIVEWAYS MANUFACTURER MODEL # JL£ 1.: CDR 15 x27 BOX 15 x 27 BOX F. Iriline Dual Check Valves: Dual checks shall be installed on all residential services and shall have flared or compression connections. Inline Dual check valves shall meet requirements of ASSE 1024 and CSA B64.6 approved. The following inline dual check valves are currently approved: INLINE DUAL CHECK V ALVES FOR 3/4" AND I" SERVICES MANUFACTURER MODEL # 3/4" Dual Checks I" Dual Checks Mueller H-14247-A H-14247-A McDonald Series 11-3AN-33 Series 11-3AN-44 Ford HHS-91323 HHS~91344 09-26 Water Main Construction Division 09 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL G. All 3/4" and I" meters shall be supplied and installed by the City of Monroe. 8. 1-112" AND 2" WATER SERVICES A. Service Line Pipe: All services lines 1-112" and larger shall be PVC SDR- 13.5. B. Service Saddles: Service saddles are covered under the Water Main Taps section of these specifications in Paragraph E previously. The following are currently approved service saddles: SERVICE SADDLES FOR 1-112 and 2-INCH WATER MAINS MANUFACTURER MODEL # McDonald IPS Model 3801 Mueller H-13420 Ford S-70 C. Ball Type Curb Stop: Curb Stops shall be brass and comply with A WW A C-800 and shall be lùgh pressure rated at 150 PSI in accordance with Section 3.3 of the standard. Inlet threads shall be "IPS" valve inlet thread. All corporation stops will be installed with a service saddle no direct taps into water mains shall be allowed. The following manufacturers and models are currently approved: 1-112" AND 2" BALL VALVES MANUFACTURER MODEL # 1-112" 2" McDonald 6101 6101 Mueller RI0203 HI0203 Ford B11666W B11777W 09-27 Water Main Construction Division 09 e e e e e e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL D. Meters: 1-112" and 2" meters shall conform to the Standard Detail 10.09.00. Currently approved models are listed below: METERS MANUFACTURER MODEL # 1-112" 2" Sensus W120 DR SRH Compound Hersey MVR MCT II Neptune Turbine DP Compound DP Master Meter Multi~Jet Turbine FL DB Compound E. Copper Setters: Copper Setters for 1-112" and 2" meters shall conform to the Standard Detail 10.09.00. Currently approved models are listed below: COPPER SETTERS MANUFACTURER MODEL # 1 ~ 1/2" E McDonald 20B615WWFF665 20D715WWFF775 Ford VBB7615B1166 VBB7715B1177 9. 3" AND LARGER WATER SERVICES A. Vaults: All meters 3-inch and larger shall be installed in precast concrete vaults conforming to the Standard Detail 10.10.00. Vaults shall be approved for use within North Carolina Department of Transportation right-of-way and shall be designed to withstand H20 loading. Service numbers shall be supplied by the City of Monroe and shall be bead welded on the cover. The Water Resources Engineer shall review and approve an appropriate meter to be installed at each site-specific location based on domestic and fire flow requirements and other specific characteristics of demand. 09-28 Water Main Construction Division 09 e e THIS PAGE IS INTENTIONALLY LEFT BLANK e e e e e e e e 09.02.04 Shop Drawings Materials List Necessary Materials for a Water Main Extension. (If not applicable to the specific project omit from the form) Project Name: Form Submitted By: Supplier: Address: Supplier Contact Person: Phone Number: MANUFACTURER MODEL # SIZE MA TERIALS WATER MAIN ( 4"-36" ) WATERMAlN (2") FIRE HYDRANTS RESILIENT SEAT GATE VALVE 2" HARD BODY GATE VALVE VALVE BOX CONCRETE PROTECTOR RING TAPPING SLEEVE TAPPING VALVE FITTINGS SERVICE SADDLES ( 4"-36" ) SERVICE SADDLES ( 2" ) CORPORATION STOPS SOFT K COPPER TUBING ANGLE BALL VALVE YOKE BAR EXPANSION CONNECTOR DUAL CHECK VALVE METER BOX PLASTIC COATED #12 GAUGE STRANDED COPPER WIRE ENCASEMENT PIPE RESTRAINT JOINT FITTING AIR RELEASE VALVE 2" SCHEDULE 80 BLOWOFF PIPE Approved By City of Monroe Date Water Main Materials Division 09 09-29 · e THIS PAGE IS INTENTIONALLY LEFT BLANK e e e e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 09.03 CONSTRUCTION, INSTALLATION AND TESTING OF WATER MAINS 09.03.01 HANDLING AND STORAGE OF MATERIALS The Contractor shall be responsible for the safe storage of materials furnished by or to him, and accepted by him and intended for the work, until they have been incorporated in the completed project. The interior of all pipes, fittings and other accessories shall be kept ftee of dirt and foreign materials at all times. Valves and hydrants shall be drained and stored in a manner that will protect them ÍÌ'om damage by fteezing. 1. Transportation of Materials and Equipment: The Contractor and his Suppliers are directed to contract the North Carolina Department of Transportation to verifY axle load limits on State maintained roads (and bridges) which are to be used for hauling equipment and materials to the project. The Contractor and his suppliers shall do all that is necessary to satisfy the Department of Transportation requirements and will be responsible for any damage to roads, which may be attributed to the project. All materials required for construction shall be furnished by the contractor . and shall be delivered and distributed at the site by the Contractor or his material supplier. 2. Loading/Unloading Materials: All pipe, fittings, valves, hydrants, and accessories shall be loaded and unloaded by lifting with hoists or skidding so as to avoid shock or damage. Under no circumstances shall materials be dropped. Pipe handled on skidways shall not be skidded or rolled against pipe already on the ground. 3. ResDonsibility of Materials on Site: In distributing the material at the site of the work, each piece shall be unloaded opposite or near the place where it is to be laid in the trench. Pedestrian or vehicular traffic shall not be unduly inconvenienced by materials being placed along the street right-of- way. The Contractor will string in advance no more than the amount of pipe and material that can be installed within (2) two weeks unless approved by the Water Resources Engineer. Other material may be placed in storage yards as specified below. All materials shall be placed in such a manner as to not impede any traffic. Materials strung through residential areas (or any area with maintained lawns) shall be placed in such a manner that normal lawn maintenance is not restricted and must either be installed within two (2) 09-30 Water Main Construction Division 09 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 09.03.02 weeks or removed to an approved storage yard, as required by the Water Resources Engineer. e 4. Material Equipment Storage: The Contractor will be responsible for locating and providing any required offsite storage areas for construction materials and equipment. Unless ,prior written consent fÌ'om the owner of the proposed storage area is received by Water Resources Department, the Contractor will be required to store all equipment and materials with the project site or the limits of the right-of-way provided. The materials and equipment storage shall comply with all State and Local Ordinances throughout the construction period. Material and equipment may only be stored within road right-of-way if approved by the controlling agency. e The Contractor shall be responsible for safeguarding materials and equipment against fire, theft, and vandalism and shall not hold the City responsible in any way for the occurrence ofthe same. 5. Care of Coatings and Linings: Pipe and fittings, including hydrants, shall be so handled that the coating and lining will not be damaged. If, however, any part of the coating or lining is damaged, the repair shall be made by the Contractor at his expense in a manner satisfactory to the Water Resources Engineer. e CONNECTION TO EXISTING MAINS City of Monroe Water Resources Department shall make all live taps on active water mains. Contractor shall supply tapping sleeve and tapping valve, excavation of trench, adequate traffic control and backfilling and compaction of trench. Contractor shall make application for a live tap at the City of Monroe Customer Service Department; current fees shall be assessed. Contractor shall allow a minimum of72 hours before the work order for the live tap is processed. e Valves, hydrants, blowoffs, etc. will be operated by City of Monroe personnel and/or the Contractor if specifically directed by the City Water Resources Engineer or his representative to do so. The Contractor shall provide all labor materials, and equipment required for connection to the existing system. Only one (1) connection between the existing system and the new extension will be allowed until testing, chlorination, and successful sampling of the new extension is complete. If connection to existing mains will necessitate an interruption of service, the Contractor will schedule the connection for a time that is most convenient to the affected customers as detennined by the City Water Resources Engineer. Adequate notice will be provided to those customers who will be put out of service by the connection. When such an interruption of service is approved, the e 09-31 Water Main Construction Division 09 e e e e e CITY OF MONROE STANDARD SPECIFICA nONS AND DETAIL MANUAL Contractor will have all required labor, material and equipment at the site before beginning any work and the service interruption will be kept at an abso lute nurumum. The Contractor shall verifY bloclång at existing valves prior to making connections and will be required to block, rod, or restrain existing and new pipe, fittings and valves as necessary. 09.03.03 EXISTING UTILITIES The Developer/Contractor shall be responsible for all costs associated with an adjustment or modification of existing city infrastructure that was the result of the construction of the proposed water mains or other improvements in the area. The Contractor will be required to excavate to detennine the precise location of utilities, or other underground obstructions, which are shown on the Construction Plans. Such location and excavation shall be at least 500 feet ahead of construction or as notes in the Special Provision Section oftlús document. All utility owners will be notified prior to excavation as required by the 1985 Underground Damage Prevention Act. Owners who are members of North Carolina One-Call may be notified in accordance with current North Carolina One- Call procedures. The Contractor will be fully responsible for damage to any utilities if the owners have not been properly notified as required by the Underground Damage Prevention Act. Utility owners may, at their option, have representatives present to supervise excavation in the vicinity of their utilities. The cost of such supervision, if any, shall be borne by the Contractor. Conflicts with underground utilities may necessitate changes in the alignment and/or grade of this construction. All changes will be approved by the Water Resources Engineer before the construction proceeds. When underground obstructions not shown on the Construction Plans are encountered, the Contractor shall promptly report the conflict to the Water Resources Engineer and shall not proceed with construction until the conflict is resolved by the Water Resources Engineer. When a PVC water main crosses other buried pipeline utilities (storm drain, gas , encased or capped telephone conduit, etc. ) 18-inches vertical clearance must be maintained between the water line and the utility and the water line shall receive TYPE III stone bedding. 09-32 Water Main Construction Division 09 09.03.04 09.03.05 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL WATER LINE I SEWER LINE CLEARANCE When a water main crosses or is parallel to an existing sewer main, the Contractor shall install ductile iron pipe for water main and sewer main as described below. e 1. Vertical Separation Of Water Lines and Sewer Lines: Whenever it is necessary for a water main to cross over a sewer main with less than 18-inches of vertical separation, the water main and sewer main shall be constructed of ductile iron pipe, for a distance of 10 feet on each side of he point of crossing. Whenever it is necessary for a water main to cross under a sewer main, the water main and sewer main shall be constructed of ductile iron pipe, for a distance of 10 feet on each side of the point of crossmg. e 2. Horizontal Separation Of Water Lines And Sewer Lines: Water mains shall be laid at least 10 feet horizontally fÌom existing or proposed sewer mains unless local conditions or barriers prevent a 10-foot horizontal separation. In that case, the water main will be laid in a separate trench, with the elevation of the bottom ofthe water main at least 18-inches above the top of the sewer. When these conditions are not met the water main and the sewer main shall be constructed of ductile iron pipe. e Please refer to Standard Detail 10.03.00 for further clarification. EXCA V ATlON All excavation shall be as specified below. Excavation within street rights-of-way shall be backfilled when left unattended for more than I hour unless otherwise approved by the controlling agency. 1. Trench Excavation: No more than 100 LF of trench shall be opened in advance of the pipe laying unless prior approval is given by the Water Resources Engineer. Ground conditions and/or location will be considered by the Water Resources Engineer in making this determination. e a. Trench Width: Maximum trench width for pipe shall be equal to the outside diameter (as measured at the pipe barrel) of the pipe plus (16) inches. Trench width shall be measured between faces of the cut at the top of the pipe bell. If the Contractor varies fÌom this requirement without approval of the Inspector, he shall at his own expense install TYPE II or TYPE III bedding as defined in Pipe Laying and as shown in Standard Detail 10.01.00 oftlús Section. e 09-33 Water Main Construction Division 09 e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL b. Trench Bottom Confonnation: The excavation shall be made to the elevations, grades, and lines shown on the Construction Plans. The trench bottom shall be excavated slightly above grade and cut down to the pipe grade by hand in the fine grading operation. The trench bottom shall be true and even with bell holes at each joint to provide the barrel of the pipe with soil or granular bedding support for its full length. This should prevent joint loading at the bells. If the trench bottom is inadvertently cut below grade, the Contractor shall (at his own expense) fill it to grade with an approved material thoroughly tamped, or with #67 bedding stone. Pipe depth and/or soil conditions may require TYPE II or TYPE III granular embedment. This bedding shall also be shaped at allow adequate support of the pipe. If the trench passes either under or over another pipeline or previous excavation, the trench bottom in this area shall be tamped, if necessary, so the disturbed soil has approximately the same supportive strength as the native. 2. Excavation for Structures: The excavation shall be made to the lines, grades and elevations shown on the Plans and Standard Details. The area excavated shall be limited to more than is necessary to allow the proper installation of the structure as determined by the Water Resources Engineer. The excavation shall remain open no longer than is necessary to allow the proper and complete installation of the structure. a. Structure Pit Bottom Confonnation: The pit bottom shall be true and even, and capable of supporting the structure as determined by the Water Resources Engineer. If the pit bottom is inadvertently cut below grade, the Contractor shall fill it to the proper elevation with approved material capable of continually maintaining adequate supportive strength. 3. Excavation for Bore Pits: The excavation shall be controlled by the limits of the existing right-of-way and shall not exceed these without prior written approval ofthe current property owner. The excavation shall be made to the proper elevation, line and grade to inst<rll the casing pipe as shown on the Construction Plans. The pit bottom shall be true and even with adequate stabilization to maintain proper elevation illld grade on the boring rig for the duration of the bore. The walls of the pit shall be shored or sloped to comply with OSHA requirements. The bore pit shall not be 09-34 Water Main Construction Division 09 CITY OF MONROE ST ANDARD SPECIFICATIONS AND DET AlL MANUAL left open overnight on NCDOT maintained roadways withou~ specific approval from NCDOT. If approval is obtained, concrete median barriers are required to be placed around the bore pit within the road right-of-way. e 4. Rock Excavation: Rock excavation shall be defined as solid ledge rock that requires drilling and blasting, sledging, or barring for its removal. Soft disintegrated rock that can be removed with a pick shall not be classified as solid rock. Boulders greater than one cubic yard in volume will also be considered rock excavation. Smaller boulders and soft rock, which in the opinion of the Water Resources Engineer can be excavated by the use of a power shovel, without undue delay, shall not be classified as rock. e Rock shall be removed to the following limits as measured between vertical planes twelve (12) inches outside the pipe bell parallel to the water line and for a depth of six (6) inches below the pipe bell. Rock around structures shall be removed to the same 12-inch limit as measured between vertical planes around the structure to a depth necessary to allow proper installation of the structure. Over excavation of rock due to removal methods, or for safety consideration shall be the Contractors responsibility. When rock removal is necessary for pipeline installation either TYPE II or TYPE III bedding shall be installed as specified and directed by the Water Resources Engineer. e All blasting shall be conducted in the manner as described elsewhere in these Specifications 5. Piling of Excavated Material: All excavated material shall be piled in a manner that will not endanger the work. Excavated material will be piled a safe distance away from the edge of the excavation allowing room for an adequate angle of repose and if shoring, sheeting, and bracing are used to protect the excavation, no material will be piled within three (3) feet of the nearest edge. e Sidewalks, driveways, hydrants, valve pit covers, valve boxes, curb stops boxes, existing manholes, fire and police call boxes, or other utility controls shall be unobstructed and accessible until the work is completed. Gutters, catch basins, and natural watercourses shall not be obstructed or silted. 6. Dewatering: The Contractor shall at all times provide and maintain ample means and equipment with which to remove and properly dispose of water e 09-35 Water Main Construction Division 09 e e e e e CITY OF MONROE ST ANDARD SPECIFICATIONS AND DETAIL MANUAL entering the excavation or other parts of the work and shall keep all excavations dry until such time as pipe laying and grading is complete. Water shall not be allowed to rise around the pipe in unbackfilled trenches nor shall it be allowed to rise over masonry until the concrete or mortar has set (minimum 24 hours). All water pumped or drained trom the work shall be disposed of in such a manner as to minimize siltation and erosion on adjacent property or other construction. 7. Shoring and Shieldin~: The Contractor shall comply with OSHA trenching and excavation regulations as revised in Subpart P of Part 1926 in the Federal Register. Shoring and/or shielding systems shall be used as specified in Subpart P to prevent caving of trench banks and to provide a satè excavation. The Contractor will be responsible for excavation safety and shall designate his "competent person" (as defined in Subpart P) for the determination of proper shielding and shoring systems. If, in the opinion of the Water Resources Engineer, the trench/excavation is not in compliance with OSHA regulations, the Contractor may be directed to stop work. Continued unsafe conditions will be reported to the appropriate regulatory agency. The Contractor will be responsible for paying all fines resulting trom safety violations. 09.03.06 WATER MAIN PIPE LA YINO In all instances, pipe shall be installed in a workmanlike manner and true to line and grade. The various pipes specified shall be handled and installed in accordance with the manufacturer's recommendations and good Water Resources Engineering practices. The following requirements and/or standards ofthe City of Monroe Water Resources Department shall govern the construction. Contractor shall refer to Standard Detail 10.01.00 for further clarification of pipe installation I. Pipe BeddinlZ:: Unless otherwise specified or notes on the Plans the following bedding classes are commonly required by this Department. When granular material embedment is required, the Contractor will backfill above the granular bedding as specified for Type I bedding to an elevation one (1) foot above the top of the pipe bell. a. Type I - Shaped Bottom Bedding: Shaped bottom bedding shall be such that the pipe bears unifoffiÙy upon undisturbed native earth. Soil is then backfilled by hand around the pipe and completely 09-36 Water Main Construction Division 09 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL under the pipe haunches in uniform layers not exceeding six (6) inches in depth to an elevation one (1) foot above the top of the pipe bell. e b. Type II - Granular Material Embedment: For Type II bedding, the trench bottom shall be undercut a minimum of 6 inches below the pipe barrel grade and filled with an approved stone to an elevation such that the pipe will be completely and uniformly bedded to a vertical height of one-half the outside diameter of the pipe for the pipe's entire length and the entire width of the trench. Type II enbedment shall be used as directed by the Water Resources Engineer. e c. Tvpe III - Granular Material Embedment: For Type III bedding, the trench bottom shall be undercut a minimum of six (6) inches below the pipe barrel grade. Then filled with an approved stone to an elevation such that the pipe will be completely and uniformly bedded to a vertical height 4" above the top of the pipe barrel for the entire length of the pipe and the entire width of the trench. d. Concrete Encasement and Cradles: Concrete encasement or cradles will be used only as designed for individual cases or as directed by the Water Resources Engineer and will be noted on the plans and in the Special Provisions when applicable. e e. Stone Stabilization: Stabilization stone shall be used when the trench must be undercut in excess of six (6) inches required for Type II and Type III bedding either due to excessive ground water or the existence of unsuitable material incapable of adequately supporting the pipe. 2. Depth of Water Main Pipe Installation: Unless otherwise indicated in the Plans, or required by existing utility location, all pipe will be installed with the top of the pipe at least 3.0' below the edge of adjacent roadway pavement or 3.0' below the ground at the pipe, whichever is greatest. Top of pipe shall not exceed 5.0' in bury to final grade established. The Contractor is instructed to check the construction plans and blow-up views for additional requirements. e The Contractor may be required to vary the depth of pipe to achieve minimum clearance from existing utilities while maintaining the minimum cover specified, whether or not the existing pipelines, conduits, cables, mains, etc. are shown on the Plans. e 09-37 Water Main Construction Division 09 e . e e e CITY OF MONROE ST ANDARD SPECIFICATIONS AND DETAIL MANUAL 3. Alignment: 09.03.07 a. New Subdivision Streets: The water main shall be laid in accordance with the City ofMomoe's Standard Detail for Local Residential Streets in Division 08 of this manual. b. Non-Subdivision Streets: The water main shall be laid in accordance with the construction plans. INSTALLATION AND ASSEMBLY Proper implements, tools, and facilities satisfactory to the Water Resources Engineer shall be provided and used by the Contractor for the safe and convenient prosecution of the work. All pipe, fittings, valves and hydrants shall be carefully lowered into the trench piece by piece by means of a backhoe or other suitable means, in such a manner as to prevent damage to protective coatings and linings. Under no circumstances shall water main materials be dropped or dumped into the trench. 1. 2. 3. Inspection of Materials: The pipe and fittings shall be inspected for defects. Cleaning Pipe and Fittings: All lumps, blisters and excess coatings shall be removed from the bell and spigot ends of each pipe, and the outside of the spigot and the inside of the bell shall be wire brushed and wiped clean and dry and free from oil and grease before the pipe is laid. Laving Pipe: Pipe shall be laid with bell ends facing in the direction of the laying, unless otherwise approved by the Water Resources Engineer. Every precaution shall be taken to prevent foreign material from entering the pipe while it is being installed. If the pipe laying crew cannot put the pipe into the trench and in place without getting earth into it, the Water Resources Engineer may require that before laying the pipe into the trench, a heavy tightly woven canvas bag of suitable size shall be placed over each end and left there until the connection is to be made to the adjacent pipe. During laying operations, no debris tools, clothing or other materials shall be placed in the pipe. After placing a length of pipe in the trench, the spigot end shall be centered in the bell and the pipe forced home and brought to correct line and grade. The pipe shall be secured in place with approved backfill material tamped under it except at the bells. Precautions shall be taken to prevent dirt from entering the joint space. 09-38 Water Main Construction Division 09 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL At times when pipe laying is not in progress, the open ends of the pipe shall be closed by a watertight plug or other means approved by the Water Resources Engineer. This provision shall apply during the hours as well as overnight. If water is in the trench, the seal shall remain in place until the trench is pumped completely dry. e 4. Pennissible Deflection of Joints: Whenever it is necessary to deflect pressure pipe from a straight line, either in a vertical or horizontal plane, to avoid obstruction or plumb valve stems, or where long radius curves are pennitted, the amount of deflection allowed shall not exceed that required for satisfactory sealing of the joints as recommended by the manufacturer, and shall be approved by the Water Resources Engineer. e 5. Installation of Push-On Joint Pipe: The gasket groove and bell socket shall be cleaned and lubricated, and the gasket inserted as specified by the pipe manufacturer. Sterile lubricant, as furnished or specified by the manufacturer shall be applied to the gasket and beveled spigot end of the pipe. The beveled spigot end of the pipe shall be pushed straight into the bell using either a bar, jack, lever puller, or backhoe. A timber header will be placed between the jack or backhoe bucket and the pipe to prevent damage to the pipe. At no time will the joint be made by swinging the pipe. The pipe will be deflected, if required, after the joint is made. e 6. Installing Mechanical Joint Pipe and Fittings: All spigots shall be centrally located in the bell and adequate anchorage shall be provided where abrupt change in direction and dead ends occur. All pipe surfaces with which rubber gasket seals come into contact will be brushed just prior to assembly in order to remove all loose rust or foreign material and to provide a clean surface for the installation of the gasket. The pipe surface with which the gasket comes into contact and the gasket will be brushed with soapy water just prior to installation of the gasket and the making up of the joint. Torque loads shall be applied to the standard cast iron bolts used in making the joint as follows: e BOLT SIZE. INCHES RANGE OF TORQUE. FT. POUNDS 5/8" 3/4" I" 40 - 60 60 - 90 70 - 100 90 -120 1-1/4" The preceding torque loads may be applied with torque measuring or indicating wrenches. Torque wrenches may be used to check the application of approximate torque loads applied by men trained to give an average pull of a definite length of regular socket wrench. e 09-39 Water Main Construction Division 09 e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL The following length of wrenches should satisfactorily produce the previous ranges of torque when used by the average man: BOLT SIZE. INCHES LENGTH OF WRENCH. INCHES 5/8" 3/4" I" 1-1/4" 8 10 12 14 When tightening bolts, the gland will be brought up toward the pipe flange evenly, maintaining approximately the same distance between the gland and the face of the flange at all points around the socket. 7. Bend and Fitting Location: The Contractor is advised that the bends and fittings indicated on the plans are for guide only. The Contractor will be required to furnish additional bends and fittings as needed to complete the installations. 8. Cutting Pipe: The cutting of pipe for inserting valves and fittings, or closure pieces shall be done in neat and workmanlike manner without damage to the pipe or cement lining and as to leave a smooth end at right angles to the axis of the pipe. Cut ends of a pipe shall be beveled before installation in a push-on bell joint. When making connections to existing mains which require water main to be removedffom service, automatic traveling pipe cutting machines will be require on pipe 14" and larger. At other times, hand-held pipe saws may be used provided the pipe is marked, prior to cutting, such as to provide a cut at right angles to the axis of the pipe. Handheld pipe saws may be used in all applications for cutting pipe smaller than 14". Flame cutting pipe with an acetylene torch will not be allowed. There will be no cutting of Asbestos Cement Pipe with a hand held pipe saw. Only an ax will be permitted to cut the pipe. 9. PVC Pipe Installation: PVC water main shall be installed in accordance with the Recommended Practice for the Installation ofPVC Pressure Pipe UNI-B-3 and A WW A C-900. Backfill shall be as specified elsewhere in these Specifications. Unless otherwise indicated on the Plans, or required by existing utility locations, all PVC water pipe shall be installed with a minimum cover of3.0 feet. The maximum cover shall be as previously specified. Ductile Iron Pipe shall be installed when the minimum cover is less than 3.0 feet and in all 09-40 Water Main Construction Division 09 CITY OF MONROE ST ANDARD SPECIFICATIONS AND DETAIL MANUAL crossings of other pipelines (storm drainage, gas, etc.) when vertical distance between the water main and other pipeline is less than 12 inches. e 10. Locator Wire and Tape Installation: All PVC and DIP water mains shall have both copper wire and locator tape installed as part of the installation.. Refer to Standard Detail 10.04.00 for clarification. a. Tracer Wire: A plastic coated 12-gauge stranded copper wire shall be laid on top ofthe PVC and DIP to aid in locating the pipe for maintenance purposes. This wire shall be ,secured to the pipe with duct tape near every bell and at the center of the pipe joint. The wire shall be fastened securely to a cast iron fitting at main line valve, fire hydrant and or copper service lines as directed by the Water Resources Engineer. Wire at all main line valves shall be run to top of grade outside the valve box to the two piece connection where it should then be run inside the valve box for purpose of providing the Water Resources Department a contact point to track the water main. e b. Split Bolt Connector: Split Bolt Connectors shall be used to securely fasten the wire at all fire hydrants and intersections to the main to insure continuous signal reading. e c. Locator Tape: All PVC and Ductile Iron water mains shall be installed with a non-metallic plastic blue tape. The tape shall be 3" in width, detachable with black letter clearly identifying the pipeline as water. This tape shall be buried directly over the water main installation one (1) foot below the final grade. 09.03.08 INSTALLING VALVES, HYDRANTS AND FITTINGS 1. Valves Boxes: A valve box conforming to Standard Details 10.05.00 and 10.06.00, shall be installed for every gate valve. The valve box shall not transmit shock or stress to the valve and shall be centered and plumb over the operating nut, with the box cover flush with the surface of the pavement or other existing surfaces. e Where the box is not set in pavement, the top section shall be anchored by an 18" x 18" x 6" concrete pad, or an approved pre-cast concrete pad, set flush with the existing terrain. The location of valves will be identified by the letter "V" imprinted into the curb or in A. C. pavement adjacent to the mainline or hydrant valve. e 09-41 Water Main Construction Division 09 e . e e e CITY OF MONROE ST ANDARD SPECIFICATIONS AND DETAIL MANUAL 2. Valve Blocking: All valves 12-inches and smaller installed on PYC and DIP water mains shall be securely blocked with concrete bearing below the valve as shown in Standard Detail 10.02.00. Care shall be taken in fonning and pouring the blocking so the fitting joints will be accessible for repair and/or valve extraction. 3. Fire Hydrants: Hydrants shall be set with no less than three (3) foot bury on water mains 12" and smaller and with four (4) foot or more for water mains 16" and larger. Because of varying topography, extensions, and/or hydrants with greater bury may be required. Hydrant Extensions shall be :lÌom the same hydrant manufacturer. All hydrants and hydrant guards will be installed plumb and in accordance with Standard Detail 10.07.00. The appropriate plan view will be noted on the Plans or in the Special Provisions. Each hydrant installation will include a drainage bed of clean washed stone approximately 1 cubic foot in size at the "weep hole". Piping from the main to the hydrant shall be 6" DIP. The hydrant shall be restrained either by use of Mega Lug fittings or by threaded rod. Hydrant shall also be thrust blocked per Standard Detail 10.07.00. 4. Blocking Fittings: All plugs, caps, tees and bends deflecting 11-1/4 degree or more on pressure mains 2" diameter and larger shall be provided with thrust blocking, placed as shown on the Plans and/or as directed by the Water Resources Engineer, and consisting of ready mix concrete having a compressive strength of not less than 3,600 pounds per inch at 28 days. Contractor shall refer to Standard Detail 10.02.00 for further clarification. Bagged mix concrete may be used for blocking, anchorage, concrete valve pads, etc. on water mains and valves 12-inches in diameter and smaller, when less than 1/2 yard is required. Blocking shall be placed between solid ground and the fittings to be anchored. The area bearing on the pipe and the ground in each instance shall be that shown or directed by the Water Resources Engineer. The blocking shall be placed so that the pipe and fittings will be accessible for reparr . 5. Restrained Joints: Restrained joints shall be installed where shown on the Plans, standard details or when approved by the Water Resources Engineer, and may be installed in lieu of blocking. Installation shall be per manufacturer's recommendations, as shown on the plans, Special Provisions and/or as directed by the Water Resources Engineer. Restrained joints will not be allowed on PYC pipe. 09-42 Water Main Construction Division 09 09.03.09 09.03.10 CITY OF MONROE ST ANDARD SPECIFICATIONS AND DETAIL MANUAL WATER MAIN TAPS City of Monroe Water Resources Department shall make all live taps on active. water mains. Contractor shall supply tapping sleeve and tapping valve, excavation of trench, adequate traffic control and backfilling and compaction of trench. Contractor shall make application for a live tap at City of Monroe Customer Service Department; current fees shall be assessed. Contractor shall allow a minimum of 72 hours before the work order for the City of Monroe for the live tap is processed. e 3/4" AND 1" SERVICE CONNECTIONS e Service lines will be installed perpendicular to the water main and shall, unless otherwise approved terminate at the brass pipe after the meter box. All taps will be made substantially as shown on Standard Detail 10.08.00. Service lines will be installed with a :minimum depth of cover of20-inches and a maximum depth of cover of 30-inches. Service cOnrIections must be installed prior to pressure testing and sterilization. Allowance for the joints in service cOnrIections will be included when computing the allowable leakage. The Contractor shall flush each connection after testing and sterilization is complete. e 1. All meters shall be supplied and installed by the City of Monroe Water Resources Department. 2. Contractor shall use one continuous roll of copper from tap to the meter. No splicing will be perrtritted. 3. Contractor shall extend copper tubing after the meter box 2 feet beyond the proposed sidewalks in subdivisions on customer side. In subdivisions, Contractor shall take care to locate all meter boxes away from proposed driveways, sidewalks and low lying areas subject to surface runoff. In such case that a proposed driveway is to be located over an existing meter box, the Owner/Contractor shall replace the existing Mid-States Plastic with a CDR 15 x 27 Meter Box as specified under Water Main Materials Section of these Specifications. In new streets, piping beneath pavement on the "long side" connections will be installed prior to paving. Backfill shall be compacted as specified with extreme care taken to prevent damage to the copper piping. e e 09-43 Water Main Construction Division 09 e e e e e 09.03.11 09.03.12 09.03.13 CITY OF MONROE ST ANDARD SPECIFICATIONS AND DETAIL MANUAL 1-1/2" AND 2" SERVICE CONNECTIONS For 1-1/2" and 2" service cOlU1ections off of new unpressurized water mains the Contractor shall perform the installation as directed by Water Resources Engineer and in accordance with the Standard Detail 10.09.00. 3" AND LARGER SERVICE CONNECTIONS For 3" and larger service connections off of new unpressurized water mains the Contractor shall perform the installation as directed by Water Resources Engineer and in accordance with the Standard Detail 10.10.00. BACKFILL All backfill shall be of a non-plastic nature soil, rree fÌ'om roots, vegetative matter, waste, construction material, or other objectionable material, including but not limited to rock larger than 8" in diameter. Rock shall not exceed 10% of the fill material, and shall not be placed within 2-feet of finished grade. Backfill material shall be capable of being tamped by mechanical tamps using relatively low velocity and heavy blows. The material shall have no tendency to flow or behave in a plastic manner under the tamping blows. Material deemed by the Water Resources Engineer as unsuitable for backfill shall be removed ttom the job site before backfilling operations begin. 1. Replacement Of Wet Or Unsuitable Material: When the Water Resources Engineer determines that the material excavated from the trench is unsuitable for backfill because of material type or because it contains excessive debris, rock, organics, it shall be removed ITom the project and replaced with a backfill material approved by the Water Resources Engineer. When moisture content of an otherwise suitable material is too high to achieve specified compaction, as detennined by a moisture content and density test; the Contractor shall replace the material as necessary to meet backfill requirements. The wet material may be dried to optimum moisture content and used for backfill in subsequent phases of the project. Should an otherwise suitable material be found to dry to achieve compaction requirements, water may be added to the material to raise the moisture content to optimum. Borrow material placed at the direction of the Water Resources Engineer shall be clean earth at optimum moisture content, concord (Pit) gravel or ABC Stone. 2. Backfilling of Trenches: Trenches shall be backfilled immediately after the pipe is laid. Backfill around pipe to an elevation of one (1) foot above the pipe bell shall be done only by hand and in layers not exceeding six (6) 09-44 Water Main Construction Division 09 CITY OF MONROE ST ANDARD SPECIFICATIONS AND DETAIL MANUAL inches with every layer thoroughly tamped. Successive layers of backfill shall be compacted in place as specified below. e Should water rise in an unbackfilled ditch after the pipe has been placed, the Water Resources Engineer may require the Contractor to remove the pipe, muck the trench and relay the pipe using Type II or Type III granular bedding. a. Backfill of trenches within water main rights-of-way: Trenches excavated outside existing roadway and railway rights-of-way shall be backfilled, above the initial one (1) foot, by mechanical means in layers up to twelve (12) inches thick, unless otherwise approved. e b. Backfill oftrenches within road and railway rights-of-way: Trenches excavated within existing road and railway rights-of-way shall be backfilled in layers not to exceed six (6) inches and each layer shall be thoroughly tamped. 09.03.14 COMP ACTION REQUIREMENTS When installing proposed water main in a City of Monroe Subdivision, the compaction requirement of the City of Monroe Engineering Department shall supersede all requirements listed below. e Compaction for pipeline arid structure excavations shall be obtained by the use of mechanical tamps. Each layer of backfill shall be placed loose and thoroughly compacted in place. Heavy rollers, vehicles or other equipment shall not be used for compacting backfill nor allowed to cross over completed work except at points adjudged capable of adequately protecting the pipeline. Pneumatic tamps, ram tamps or vibrating tamps with sheepsfoot rollers will be required to meet specifications of "Mechanical Tamp". - 1. Pipeline Compaction: Trenches excavated outside existing road and railway rights-of-way shall be backfilled as specified above and tamped thoroughly: a. All material shall have an in place density of at least 95% of maximum density or as directed by the Water Resources Engineer. b. Should any public or private roadway, service road, drive, etc. be encountered during construction, the Contractor shall at the Water Resources Engineer's direction comply with the compaction requirements specified below for work within road and railway rights-of-way. . 09-45 Water Main Construction Division 09 e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 2. Compaction With Road and Railway Ri~hts-Of-Way: Trenches excavated within existing road and railway rights-of-way, and all structure excavation regardless of location, shall be backfilled as previously specified and thoroughly tamped: a. Unless otherwise required by the controlling agency, all material rrom the bottom of the trench to with six (6) inches of the subgrade shall have an in place density of95% of the maximum dry density as defined by a standard proctor curve for the material. b. All material with six (6) inches ofthe subgrade level shall have an in place density of 100% of the maximum dry density. c. On roadway shoulders, all material shall have an in place density of 95% of maximum dry density. 3. Compaction Testing: Moisture content and density testing of backfill will be performed by a duly appointed agency ofthe City of Monroe. Test will be performed with all street, highway and railway rights-of-way to insure that the specified compaction requirements are met. The Contractor will cooperate fully with the soils technicians in providing access to backfill at any requested depth for the purpose of performing moisture content/density testing. When requested, the Contractor shall excavate a backfilled ditch to any specified depth for a compaction test and shall insure that the ditch meets all OSHA safety standards before the technician enters to perform the test. A "standard proctor curve" which establishes the relationship between moisture content and dry density for soil will be determined by the method described in ASTM D-98 or by AASHTO Method T-99. Field density tests will be performed using either the sand cone method or anuclear moisture/density gauge. Any backfill which does meet the specified compaction will be re-tamped, or removed and replaced as approved by the Water Resources Engineer. 09.03.15 REMOVAL AND RESTORATION FOR PAVEMENT AND ROAD SURFACES All removal and restoration of pavement and road surfaces requirements shall be in accordance with the specifications approved by the Director of Engineering, for the City of Monroe or the North Carolina Department of Transportation and Safety, Division of highways whichever applies. 09-46 Water Main Construction Division 09 CITY OF MONROE ST ANDARD SPECIFICATIONS AND DETAIL MANUAL All restored bituminous and concrete pavements shall be placed to existing cross- section and ride quality. Restored pavement will in all instances be flush and level with existing pavement at the sawed edges, and at existing gutter lines where applicable unless otherwise approved by the Water Resources Engineer. When pavement repairs do not meet the above criteria or are not perfonned in a workmanship manner as determined by the Water Resources Engineer, Director of Engineering, or North Carolina Department of Transportation, whichever applies, the Contractor will remove and re-perfonn the restoration as specified. e Pavement will be replaced as follows. In all pavement cuts either the permanent pavement of the temporary pavement consisting of 1-112" of black asphaltic concrete (later to be replaced permanently) will be placed immediately upon completion of the subgrade unless otherwise approved by the Water Resources Engineer. e 1. Specifications for Cutting Pavement: Unless otherwise approved or required, concrete pavement shall be removed to the nearest expansion or contraction joint. The Contractor will contact the Director of Engineering or NCDOT' District Engineer for a determination of the limits of concrete replacement and location of joints. Where sawed joints are allowed, the depth of the sawed cut shall be at least one (1) inch and shall extend at least 1/5 of the depth ofthe concrete. More depth may be required if necessary to prevent damage to the surrounding pavement. e Bituminous pavement shall be cut in smooth and straight line. Sawing is required on asphaltic concrete. The width of pavement left between the edge of the ditch and the existing edge of pavement or the ftontline of the gutter, shall be at least 2 feet. Residual strips of pavement less than 2 feet in width must be removed and replaced. Existing pavement shall be removed on each side of the trench at least 12 inches beyond the top of the trench. The Contractor shall remove and replace pavement which in the opinion of the Water Resources Engineer, has been cracked or displaced by the operation of the Contractor. e 2. Specification for Restoring Concrete Pavement: The concrete used to restore pavement shall have a minimum 28 day compressive strength of 3600 PSI. The concrete as placed shall conform to the shape, grade, and finish of the existing pavement and will be one (1) inch deeper than the original pavement induding base, but in no instance less than six (6) inches. 3. Specifications For Restorina Asphalt Pavement: All material above the sub-base level shall be hot mix bituminous concrete forming to North e 09-47 Water Main Construction Division 09 e . e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 09.03.16 2. Carolina Department of Transportation Standard Specifications for Roads and Structures for both mix design and placement. The asphalt pavement as placed shall be one (1) in deeper than the original pavement including base, but in no instance less than six (6) inches within City maintained roadways or (8) inches within State maintained roadways. The asphalt shall be placed in lifts not greater than 4 inches and shall be hot mix bituminous concrete binder Type H. The last two (2) inches in either instance shall be bituminous plant mix 1-2 suitable to the appropriate controlling agency. 1-2 asphalt pavement resurfacing will be placed with paving machines and/or rollers of a size and type currently approved by the North Carolina Department of Transportation for use on resurfacing contracts. If a bituminous surfacing overlays a concrete base, the Contractor, at the option of the Water Resources Engineer, shall replace the concrete to its original thickness, or to a level 2 inches below the finished surface. The Water Resources Engineer may direct the Contractor to omit all concrete and to replace the pavement with bituminous materials. Tack coats shall be employed with each lift. Tack coats shall be placed on both horizontal and vertical surfaces (pavement cuts or face of concrete gutters). Under normal conditions, asphalt binder will be placed in pavement cuts at the end of each workday. 1-2 shall be replaced weekly or within five days following completion of pipeline construction along a continuous section of pavement. During inclement weather, the Engineer may permit the use of temporary asphalt (cold mix) to seal the trench until permanent asphalt can be placed. CONCRETE CONSTRUCTION 1. Acceptance of Concrete: ConCrete shall be accepted on the basis of its meeting the requirements listed under Material Specifications and Detail Specifications Section of this contract. The inspector will accept no ready mix concrete without the plant dispatch ticket. The Water Resources Engineer shall make or require any tests that he deems necessary to insure that the concrete meets specifications. The Water Resources Engineer may require the tests to be performed by an independent testing laboratory at the Contractor's expense. Placement: Concrete will not be accepted if it can not be placed within (90) minutes of dispatch time. Time requirements may fluctuate marginally due to temperature. Concrete shall be deposited in such a 09-48 Water Main Construction Division 09 CITY OF MONROE ST ANDARD SPECIFICATIONS AND DETAIL MANUAL manner so as to prevent contamination by foreign material and segregation due to rehandling or flowing. Segregated concrete and/or concrete containing foreign material will not be accepted. Depositing will not be permitted when temperature has not exceeded 35 degrees and rising by 10:00 AM. Depositing shall cease when the descending air temperature in the shade falls below 40 degrees. It shall not resume until the ascending air temperature rises to 35 degrees. All concrete shall be kept from freezing by the Contractor. Frozen concrete shall be replaced at the Contractor's expense. Free fall shall not exceed 3 feet in any case. e 3. Fonns: Fonns may be made of wood, plywood, metal or any other material approved by the Water Resources Engineer. Fonns shall be mortar tight, of material strong enough to resist noticeable deflection or bulging between supports, and the interior dimensions shown on the plans. The design of the fonns shall take into account the effect of vibration of concrete as it is placed and also the rate of speed at which forms will be filled. Fonns shall be coated with a lubricant as approved by the Water Resources Engineer. Mechanical vibrators, of an approved type, and continuous spading and/or roding of concrete shall be used to produce proper contact of concrete with fonns and reinforcing steel in piers and with fonns and pipe in monolithic inverts insuring a compact, dense and impervious artificial stone of uniform texture. e e 4. Curing: All concrete will be cured for a seven (7) day period after placement according to the following procedure. a. Fonns will normally be left for the entire (7) day period. Exposed surfaces not covered by fonns will be kept moist continuously for the entire seven day period or will be cured through use of an approved curing compound which will be applied after all surface water has disappeared. b. At the discretion of the Engineer, fonns may be removed afterthe initial set and before the end of the seven day period. In such cases, the areas previously covered by fonns shall be cured as described above. e c. . The Engineer may permit backfill of certain structures (e.g. concrete piers) before the end of the curing period. In such cases, the fonns shall be stripped and the surfaces that remain exposed after backfill shall be cured as described in (a) above. Curing compound shall not be required for backfilled surfaces except where specified by the plans or Special Provisions. e 09-49 Water Main Construction Division 09 · e e e e CITY OF MONROE ST ANDARD SPECIFICATIONS AND DETAIL MANUAL 5. Finishing: The structure shall have unifonTI and textured surface. All fOnTI marks exposed to view shall be rubbed off with a stone. 6. Testing: The following tests may be perfonTIed to ensure the concrete quality: a. Compressive strength in accordance with ASTM C-31 and ASTM C-39. Test cylinders which are fOffiled in the field will be left in the field until compression testing (7 day, 14 day, 28 day) is completed thereby more closely approximating the curing conditions of the field placed concrete. b. Slump test in accordance with ASTM C-143 c. Air Content Test in accordance with either ASTM C-173 or ASTM C-231. 09.03.17 DRY BORE WITH STEEL ENCASEMENT Unless otherwise shown on the construction plans, casing pipe installed under State and/or City maintained roadways shall not require a protective coating. Casing pipe installed within Railroad rights-of-way may required a coal tar primer coat, followed by a single application of hot coal tar enamel 3/32 inches thick plus a bonded 15 pound felt wrap approved by the Engineer. Unless prohibited by the railroad, non-coated pipe may be used ifand only if the wall thickness specified is increase to the next thicker standard size, or a minimum of 0.0063 inches thicker than standard. 1. Bore Pits: Bore pits shall be safed-up, shored, well marked, lighted, and not left unattended except as approved by the Engineer. Requirements for stabilization and dewatering of bore pits shall be as specified earlier. 2. Installation: Smooth wall pipe may be jacked through dry bored slightly larger than the pipe, bored progressively ahead ofthe leading edge of the advancing pipe as spoil is mucked by the auger back through the pipe. As the dry boring operation progresses, each new section of encasement pipe shall be butt welded to the section previously jacked into place. Continuous checks shall be made as to the elevation, grade and aligIll11ent of each successive section of encasement as well as the tracks (rails) upon which the boring rig travels. Ifvoids are encountered or occur outside the encasement pipe, grout holes shall be installed in the top section of the encasement pipe at ten (10) foot 09-50 Water Main Construction Division 09 CITY OF MONROE ST ANDARD SPECIFICATIONS AND DETAIL MANUAL centers and the voids filled with 1:3 Portland Cement grout at sufficient pressure to prevent settlement in the roadway/ railway. e Boring operations shall be continuous to their completion, and lUlllecessary or prolonged stoppages shall not be allowed. In the event an obstruction is encountered during the boring and jacking operations, the auger is to be withdrawn and the excess pipe is to be cut off, capped, and filled with 1:3 Portland Cement Grout at sufficient pressure to fill all voids before reapplying to the Controlling Agency for permission to open cut, bore at an alternate location, or install a tunnel. Installation shall be to the limits specified by the Controlling Agency and/or as delineated in their encroachment issued to the City. (Copy of the encroachment agreement must be kept at the site throughout boring operations). e The completed casing installation shall be such as to prevent the formation of a waterway under the road or railbed. The Controlling Agency shall have full authority to require remedial measures and/or to stop all work if, in its opinion, said work will cause any damage to the roadway/railway section or endanger traffic. In all instances the Controlling Agencies reserve the right to sample, test, and approve all materials and methods used. The Contractor shall notify the Controlling Agency through the Construction Engineer and acknowledgment shall be received a minimum of five (5) working days prior to beginning any work with roadway or railway rights-of-way. Ifrequired, 24 hours notice will be given prior to completion. e 09.03.18 BLASTING e Prior to commencing any blasting operations the Contractor shall notify the City of Monroe Public Safety Department at 282-4700 and obtain blasting pennits as required. The Contractor must furnish certification ofInsurance specifically covering any and all obligations assumed pursuant to the use of explosives. Ail blasting operations shall be conducted in strict accordance with any and all decrees, rules, regulations, ordinances, and laws as may be imposed by any regulatory body and/or agency having jurisdiction over the work relative to handling, transporting, use and storage of explosives. Blasting shall be done only by competent and experienced personnel whose activities shall be conducted in a workmanlike marmer. Satisfactory information must be provided to the Engineer e 09-51 Water Main Construction Division 09 e e e e e CITY OF MONROE ST ANDARD SPECIFICATIONS AND DETAIL MANUAL that the blaster meets or exceeds the qualifications enumerated in OSHA Regulations Part 1926, Subpart U, Section 1926.901 - Blaster Qualifications All rock dirt and debris from blasting shall be contained within the excavation by use of weighted mats or undisturbed overburden. The Contractor's blaster shall be fully responsible for determining the method of containment and the weight, size and placement of material required to contain the charge he is using. Charges shall be sized such that no damage to houses, structures, utilities, roadways etc. outside the limits of excavation will occur. Where there is a possibility of such damage, the charge will initially be set at very low level and increased in small increments until the proper charge is determined. The Contractor shall be held responsible for any and all injury to persons or damage to public or private property. 1. Permission To Blast: The Contractor shall not be allowed to blast within any rights-of-way maintained by any agency (NCDOT, R.R. Gas etc.) other than the City without specific approval of the controlling agency and only in accordance with their respective requirements. 2. Pre-Blast Survey: The Contractor shall be responsible for conducting a pre-blast survey before any detonation of dynamite for the purposes of sewer main construction. The City of Monroe shall be held hannlessfor any damage to structures or foundations caused by blasting. If blasting is conducted within 300 feet of any structure, the contractor shall be required to obtain a detailed pre-bast survey conducted by a 3rd party firm actively engaged in such work. Pre-blast survey shall include the following a. Survey shall include video of structures exterior walls and foundation. b. Calibration of the seismograph units used on every blast by a 3rd party to insure accuracy of the recording. c. Water samples of any wells within 300 feet of the blast location. 09.03.19 HYDROSTATIC AND LEAKAGE TESTING 1. City Of Monroe Water Pressures Zones: All new installed water main piping, valves, fittings, and other appurtenances shall have a minimum working pressure rating of200 PSI. Working pressure rating is the pressure rating assigned by the appropriate A WW A standard and represents the highest sustained hydrostatic water pressure of the materials in a water system. As required by the appropriate A WW A standard, all 09-52 Water Main Construction Division 09 CITY OF MONROE ST ANDARD SPECIFICATIONS AND DETAIL MANUAL pipe, valves, appurtenances, and fittings are required to withstand significantly higher sudden "hammer" pressures which can occur during operation. - 2. Testing Procedures: Following the completion of construction of a new water main section, including completion of all joints, fittings, reaction blocking, and valves and hydrants, but prior to the connection of the new section to the City's existing water distribution system, testing and inspection shall be perfonned as provided herein. Required testing and inspection shall be performed only under the continuous and direct observation of the City's Project Inspector. Testing shall include hydrostatic and leakage testing. Prior to beginning any testing, the Contractor shall have made available to the Project Inspector for inspection all valve locations, hydrants, blow-off and sampling points, the control point, and the Contractor's test equipment. The control point is defined as the point where water for line filling, boosting pressure, flushing, and clùorinating is introduced into the new main section. e Gauge pressure and water leakage will be measured by devices furnished and calibrated by the City. The Contractor shall furnish all other equipment required for testing. Equipment shall be clean and suitable for contact with potable water. e 3. Hydrostatic Tests: Test pressure shall be 200 PSI. The test pressure shall be applied during the hydrostatic test at the highest point in the new section. At no point along the test section shall pressures during the test exceed the allowable pressure of the pipe or fittings installed at that location. The max.imwn length of section tested at one time shall be 3,000 feet with section end points defined at main line valve locations or blow- offs. e a. The new section shall be filled with water furnished by and under the direction of the City from the existing water system through the control point, with the flushing rate achieving a minimwn velocity of2.5 feet per second through the main. Before applying the test pressure, air shall be expelled completely :&om the pipe, valves, and hydrants. Ifhydrants or blow-offs are not located at each high point, the Contractor shall install a corporation stop valve at such points for air release. Hydrants and valves shall be operated to insure air is not trapped within these fittings. After all air has been expelled, all hydrants, corporation stops, and blow-off valves shall be closed for the hydrostatic test. At no time shall the Contractor operate the valves unless under the direct supervision of an - 09-53 Water Main Construction Division 09 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL authorized representative of the City of Monroe Water resources e Department. b. All concrete reaction blocking on the test section shall have cured in-place a minimum of five (5) days before test pressure is applied. Concrete pipe shall have been filled with water at least 36 hours before the hydrostatic test. c. The control point assembly shall be approved by the Water Resources Department and include sufficient back:t1ow protection from the existing system before test pressure is applied, and such measures shall be maintained until the sterilization of the new section is completed with approved test results. e d. Test pressure shall be applied and maintained as the test section is inspected for visible leaks. Any defects observed shall be corrected after pressure is released and then the hydrostatic test shall be repeated. 4. Leakage Tests: Provided no visible defects are observed after test pressure is applied, a leakage test shall be performed. The leakage test shall be conducted for a minimum period of two (2) hours while line pressure is maintained in the test section continuously within 5 PSI of the pressure at the beginning of the test. e a. Leakage shall be defined as the metered quantity of water added to the test section in order to maintain pressure within 5 PSI of the test pressure during the leakage test period. b. Allowable leakage shall be calculated :ITom the following Table by adjusting the value in the table for the actual length of pipe tested and duration of the test at the pipe size and test pressure found. e Allowable Leakage Per 1000 ft of Pipeline in GallonslHour e Test Nominal Pipe Diameter - in Pressure PSI 2 4 6 8 10 12 14 16 18 20 24 30 36 250 .24 .47 .71 .95 1.19 1.42 1.66 1.91 2.14 2.37 2.85 3.56 4.27 225 .23 .45 .68 .90 1.13 1.35 1.58 1.80 2.03 2.25 2.70 3.38 4.05 200 .21 .43 .64 .85 1.06 1.28 1.48 1.70 1.91 2.12 2.55 3.19 3.82 175 .20 .40 .59 .80 .99 1.19 1.39 1.59 1.79 1.98 2.38 2.98 3.58 150 .18 .37 .55 .74 .92 1.10 1.29 1.47 1.66 1.84 2.21 2.76 3.31 09-54 Water Main Construction Division 09 CITY OF MONROE 09.03.20 STANDARD SPECIFICATIONS AND DETAIL MANUAL c. The leakage test shall be approved provided that the actual leakage is less than the allowable leakage at the completion of the test, and provided no visible leaks were found during the test. All visible leaks shall be repaired. If the leakage test fails, the Contractor shall locate and repair defective areas and repeat the test until satisfactory results are achieved. e 5. Hydrostatic Testing of New Intermediate Valves: Following the approval of the leakage test, with test pressure maintained in the new section, each intermediate main line and hydrant branch valve which remained open during the initial hydrostatic test and leakage test shall be closed one-at-a- time, beginning with the furthest valve from the control point. As each valve is closed, pressure on the backside of the valve shall be released by opening blow-off's at the end of the system and each valve previously tested. The test pressure shall be maintained in the new system on the side of the valve facing the control point as it is tested in the closed position. Ten minutes shall be allowed for each valve tested within which period the pressure shall not drop by greater than 5 PSI. This test shall be repeated until successful, and the Contractor shall make any repairs required at his expense. e 6. Water Use: Water use and the City's labor costs for observing excessive retests (3 or more) may be billed to the Contractor at the City's standard water rates and actual labor and overhead costs. e 7. Pressure Relief: Except during the specific period when tests are being conducted on the new main under the on-site observation and concurrence of the City's Project Inspector, the new main shall be relieved to atmospheric pressure at the end of the blow-off or hydrant located at the highest point in the section being tested and then this blow-off valve and/or hydrant closed. The high point shall be carefully selected to insure that air pockets are not reformed in the test section. e DISINFECTION AND BACTERIOLOGICAL TESTING OF MAINS Following the completion of testing and inspection with satisfactory results on a new water main section, but prior to the acceptance of the new section to the City's existing water distribution system, disinfection shall be performed as provided herein. Required disinfection procedures shall be performed only under the continuous and direct observation and approval of the City's Project Inspector. Prior to the beginning of disinfection, the new water main section shall be filled with water and flushed thoroughly with all air expelled as specified under Paragraph R.3.a, for Pressure and Leakage Testing. Ifair has reentered the new e 09-55 Water Main Construction Division 09 e e e e e CITY OF MONROE ST ANDARD SPECIFICA nONS AND DETAIL MANUAL section since completion ofthe testing, the procedure for expelling shall be repeated. The maximum length of section tested at one time shall be 3,000 feet with section end points defmed at main line valve locations or blow-offs. 1. Clùorine Feed Equipment: Gauge pressure and residual clùorine field test equipment will be measured by devices furnished and calibrated by the City. The Contractor shall furnish all other equipment required for disinfection. Equipment shall be clean and suitable for contact with potable water. 2. Chlorine Solution Feed: A chlorine solution shall be unifonnly introduced into the new main under the direct observation and control of the City's Project Inspector until there is a uniform concentration with a fÌ'ee residual of greater than 50 mg/l cWorine. The main shall be sampled at regular intervals by the Project Inspector along the length being disinfected to insure the appropriate minimum residual is maintained. Once the new main is unifonnly clùorinated at proper concentration as confirmed by the Project Inspector, the chlorinated solution shall be retained in the system for at least 24 hours, during which time all intermediate valves and hydrants shall be operated several times to insure disinfection of these appurtenances. At the end of the 24 hour period, the retained solution in all portions of the main shall have a fÌ'ee chlorine residual of not less than 10 mg/I. 3. Flushilllz: At the end ofthe sterilization period (24 or more hours), the cWorine solution shall be thorouglùy flushed fÌ'om the new main. Flushing shall continue until the residual chlorine measured by the Project Inspector at all end points of the disinfected new main is approximately the same as the residual in the existing main fÌ'om which the flushing water was provided. Disposal ofthe chlorinated solution flushed fÌ'om the new main shall be in accordance with all federal, state, and local regulations. Where sanitary sewer is available nearby, the chlorinated solution shall be discharged to the sanitary sewer in a manner that which maintains a positive air gap to prevent back siphonage. Disposal directly to surface waters may require is strictly prohibited. 4. Bacteriolo£!ical Sampling: After adequate :flushing ofthe chlorinated solution, the new main shall be isolated by closing all valves for another 24 hour minimum period, after which samples fÌ'om all end points shall be collected by the City ofMomoe and analyzed for bacteriological quality in accordance with Standard Methods for the Examination of Water and Wastewater at the City ofMomoe Water Treatment Plant laboratory or 09-56 Water Main Construction Division 09 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL other approved State certified laboratory. Results of the testing shall be certified and reviewed by the Water Resources Engineer. The new main shall not be approved for active service as an extension of the City distribution system until satisfactory bacteriological results are achieved. If the bacteriological tests fail to produce satisfactory results, the new main shall be reflushed and resampled by the same procedures. If tests fail again, the new main shall be redisinfected by the same procedures until successful results are obtained. The City mat, at its sole discretion require physical cleaning (Pigging) of the new pipeline at the Contractors expense, if a test fails two or more times. e Water use and the City's labor costs for observing retests may be billed to the Contractor at the City's standard water rates and actual labor and overhead costs. e 09.03.21 SEPARATION OF CONSTRUCTED MAINS FROM EXISTING MAINS The City's Project Inspector shall provide for the separation between the existing City distribution system and the new main sections during construction, testing, and disinfection of the new main sections. Tampering with appurtenances designated by the City to maintain this separation by unauthorized personnel is strictly prohibited by the Monroe City Code of Ordinances. Such tampering is a misdemeanor offense and may be prosecuted by the City of Monroe in a manner deemed appropriate by the City Attorney. e 09.03.22 REP AIRS The Contractor shall make any needed repairs to newly installed unactivated mains. Repairs to existing and/or activated mains will be made by the City of Monroe Water Resources Department unless specifically directed otherwise by the Water Reso urces Engineer. e 1. Repairs To New Mains: Repairs shall be made by cutting out and removing the damaged/defective section and replacing those with new pipe using long pattern solid sleeves to connect plain ends. Bell Clamps will not be allowed to repair newly installed water mains. 2. Repairs To Existing Mains: The Contractor will not be allowed to repair existing mains unless specifically directed by the Water Resources Engineer, or specified elsewhere in these specifications. Repair methods will be considered on a case by case basis. . 09-57 Water Main Construction Division 09 e e e e e CITY OF MONROE ST ANDARD SPECIFICA nONS AND DET AlL MANUAL 09.03.23 RESTORATION All surfaces and structures (both public and private) within and adjacent to construction operations shall be restored to a condition comparable to that existing prior to construction or as specified in the Special Provisions. All surplus materials shall be disposed of in a manner acceptable to the Water Resources Engineer, and the construction area shall be left in a neat condition, with special attention called to proper drainage, smoothness of surface, and general clean-up. No machinery or equipment shall be left or stored on the job site after the project is completed. Unless otherwise specified, complete restoration to include fertilizing, seeding and mulching of any and all areas and all areas disturbed during construction shall be completed within thirty (30) days following the initial ground disturbing activity. 1. Water meters, valve boxes, drain pipes, and other structures encountered shall be reset or re-laid to match or clear surface grade and/or water main pipe grade as applicable. 2. All shoulder areas shall be restored, stabilized and maintained to their original condition. Concrete, asphalt, gravel, and dirt walks, drives and roadways are to be replaced to their original shape and serviceability. Unless otherwise approved by the Water Resources Engineer, all areas (shoulders, side streets, drive, parking areas, etc.) which exhibit a gravel surface at the time of construction will be re-graveled with a minimum depth of six (6) inches ofCABC stone compacted in place for the width and length of the disturbed area and then feathered gradually into the existing cross section. When a driveway is finished with other than CABC stone, a one·inch finish coating to match existing gravel gradation and appearance shall be placed. The Contractor should note all existing side streets and drives, which are either dirt or gravel and will be restored as specified for graveled areas. 3. Refuse Burial: The Contractor shall not bury rock, broken concrete/asphalt, construction material, timber, etc. within street or water main right-of-way. 4. Rip-Rap: The Contractor shall place stone rip-rap as specified in those areas subject to severe water action where directed by the Water Resources Engineer. Placement of rip-rap as shown on the Construction Plans shall be considered a guide only, with final determination made at the time of 09-58 Water Main Construction Division 09 CITY OF MONROE ST ANDARD SPECIFICATIONS AND DETAIL MANUAL construction by the Engineer. Either the addition or deletion of quantities may be required. e Stone rip-rap will be installed no steeper than a 2: 1 slope except when specifically approved by the Water Resources Engineer. Grading will be required as necessary to insure continuous even flow. The rip-rap installation shall include all earthwork necessary to stabilize the creek bank and to provide cover for the water line. 5. Jute NettinglErosion Blanket: The Contractor shall install jute netting or Erosion Control Blanket in areas subject to high runoff velocities, areas subject to concentrated runoff and on steep slopes as shown on the plans and/or as directed by the Water Resources Engineer. e 6. Fertilizing Seeding and Mulching: Established lawns and landscaped areas damaged by construction shall be restored to their former condition by seeding, unless the type and condition of the existing sod warrants it being cut removed, preserved and replaced. All areas, regardless of previous condition, damaged by construction shall be fertilized, seeded, and mulched as outlined below: e a. Seed Bed Preparation: The seed bed shall be prepared by pulverizing the soil in an approved manner to a depth of three (3) inches for field conditions or slopes that are 3: 1 or flatter and to a depth of one (1) to three (3) inches, as determined on site for slopes steeper than 3: 1. The soil shall be tilled until a well pulverized, firm, reasonably uniform seed bed is prepared conforming substantially to ground elevations as shown on the plans and/or as existing prior to construction. The disturbed area shall blend uniformly into adjacent topography. Good surface drainage must be provided, allowances for settlement made and ground elevation adjusted accordingly. Visible ponding will not be allowed. All stones, roots, sticks, rubbish and other objectionable materials shall be removed. e b. Soil Improvements: Soil additives shall be incorporated in an approved manner into the top soil at the following rates: Fertilizer - 20 pounds per 1000 square feet of 5-1 0-1 0 fertilizer and 30 pounds per 1000 square feet of 10-1 O-,} 0 fertilizer for established lawns. e Lime - 100 pounds per 100 square feet. 09-59 Water Main Construction Division 09 e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL Superphosphate (0-20-0) - 12 pounds per 100 square feet c. Seedimz:: Seeding must be done within thirty (30) calendar days after the initial ground disturbing activity. Seed bed must be in good, friable condition and not muddy or hard at the time seeding is performed. Seed shall be applied at the rate specified and raked or tilled into the topsoil with the resulting furroughs rurming across the natural slope of the ground. Under no circumstances will any tilling activity be allowed parallel with said slope. Slopes steeper than 3; 1 shall require use of hydraulic seeding unless otherwise specifically approved by the Water Resources Engineer. d. Mu1chin¡z:: After fertilizing, seeding and raking, dried straw shall be spread unifonnly over the area at a rate of90 pounds per 1000 square feet. Approximately 1/4 of the ground should remain exposed to avoid smothering seedlings. In areas where possible erosion is evident the Contractor may employ either Hydro-seeding or jute netting or a combination offor more immediate soil stabilization. The Water Resources Engineer shall have the authority to insist that any and all appropriate erosion control and soil stabilization measures be employed by Contractor if it is evident a problem exists. e. Maintenance: The Contractor shall maintain the seeded areas until there is a uniform growth three (3) inches high. Maintenance shall consist of watering, weed and pest control within established lawns, fertilization, erosion repair, reseeding and all else necessary to establish a vigorous healthy and uniform strand of grass. All areas and spots, which do not show a uniform strand of grass, for any reason, shall be treated repeatedly until a uniform strand is attained. The Engineer will be consulted prior to seeding for a determination of appropriate seed mixture. 09.03.24 WORK WITHIN NCDOT RIGHTS-Of-WAY Construction is permitted within rights-of-way of the North Carolina Department of Transportation Division of highways in accordance with their Policies and Procedures for Accommodating Utilities on Highway Rights-Of-Way as amended. The City of Monroe will enforce this entire document as it relates to this work. All Contractors are required to become familiar with this docwnent and any amendments, which are available from the Manager of Right-Of-Way, North 09-60 Water Main Construction Division 09 CITY OF MONROE ST ANDARD SPECIFICATIONS AND DEI AIL MANUAL Carolina Department of Transportation, Division of Highways, Raleigh, North Carolina. e 1. The City of Monroe has entered into an encroachment agreement with North Carolina Department of Transportation, which grants the right for any work within the Department of Transportation's right-of-way. The encroachment agreement for any work is within NCDOT rights-of-way under this project is included in the Special Provisions of the contract. The Contractor shall have a copy of the approved encroachment at the construction site at all times. 2. Certain notices are required in writing before any work can proceed within the Department of Transportation's rights-of-way. Upon ample notice by the Contractor, the Engineer can make this notification. e 3. Proper signing before, during, and after construction is confonnance with the manual on Uniform Traffic Control Devices for Streets and Highways will be required. In addition, warning signs as related to soft and/or low shoulders and broken pavement, may be required by the Engineer 4. Piling and/or storage of excavated material upon pavement and on some types of shoulders is prohibited unless special permission is granted by the Department of Transportation's Division Engineer. Any material spilled, tracked or placed on the pavement is to be cleaned and damaged pavement repaired subject to stoppage of all work by the City of Monroe; Drainage ditches are to be protected :&om siltation as specwed on the plans and must be opened at the end of each work day or as weather conditions require. e 5. Open trenches are prohibited between dusk and dawn and at designated peak traffic hours unless special permission is received fÌom the NCDOT Division Engineer. 6. e When cutting of pavement is permitted, only one half of the road width shall be opened at any time. Full traffic flow is to be maintained between dusk and dawn and at other peak hours oftraffic as required by the encroachment agreement or other Special Provision. 7. The Contractor and his suppliers are directed to contact NCDOT to verify axle load limits on State maintained roads and bridges, which will be used for hauling equipment or materials to the project site. The Contractor and his suppliers shall do allthat is necessary to satisfY NCDOT's requirements and will be responsible for any damage to roads and bridges resulting fÌom project construction. e 09-61 Water Main Construction Division 09 e e e e -e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 8. Job Closeout Clause The Contractor upon conducting a :final inspection of a water main installed within NCDOT right-of-way limits shall contact NCDOT and have them present at the Final Inspection with the Water Resources Engineer. Any comments made by the NCDOT Permits Engineer, shall be added to the punch list and addressed by the Contractor in a timely manner. The Contractor will be responsible for providing a letter fÌom NCDOT signifYing their acceptance ofthe work done within NCDOT right-of-way before acceptance and ownership of the water main is given by the Water Resources Department. 09.03.25 CITY OF MONROE JOB CLOSE-OUT The City of Monroe Water Resources Department requires the following procedures be completed before the activation of sanitary sewer main extension. I. Final Inspection: Upon substantial completion of a sewer main extension project. The Contractor shall contact the Water Resources Department Inspector or Representative to conduct an on-site final inspection ofthe install infrastructure. All uncompleted work, defective materials and site restoration matters shall be listed on a punch list for the Contractor to complete before final acceptance. Upon completion of the punch list items a follow up inspection will be completed by the Water Resources Inspector . 2. As-Builts and EngineerinlZ Certification: The activation of the sewer main shall not take place until the Project Engineer has furnished the Water Resources Department with an Engineering Certification ofthe Project and the As-Built drawing have been submitted, reviewed and approved by the Water resources Department. 09-62 Water Main Construction Division 09 e íe THIS PAGE IS INTENTIONALLY LEFT BLANK e e e e e DIVISION 10.00 e WATERMAIN . 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(1')00 0 n ..... _ fTl ~ fT1 -0 J: fTl$ Z ...... n ..... -t Z 0 Z 03: 0 ;:0 CI Z IÞ ""T'J ...... n .." n ;:0 1>Z C1 fT1 ::OI < n -10 J> -I r VJ 1> 0 fT1 ttlfTl ^ r Z fT1 ..., fTl fT1 < 0 r::o -I fTl D...... 0 ~(I) -I ...... V'fTl Z ;:0 e C1 I 3' MIN I < Þ iO ...... fTl (I) e e e DIVISION 11.00 e SANITARY SEWER MAIN CONSTRUCTION e e · e THIS PAGE IS INTENTIONALLY LEFT BLANK e e e -- e e . . CITY OF MONROE ST ANDARD SPECIFICATIONS AND DESIGN MANUAL 11.00 SANITARY SEWER MAIN CONSTRUCTION 11.01 DESIGN OF SANITARY SEWER MAINS 11.01.01 HYDRAULIC DESIGN No public gravity sewer main shall be less than 8 inches in diameter. All design flow calculations shall be based on current NCDENR guidelines and standards. The following are the current City of Monroe and NCDENR design standards: 1. Zoning Areas Residential Areas: Residential Areas shall be based on NCDENR flow criteria of 120 Gallo nslDaylBedro om Multifamily Area shall be based on NCDENR flow Criteria of 120 GallonslDaylBedroom with a minimum per unit flow generation of 240 GallonslDay. The City of Monroe Zoning Regulations limit the total units of multifamily dwellings to 10 units per acre. Commercial Areas: Flow generation shall depend on the specific type of commercial dwelling. Please refer to the NCDENR Regulations. Industrial Areas: Flow generation shall depend on the specific type of industrial development Please refer to the NCDENR Regulations. The City of Monroe Water Resources Department reserve the right to determine flow design criteria and proper sizing for all sewer main extensions. 2. Peaking Factors: Determine peak daily flow by multiplying the average daily flow by the appropriate peaking factor. The minimum peaking factor permitted by the North Carolina Department of Environmental Management is 2.5 and this factor should be used in the absence of specific design or flow data supporting a higher peaking factor. 11-1 Sanitary Sewer Main Construction Division I I CITY OF MONROE ST ANDARD SPECIFICA nONS AND DESIGN MANUAL 3. Size the Sanitary Sewer Pipe: a. All sewers shall be designed flowing halffull at the average daily flow. All sewers shall be designed and constructed to give mean velocities when flowing full of not less than 2.0 feet per second, based on Manning's equation Manning's Equation: v = 1.486 X (RHJ2/J x SJ/2 n Where: V = velocity in feet/second n = coefficient of roughness (n= 0.013) S = slope of energy grade line, ft/ft RH = hydraulic radius, ft = cross sectional area offlow (ft2) or diameter (in) wetted perimeter 48 4. Determine the Minimum Slope: The following lists the minimum design slopes based on diameter of sewer main. Sewers shall not be oversized to justify using flatter slopes. MINIMUM SLOPES FOR SANITARY SEWER MAINS AS REQUIRED BY NCDENR Sewer Main Size (Inches) Minimum Slope (Feet /100 Feet) 8 0.40 10 0.28 12 0.22 14 0.17 15 0.15 16 0.14 18 0.12 21 0.10 24 0.08 11-2 Sanitary Sewer Main Construction Division 11 e e e e e e e e e . CITY OF MONROE ST ANDARD SPECIFICATIONS AND DESIGN MANUAL 27 0.07 30 0.06 36 0.05 11.01.02 GENERAL SEP ARA nON DISTANCES REQUIRED Three (3) feet minimum cover shall be provided for all sewer mains unless Ductile Iron Pipe is specified. Conflicts with Existing and Proposed Utilities 1. Water Mains a. l8-inch vertical clearance for water lines installed above and below sewer lines. b. 10 feet horizontal separation for water lines parallel to sewer line. c. Whenever it is necessary for a sewer main to cross under a water main with less than l8-inches of vertical separation, the water main shall be constructed of ductile iron pipe or a distance of 10 feet on each side of the point of crossing. Whenever it is necessary for a sewer main to cross over a water main, the sewer main and water main shall be constructed of ductile iron pipe, with joints meeting water main standards, for a distance of 10 feet on each side ofthe point of crossing. d. Sewer mains shall be laid a least 10 feet horizontally from existing or proposed water mains unless local conditions or barriers prevent a 10- foot horizontal separation. In that case, the sewer main will be laid in a separate trench, with the elevation ofthe bottom of the water main at least IS-inches above the top ofthe sewer. When these conditions are not met the sewer main and water main shall be constructed of Ductile Iron Pipe with joints meeting water main standards. e. Sewer lines shall be installed at least 100 feet &om water wells. Where this separation is not possible the sewer line shall be ductile iron pipe. Sewer lines shall not be installed within 25 feet of any private well or within 50 feet of any community well. 11-3 Sanitary Sewer Main Construction Division 11 11.01.03 11.01.04 CITY OF MONROE STANDARD SPECIFIC A nONS AND DESIGN MANUAL 2. Storm Sewer For PVC sewer lines - There shall be one-foot clearance from the top of the utility to the bottom of the sewer. If this clearance is not possible the sewer line shall be ductile iron pipe ITom one foot outside the utility trench with a minimum length of 10 feet on each side of the utility. If the sewer main crosses under an existing or proposed storm drain pipe. DIP shall be used in all cases a minimum distance of 10 feet on each side of the storm drain pipe. e 3. Gas Mains. Electrical and Telephone Duct Banks When crossing gas mains, electrical or telephone duct banks, a vertical clearance of 18-inches shall be maintained. Whenever the 18-inch clearance requirement is not met, ductile iron pipe shall be used. e 4. Underground Cables Individual telephone, electric power and cable TV cables may be crossed with a minimum clearance of 12-inches and a horizontal separation of 2- feet. The Design Engineer shall refer to the City's Standard Detail for Local Residential Streets in Division 08, if applicable. e PROTECTION OF POTABLE WATER SUPPLIES 1. A horizontal distance of 100 feet shall be maintained from any private or public water supply source, including any WS-l waters or Class I or Class II impounded reservoirs used as a source of drinking water. 2. A horizontal distance of 50 feet shall be maintained ITom waters classified WS-II, WS-III ITom nonnal high water. 3. Any other stream, lake, or impoundment, from normal high water is a minimum of 10 feet separation. e PIPE MATERIAL SELECTION The City of Monroe approves the installation of four (4) different types of pipe, which are DIP, PVC SDR-35, pve C900 SDR-25, and HDPE SDR-17. HDPE shall only be used in pipe bursting applications. The selection of the type of pipe to be installed is based on the following conditions per Standard Detail 12.09.00: e 11-4 Sanitary Sewer Main Construction Division 11 e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DESIGN MANUAL Depth of Bury < 3 feet shall always require the installation of ductile iron pipe. Depth of Bury> 20 feet shall always require the installation of ductile iron pipe. Depth of Bury < 12 feet and> then 3 feet shall permit the installation ofSDR-35 PVC pipe Depth of Bury > 3 feet and < then 20 feet shall permit the installation ofPVC C900 SDR-25 PVC SDR-35 shall always require a minimum of TYPE III Bedding per the Standard Detail 12.09.00. PVC C900 SDR-25 shall always require a minimum of TYPE II Bedding per the Standard Detail 12.09.00. TYPE III may be required where rocky conditions are encountered. 11.01.05 MANHOLE SELECTION Manholes will be furnished with the following clear inside diameters according to the sewer main diameter UIÙess amended by written permission from the Water Resources Engineer: 8" to 12" pipe IS" to 36" pipe 39" to 54" pipe 54" and larger 4' Manho Ie 5' Manhole 6' Manhole 8' Manhole The manhole diameter for a given pipe size may be increased from that shown above for applications where the angle between the influent and effluent pipes precludes proper installation of the pipe connections in the standard size manhole. All manholes for 8" sewer main shall be four (4') feet inside diameter. All manholes constructed with an invert separation of 2.5 feet or greater shall include an outside drop. Manhole Types: Cross Country Manholes: All manholes located outside of the public-right-of-way shall be consider Cross COlUltry Manholes and shall be designed in accordance with Standard Detail 12.02.00 ofthese Specifications. Manholes shall be 2 feet above fmal grade with a permitted tolerance of 6-inches. Special Conditions may require these manholes to be installed flush with the ground written permission 11-5 Sanitary Sewer Main Construction Division 11 CITY OF MONROE ST ANDARD SPECIFICATIONS AND DESIGN MANUAL ftom the Water Resources Engineer shall be required before such installations are permitted. . Street Right-of-Way Manholes: All manholes installed inside the public right-of- way shall be considered Street Right-of- Way Manholes and shall be designed in accordance with Standard Detail 12.01.00. All manholes inside of roadways shall be installed flush with the pavement. All manholes installed outside of pavement but in the right-of-way shall be installed with either a water tight ring and lid and elevated above a grade a minimum distance to prevent storm drainage ftom entering through the lid. Concentric Cone Manhole: In locations where the depth of bury of the manhole is less then 5 feet a concentric manhole shall be installed without steps designed in accordance with Standard Detail 12.05.00. All other manhole installations shall require an eccentric cone. e Drop Manholes: Drop manholes are recommended for design in areas that pennit their installation in order to minimize the sewer main depth of bury. All manholes with a drop of greater than 2.5 feet shall require the design of a Drop Manhole in accordance with Standard Detail 12.03.00. 11.01.06 MANHOLE SPACING e The number of manholes shall be held to a minimum subject to the following: a. Manholes shall be placed at all horizontal and vertical break points and at the confluence of two ormore separate lines. b. Maximum manhole spacing shall be as follows: Pipe Size Maximum Manhole Spacin2 e 8" - 15" 15" - 27" 30" - 42" Over 42" 425' 550' 600' 600' . Rim elevations of all manholes shall be shown on the plans. Manholes with rim elevations below the 100-year flood elevation shall have sealed watertight lids. These locations are shown on the plans. Outside vents for watertight lid manholes shall be provided where shown on the plans and shall conform to the plan detail with the opening of the vent at least one foot above the 100-year flood elevation. Please refer to Standard Detail 12.08.00. e 11-6 Sanitary Sewer Main Construction Division 11 e e e e e 11.01.07 11.01.08 11.01.09 CITY OF MONROE STANDARD SPECIFICATIONS AND DESIGN MANUAL SANITARY SEWER LATERALS Sanitary Sewer Laterals shall range in size between 4 and 12-inch. The City of Monroe shall make all sanitary sewer taps on live sewer mains unless written pennission is granted by the City of Monroe Water Resources Engineer to the Developer's Contractor to perform the tap under the inspection of the City of Monroe's onsite representative. All taps to be designed inside a residential or conunercial subdivision shall extended to the right-of-way and property line or the edge of the public utility easement. Refer to the Water Resources Standard Detail 12.13.00 for a graphical representation of construction of a standard sanitary 4-inch sewer lateral. Refer to the City of Monroe Engineering Department Standard Street Right-of-Way Details for a location description of sanitary sewer laterals. 4-inch Sanitary Sewer Laterals shall be permitted to be connected into the sanitary sewer main or a manhole. 6-inch and greater sized sanitary sewer laterals shall be required to connect directly to a manhole. PROVISIONS FOR TESTING Provisions for testing shall be covered under the Construction, Installation and Tcsting of Sanitary Sewer Mains Section, of these Specifications. ENGINEERING PLAN SUB11ITT AL REQUIREMENTS 1. Licensed North Carolina Professional Engineer: All plans submitted for review by the City of Monroe Water Resources Department must be stamped, signed and dated by a Licensed North Carolina Professional Engineer with expertise in the design of sanitary sewer mains. The Professional Engineer shall be in good standing with the North Carolina State Board of Registration and shall be in responsible charge of the sanitary sewer project. 2. Drafting Standards: The standard symbols and line weights used in drafting City of Monroe water and sewer plans are provided in Section 11.01.10. A legend of symbols is required with each set of construction plans and where additional symbols are required, they shall be clearly defined and included in the legend. The standard scale for City Of Monroe construction drawings is 11- 7 Sanitary Sewer Main Construction Division 11 CITY OF MONROE ST ANDARD SPECIFICATIONS AND DESIGN MANUAL 1" = 40' or 1" =50' in plan view and I" = 4' and 1" = 5' in profile view, respectively. Expanded detail drawings should be used whenever needed to clearly convey design details. Standard sheet size shall be 24" x 36" for construction plans and 8-112" x 14" for any NCDOT encroachment maps. All sheets must contain the standard City of Monroe title block format. City of Monroe Erosion Control Detail Sheets and Water and Sewer Details Sheets where appropriate. e Engineer shall submit all drawings computer files as an AutoCad R14 .dwg file. Engineer shall also submit as-builts on 0.3 mm Mylar dated, sealed, and clearly marked as-built. Elevations must be shown at the left side of the profile section. Station numbering should increase ÍÌom left to right and should be approximately above the corresponding plan view stationing. Both plan and profile must be shown on the same sheet. Sewer line drawings should run ÍÌom left to right upstream. e Structures and appurtenances (vaults, manholes, hydrants, valves, piers etc.) should be labeled in plan and profile with station number and standard detail reference if applicable. All underground obstructions shall be shown on both plan and profile (if applicable). Vertical clearance requirements are to be shown in profile and any requirements for Ductile Iron Pipe are shown. e Pipe sizes shall be shown on the plan view and properly scaled on profile. Distance of water main ÍÌom edge of pavement shall be identified on the plans. Drainage ditches are to be shown with direction of storm runoff Erosion control devices are to be shown as well in plan view and properly labeled. Bearings on sewer lines shall be labeled in the upstream direction. e The City of Monroe symbols library and title block format are available in Auto Cad upon request. A list of appropriate symbols is provided in Section 11.01.10 ofthis Division. Subdivision sewer plans shall include lateral locations only to show how each lot will be served. It shall be noted on the plans that exact lateral locations are determined during construction, and the exact locations are required for as-built records. e 11-8 Sanitary Sewer Main Construction Division 11 CITY OF MONROE STANDARD SPECIFICATIONS AND DESIGN MANUAL . 3. Plan Submittals: a. Design Criteria: A checklist for design review for sanitary sewer main extensions has been provided in Section 11.01.11 of this Division to serve as a guideline ofthe requirements. b. Review Sets: The Engineer shall submit to the City of Monroe Water Resources Department two (2) sets of Plans for each review until approval has been granted. All sets of plans must be sealed and signed with the Professional Engineers original signature and date. e c. Aporoved for Construction Plans: Plans shall be considered approved for construction after DENR review and approval has been granted. At which time, the Engineer shall submit to the City of Monroe four (4) sets of the Plans for construction use. d. Final As-Builts Plans: After construction has been completed and approved by the City of Monroe Water Resources Department, the Contractor shall submit to the Engineer a set of as-built drawings from the construction plans. The Engineer shall make the necessary e modifications to the plans to reflect the as-built changes and present to the City of Monroe Water Resources Department one (1) "As- built" sets of the plans on Mvlar Sheets. e. Engineer's Certification: After completion of the project the Project Engineer shall submit to the City of Monroe Water Resources Department the following statement with it signed, sealed and dated along with the Mylar As-built drawings. I, (insert engineer's name), as a duly registered Professional e Engineer in the State of North Carolina, do hereby certifY that to the best of my knowledge and belief, that the (insert project name) authorized under NCDENR Permit Number (insert permit number) has been constructed and completed substantially in accordance with the approved plans and specifications, and that all specified testing has been successfully completed. No system shall be activated nor Certificate of Occupancy be issued until the Engineer's Certification is received. 4. Specifications: e The Engineer shall state on the plans that "All Work Shall Conform To The Current City of Monroe's Water Resources Department Specifications For 11-9 Sanitary Sewer Main Construction Division 11 CITY OF MONROE ST ANDARD SPECIFICATIONS AND DESIGN MANUAL Water and/or Sewer Main Design And Construction. Any Discrepancies Between The Plans And Specifications Shall Be Subject To The Decision Of The Water Resources Department Engineer Whose Decision Shall Be Final. " e This reference to the City's standard specifications shall be applicable to only sewer mains and service lines. Any plans involving sewer pump stations or wastewater treatment plant facilities or upgrades shall require specific specifications prepared by the Engineer in consultation with the City ofMomoe Water Resources Department. 5. Application: e A partially completed gravity sanitary sewer main application will be provided by the Water Resources Department. The application will then need to be completed, signed and sealed by the project engineer and returned with a check in the appropriate amount made payable to NCDENR The City of Monroe Water Resources Department will then mail the application and check to NCDENR. 6. Encroachments: e The Engineer shall complete and submit to the City of Monroe an encroachment agreement for all work conducted on NCDOT rights-of- way. The Water Resources Department will mail to the Engineer either a two party or three party encroachment agreement depending on the nature of the work. The Engineer shall return one (1) original and six (6) copies of the encroachment agreement with seven (7) sets ofthe plans showing the work to be perfonned on NCDOT rights-of-way. 7. Shop Drawings and Submittals: Shop Drawings and Submittals for Materials to be used in the sanitary sewer main construction are covered in the Sanitary Sewer Main Materials Section of these Specifications. e e 11-10 Sanitary Sewer Main Construction Division 11 11.10.00 STANDARD SYMBOLS FOR SANITARY SEWER AND WATER CONSTRUCTION PLANS _.~_...~".'. ,~_,_~,.,.",~.,"..... "~.~.~~.,,.~,..~. ~u~~_.~_.~,~ _~~ ____~~ e __~ __._~., ~~..".... _"_~ ~_~~ '_~_'__r ~~_ _~ ___ ~ .~~ ,~-----------_._---!['----------" L," .-------~----.- Fè ---...-------- o o ------ ------ T G W ..___________ _____________ww.___._..__._.__. e SS ·__~____~~.~~~,.___,_.__.__nr~~.'. _~~'r_~__~___ :.~~~~i."¡"'.,!;~.~~!l..~~_¡¡:~~_:ŒJ~~.t.'..lt:J.~~~~ -------------- --------- - - e UD o 1m i:8J @ o -(]) o * o --v- e IS> IS> @ . œ> EE 8 ~ ISJ 6- <1'> -Ó- 1><1 g e EXISTING STREET R/W PROPOSED STREET R/W EDGE OF P A VEMEN T EDGE OF DIRT/GRA VEL ROAD SURVEYED PROPERTY LINE UNSUR VE>'CD PROPER TY LINE FENCE CEN TERUNE OF CREEK EXISTING STORM DRAIN PROPOSED STORM DRAIN (LABELED) TELEPHONE LINE GAS LINE EXISTING WA TER LINE PROPOSED WA TER UNE EXIS TlNG SANI TAR Y SEWER LINE PROPOSED SANITARY SEWER LINE (LABELED) EXISTING CURB &: GUTTER PROPOSED CURB & GUTTER EXISTING DRAINAGE tic UTlUTY EASEMENT PROPOSED PERMANENT DRAINAGE & UTILITY EASEMENT EXISTING SANITARY SEWER EASEMENT PROPOSED PERMANENT SANITARY SEWER EASEMENT DUKE POWER OR AT&T R/W PROPOSED TEMPORARY SLOPE tic CONSTRUCTION EASEMENT FRAME tic GRA TE CA TCH BASIN OPEN THROA T CA TCH BASIN JUNCTION BOX ELEC TRICAL TRANSFORMER EXIST/NG STORM DRAINAGE MANHOLE SHRUB POWER POLE IRON STREET LIGHT TREE SIGN EXISTING SANITARY SEWER MANHOLE PROPOSED SANITARY SEWER MANHOLE /ll£LL CA TV PEDESTAL EXISTING ELECTRICAL MANHOLE GAS TEST STA TlON CONCRETE MONUMENT MAILBOX R/W MARKER TELEPHONE PEDESTAL EXISTING TELEPHONE MANHOLE EXISTING FIRE HYDRANT EXISTING WA TER VAL VE WA TER METER 11-11 e e THIS PAGE IS INTENTIONALLY LEFT BLANK e e . e e e e e CITY OF MONROE WATER RESOURCES DEPARTMENT SPECIFICATIONS 11.11.00 Water Resources Department Checklist for Design Review for Sewer Main Extensions Subdivision or Project Name: First Review By: Date: Second Review By: Date: Third Review By: Date: Check-off each of the requirements in the appropriate column as each requirement is approved. Do not check-off a listed requirement where' revisions are required as result of review. Revision requirements should be noted in response to designer. Enter "N/ A" under First Review if a requirement is not applicable to project of spccitic review. First Second Third Review Review Review GENERAL REQUiREMENTS -- Plans Sealed and Signed by Registered Professional Engineer Scale of All Plan Sheets Labeled Date of Plans and Each Revision Shown If Major Subdivision, Preliminary Plat Approved by Planning Director If Major Subdivision, Streets and Lots Conform to Approved Preliminary Plat If Multi-Unit Development, Approved by Planning Director If Multi-Unit Development, Site Plan Conforms to Planning Approval Survey for Design Tied to City Monument or N C Grid Coordinates Submit Industrial Waste Survey if Applicable -- -- -- --- -- --- --- SEWER MAIN DESIGN _ _ Sewer Main Sizes Conform to City Sewer System Plan _ _ Sewer Main Sizing Provide Adequate Capacity _ _ Sewer System Downstream Provide Adequate Capacity _ _ _ Sewer Manhole Spacing Correct (Not >500 Ft) _ Sewer Manholes In New Streets at Street Centerline +/- 4 Feet _ _ _ Sewer Manhole Rim Elevations in Street RIW at Grade _ _ _ Sewer Manhole Rim Elevations in Off-Street Easements 2 Feet Above Grade _ _ Sewer Manhole Rims Above Storm Drainage or Floodway Areas or Sealed _ _ On-Site Necessary Easements Shown on Approved Plat or Recorded _ _ Off-Site Necessary Easements Obtained and Recorded Easement Widths Meet Current Standards for all New Sewer Mains Sewer Tap Stub-Out Shown to Each Lot 10 Ft Horizontal Separation from all Parallel Sewer Mains; or DIP if Not Achievable _ _ 18 Inches Vertical Separation at All Water Main Crossings Over Sewer; or DIP if Not Achievable _ _ _ 12 Inches Vertical Separation from all Storm Sewers or DIP if Not Achievable - 11-12 Sanitary Sewer Main Construction Division 11 CITY OF MONROE WATER RESOURCES DEPARTMENT SPECIFICATIONS _ _ _ 100 Ft Distance from Water Supply Reservoir or DIP and 50 Ft if Not Achievable _ _ _ 50 Ft Distance rrom WS-III Surface Water Normal High Water or DIP if Not Achievable _ _ _ 100 Ft Distance from Private Drinking Water Well or DIP and 25 Ft if Not Achievable _ _ _ Creek Crossing Bottom of Pipe Above 25-Year Flood Elevation _ _ Drop Manholes Provided Where Grade Drop Exceeds 2.5 Ft _ _ _ Sewer Main DIP Where Depth of Bury <3 Ft or> 12 Ft _ _ _ No Greater than 2 Pipe Transition Couplings in Any Run of Pipe Between Manholes All Service Taps 4" or Larger at Manholes All Sewer Lines Profiled _ _ _ All Distances Between Manholes and Pipe Slopes Shown on Profile and Correct _ _ _ All WaLer Main and Storm Sewer Crossings Shown on Sewer Profile _ _ _ Existing and/or Proposed Grade Shown on Profile Minimum Pipe Slope Provided for 2 Ft/Sec Velocity and Capacity Requirements of Design All Sewer Lines Labeled and Stationed -- --- -- --- 11-13 Sanitary Sewer Main Construction Division!! e e e e e e . e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 11.02 SANIT ARY SEWER MAIN MA TERlALS 11.02.01 11.02.02 DESCRIPTION: All materials, equipment, labor for water main construction shall furnished in accordance with these specifications and in accordance with the Plans prepared by a Registered Professional Engineer licensed to practice in the State of North Carolina. SHOP DRAWINGS AND SUBMITTALS: The City of Monroe shall have the right to request a Fonna1 Submittal or a Subdivision Submittal. Fonnal Submittal: As a minimum, three (3) copies of the following shop drawing information shall be submitted to the City of Monroe Water Resources Department for review and approval. 1. Complete materials list of all items proposed to be furnished and installed under this Section. 2. Complete shop drawings of all items to be fabricated. 3. Manufacturer's specifications and other data required to demonstrate compliance with specified requirements. 4. Manufacturer's recommended methods of installation. Contractor or his Supplier shall reference 11.02.04 ofthis Section, which shall list all materials, ifused on a water line project, then a shop drawing submittal is required under the formal submittal process. Subdivision Submittal: As a minimum, one (1) typed copy of the following shop drawing infonnation shall be submitted to the City of Monroe Water Resources Department for review and approval per attached form located in 11.02.04 at the end of this Division. This fonn shall list the following: 1. Complete materials list of all items proposed to be furnished and installed under this Section. 2. Manufacturer, Size, and Model #, of all water main materials to be used on this project. 3. Supplier and Name and Phone Number of Contact :6:om Company. 11-14 Sanitary Sewer Main Construction Division 11 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL Contractor or his Supplier shall reference and complete the form in this Section in 11.02.04, which shall list all materials used on a water line project. e Any not listed in the following materials specifications may require a detail review by the Water Resources Engineer and additional shop drawings and proof of conformance to accepted industry standards. 11.02.03 MATERIAL SPECIFICATIONS Unless superseded or modified in the Detailed Specifications, all materials, apparatus, supplies methods of manufacture, or construction shall conform to the specifications contained in this Section. National material standards (ASTM, ANSI, A WW A, etc.) referred to herein shall be considered to be the latest revisions only. e 1. SEWER MAIN PIPES A. SDR·35 PVC: Unless amended on the construction drawings or elsewhere n these specifications, sewer pipe 6-inches through IS-inches in diameter may be Polyvinyl CWo ride (PVC) sewer pipe with a Standard Dimension Ratio (SDR) of35, and shall meet all requirements of ASTM Specification D-3034. Sewer pipe 18-inches through 24-inches in diameter may be Polyvinyl CWo ride Pipe (PVC) large diameter sewer pipe with a minimum pipe stifiÌ1ess of 46 PSI in accordance with ASTM Specification F-679. Pipe joining shall be push-on bell and spigots only. The pipe shall be furnished with integral bells and with gaskets that are permanently installed at the factory. The pipe shall be furnished in nominal lengths of 13 feet. PVC sewer pipe shall be green or white in color. e PVC pipe shall contain the markings required by ASTM D·3034 or F-679 as applicable. The manufacturer shall submit certification that the pipe has been tested in accordance with ASTM D-3034 or F-679 as applicable and has been found to meet all requirements. Test samples shall be as selected by the manufacturer or testing laboratory unless otherwise stipulated in the Special Provision Section of these specifications. e Fittings shall be in accordance with ASTM D-3034, F-679, and/or D-32l2 as applicable, with stiffuess and wall thickness equal to or greater than the pipe. Adapters shall be provided to join different materials. The minimum nominal laying length of the pipe shall be not less than 8 feet for 8" through 24" pipe and not less than 13 feet for pipe larger then 24". Shorter lengths may be provided where required to maintain manhole e 1 I ·15 Sanitary Sewer Main Construction Division 11 e . e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL location and for providing a flexible joint within two (2) feet of the exterior wall of the manhole. All pve Sewer Pipe will be shipped, stored, and strung at the project in such a manner as to be protected fi:om accumulated exposure to sunlight and possible ultraviolet radiation of no more than four (4) weeks. B. Ductile Iron Pipe: Ductile iron pipe shall conform to the requirements of A WW A Standard C-151 and shall have an epoxy or lafarge calcium aluminates lining approved by manufacturer for sewer usage. Unless otherwise shown on the construction plans, all ductile iron shall be furnished with push joints in accordance with A WW A C-ll1. Twelve (12) inch and smaller diameter pipe shall be a minimum Pressure Class 350. Pipe greater then Twelve (12) inches in diameter shall be a minimum Pressure Class 250 and selection shall be based on the installation conditions. This pipe class shall be as shown on the plans or elsewhere in these specifications. 1. Push-On Joint Material: Gaskets for push-on pipe shall be furnished by the pipe manufacturer. Gaskets and gasket lubricant shall meet the requirements of ANSI Specifications A21.11 (AWWA C-l11) Approved DIPManufacturers shall be Griffin Pipe "SewperCoat", U.S. Pipe 401 Pro tecto or an approved equal rated for sewer usage. C. Polyvinyl CWo ride œvc C900 SDR-25) Pipe: Unless amended on the Construction Drawings or elsewhere in these specifications, sewer main pipes may be constructed in accordance with A WW A C-900 SDR-25. The pipe shall have a minimum Pressure Class of 165PSL PVC Pressure Pipe shall be made fi:om white or blue pigmented virgin materials and shall be furnished in lengths of20 feet. Shorter lengths may be provided where required to maintain manhole location and for providing a flexible joint within two (2) feet ofthe exterior wall of the manhole. All PVC Sewer Pipe will be shipped, stored, and strung at the project in such a manner as to be protectedfi:om accumulated exposure to sunlight and possible ultraviolet radiation of no more than four (4) weeks. a. Push on Joint: Pipe joints will be by eIastomeric joints only. Joints shall conform to A WW A C-900 for S-inch through IS-inch pIpe. Pipe bells, with gasket seats, shall be formed as the pipe is extruded. Sleeve couplings are not permitted except as necessary for repairs of 11- I 6 Sanitary Sewer Main Construction Division 11 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL existing mains or as necessary for the employment of pressure/leakage testing. The following pipes are currently approved for use on sanitary sewer mains: PVC-SDR 3S DIP PVC-C900 SDR 2S ETI US Pipe ETI North American Griffin North American John Manville John Manville 2. 4-INCH SANITARY SEWER LATERALS: A1l4-inch laterals shall be Schedule 40 PVC or DIP laterals as herein before specified. 4-inch laterals may COIlllect at manholes or to the sewer main. A. Schedule 40 PVC: Schedule 40 PVC laterals shall be in accordance with ASTM D-2665, NSF 14, and D-1785. Fittings shall be socket type in accordance with ASTM D-2466. Joining shall be through solvent cement in accordance with ASTM D-2564. Approved manufacturer(s) are Charlotte Plastics, JM Manufacturing, Bristol Pipe and National Pipe. B. Ductile Iron Pipe: 4-inch shall be in accordance with the specifications listed for sewer main pipe above. Approved manufacturer shall be the same as listed for DIP Sewer Mains above. 3. 6-LNCH THROUGH 12-INCH SANITARY SEWER LATERALS: All6-inch through 12-inch sanitary sewer laterals shall be DIP, SDR 35 Polyvinyl Chloride Pipe, Schedule 40 PVC or Class 350 DIP as herein before specified. Approved manufacturer(s) are Charlotte Plastics for Schedule 40 PVC and the manufacturer(s) listed above for PVC SDR-35 and DIP. 4. COUPLINGS/ SADDLES: Couplings for 12-inch and smaller pipe may also be elastomeric PVC with internally molded rigid fiberglass insert and stainless steel bands as manufactured by DFW Plastics or approved equal. The coupling shall provide a water and/or gas tight connection. 1 1-17 Sanitary Sewer Main Construction Division 11 e e e e e e e e e . CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL Couplings for IS-inch and larger pipe shall be submitted to the Water Resources Engineer for approval. Saddles for lateral cOlll1ections shall be ABS Plastic, PVC, Elastomeric PVC, or approved equivalent. Saddles shall be connected to PVC pipe using a flat or profile gasket, as applicable to the type of pipe, and at least two stainless steel bands around the pipe and saddle. The lateral shall be connected to the saddle with a compression gasket, solvent weld adapter, and/or stainless steel band, as applicable. Approved manufacture(s) Predco Incorporated. 5. MANHOLES All sewer manholes shall be constructed of precast concrete sections only in conformance with the following specifications and City ofMomoe Standard Detail Drawings. Special cast in place manhole structures shall be as shown on the plans and shall comply with the various other applicable sections in these specifications. Manholes shall be furnished with pre-cast bottom slabs and flexible watertight boots for IS-inch and smaller pipe. The boots shall be cast in as integral parts of the base or installed in cored openings with stainless steel compression bands, and shall conform to ASTM C-923. Manholes for 18-inch and larger pipe may be furnished with precast bottom slabs and flexible boots, flexible seals, or concrete collars. The flexible seals shall be A-Lok or Contour Seal. Flexible connectors shall conform to ASTM C-923. The concrete collars shall be according to the applicable Standard Detail. Manholes to be placed over existing pipelines shall be furnished with "doghouse" openings cast in the bottom section allowing it to be set over the existing pipe. A concrete base and invert shall be poured around the bottom section and the pipe according to the Standard Detail 12.04.00 of these Specifications. Shop drawings, which show dimensions, openings for pipe, reinforcing steel dimensions and layout and other essential details shall be submitted for approval. A. Precast Reinforced Concrete Manhole Sections: All precast reinforced concrete manholes shall conform to the City ofMomoe Standard Detail drawings and to ASTM C~478. The following minimum standards shall also apply: 1. Wall thickness shall be I/12th of the inside diameter with a minimum thickness of five (5") inches. 2. Base sections shall be cast monolithically or have a waterstop cast in the cold joint between the walls and the base slab. 1 I - 18 Sanitary Sewer Main Construction Division 11 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 3. Cone sections shall normally be eccentric with the inside face of one side vertical and flush with the inside face of the barrel section. Eccentric cones with bolt down fÌ'ame and cover shall have a minimum vertical height, as measured from the top of the cone to the bottom of the bell, of32 inches. Eccentric cones with bolt down iÌame and cover to be installed flush to finish grade may have a minimum vertical height of24-inches. Concentric cones with a vertical height of20-inches may be used on manholes less than five (5') feet deep (4' diameter manhole only). Transition cone sections may be provided for an eccentric transition from a 60-inch riser to a 48-inch cone section to be placed directly beneath the 48-inch cone. e 4. Transition slabs may be placed a minimum of five (5) feet above the invert shelf for six (6) feet and larger diameter manholes where the slab will be buried. e 5. Joints between sections shall be manufactured in accordance with ASTM C-443. Joints shall be sealed with rubber gaskets in accordance with ASTM C-443"or with butyl rubber seals conforming to Federal Specifications SS-S-210A and AASHTO M- 198, Type B as manufactured by Kent Seal or an approved equal. 6. All markings required by ASTM C-478 shall be clearly stamped on the inside of each section. e 7. Aggregate shall be sound, crushed, angular granitic stone only, in accordance with ASTM C-33, except that the requirement for graduation in that standard shall not apply. Smooth or rounded stone (river rock) shall not be acceptable. 8. The cement shall be Type II with a maximum tricalcium aluminate (3CaOAh 03) content of 8%. e 9. Manhole riser sections, transition slabs, and cone sections shall be designed for H-20 loadings. 10. The manufacturer may be required to furnish the Water Resources Engineer with test results on compression and absorption for one section in every twenty-five sections poured, and certification from cement manufacturer and aggregate supplier certifying chemical content. The Engineer reserves the right to pick random sections for the required testing. 11. The manufacturer shall provide to the Water Resources Engineer a letter certifying that 10% of the manholes to be used on the project e 11-19 Sanitary Sewer Main Construction Division 11 e . e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL have successfully passed a Vacuum Test prior to shipment. Vacuum testing shall be in accordance with Division III Testing of these specifications. B. Steps: Manhole steps will be furnished in accordance with ASTM C-478 and current OSHA regulations. In addition to the testing requirements of ASTM C-478 each step installed in pre-cast manholes will be tested to resist a 1000lb pullout. The manhole manufacturer will furnish certification of each test with each shipment showing manhole location, date of test, and results. Refer to Standard Detail 12.07.00 of these Specifications. c. Grade Ad¡ustment: All adjustment to the manholes shall be done with concrete grade rings. A maximum grade adjustment of all manholes shall be with concrete grade rings shall be 12". Total adjustment from the top of the cone shall not exceed 21" including the 8- inch ring and lid. All manhole cast iron rings shall be bolted into the manhole cone through the concrete grade ring with 1¡2" diameter kwik bolt stub anchor system. Hilti Brand or an approved equal. Refer to Standard Details 12.01.00 through 12.05.00. D. Manhole Liners: Where indicated on the plans or elsewhere in these specifications, manholes shall be furnished with a liner for resistance to corrosive sewers. Manhole liner material shall be submitted by the Project Engineer and shall be approved by the Water Resources Engineer after examination and on a case by case basis. 6. FERROUS CASTINGS (CAST IRON RING AND COVERS) All manhole ring and covers shall be cast iron conform to ASTM A-48, Class 30 Dimensions shall conform to all dimensions of the Standard Detail 12.06.00 of these Specifications. Manhole ring and covers shall be furnished with the common contact surfaces between frame and cover machined. Frames and covers shall be Dewey Brothers RCR 2010, Vulcan VM-83, U.S. Foundry or approved equal. Frame and cover shall be free of sand holes, no plugging permitted. Casting shall be coated with tar epoxy while hot. Two vent holes shall be provided except where plans require a "water tight lid". Frame shall include 4 drilled holes for expansion anchors through the manhole cone. Where watertight frames and covers are specified, the watertight seal between frame and cover shall be accomplished by means of a rubber gasket. Watertight 11-20 Sanitary Sewer Main Construction Division 11 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL fÌ'ames and covers shall be Dewey Brothers RCR 20 lOW, Vulcan VM 1383. U.S. Foundry or approved equal. . 7. STEEL VENT PIPES Steel Vent Pipe: Unless otherwise specified. steel vents shall be Schedule 40 five inch (5") diameter steel pipe, consisting of Grade "B" steel as specified in ASTM A-139. All steel shall be Grade "B" only, with a minimum yield strength of35.000 P.S.!. The steel pipe shall have an inside coal tar lining 3/32 inch minimum thickness in accordance with A WW A C-203 or a coal tar epoxy lining conforming to that required for steel (aerial creek crossing) pipe. e Outside surface of pipe shall be sand or grit blasted to commercial standard and have one (1) coat of zinc chromate primer applied in accordance with Federal Specification TT -86a. Pipe shall be furnished with two (2) evenly applied coats of rust inhibiting enamel paint, either Koppers Glamortex No. 501 Enamel (Olive Green), Southern Coatings Rustaloy No. 0537 Enamel (Garden Green). or equal. e 8. STEEL ENCASEMENT AND TUNNELS A. Steel Encasement Pipe: Steel pipe shall be welded or seamless, smooth wall or spiral weld, consisting of Grade "B" steel as specified in ASTM A-139. Minimum yield strength shall be 35.000 PSI; and pipe thickness shall be as specified for each individual jo b. e All pipe shall be furnished with beveled ends prepared for field welding of circum:ftentialjoints. All burrs at pipe ends shall be removed. Encasement pipe must be approved by the appropriate controlling agency (D.O.T.. R.R.. etc.) and the Engineer prior to ordering. B. Structural Steel Tunnel Liner Plates: The tunnel liner plates shall be either the four (4) flange type (as approved for use within D.O.T. right-of-way) or the lap seam type (as approved for use within railroad right-of-way) fabricated to permit assembly of a continuous steel support system as the tunnel is excavated. Tunnel liner plates shall be fabricated fÌ'om hot rolled, e 11-21 Sanitary Sewer Main Construction Division 1 I e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL carbon steel sheets or plates conforming to the specifications of ASTM A- 569. The tunnel liner shall be designed in accordance with the requirements of Section 16-Division I and constructed to confonn to Section 25-Division It of the current or interim AASHTO Standard Specifications for Highway Bridges. Liner plates shall be galvanized in accordance with AASHTO M167 and fully bituminously coated in accordance with AASHTO M190. All hardware necessary to the tunneling operation shall be hot-dip galvanized in accordance with ASTM A-153 prior to bituminous coating application. Hardware shall COnfOffi1 to ASTM Specification A-307, Grade A. The minimum mechanical properties of the flat steel plate before cold forming used for the design of the tunnel liner shall be: 1. Minimum Tensile Strength of Liner Plates: 42,000 P.S.I. 2. Minimum Yield Strength of Liner Plates: 28,000 P.S.I. 3. Steel Liner Plates must be approved by the appropriate controlling agency (DOT, Railroad, etc.) and the Engineer prior to ordering. Gauge or thickness of liner plates will be as noted on the plans and elsewhere in these specifications. 4. Maximum Elongation, 2-inches"'" 30 percent 5. The moment of inertia shall be .042 inches to the 4th power per inch of width for four-flange 12-gage liner plate. C. Steel Reinforcing For Concrete: 1. Bars: All reinforcement bars shall confonn to the Standard Specifications for BILLET -STEEL BARS FOR CONCRETE, REINFORCEMENT, ASTM A-615. All bars shall be defonned and of structural Grade 60. 2. Wire: All reinforcement wire fabric shall conform to the Standard Specifications for WELDED STEEL WIRE FABRIC FOR CONCRETE REINFORCEMENT, ASTM A-185. 11-22 Sanitary Sewer Main Construction Division 11 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 9. AERIAL CROSSINGS (DIP, ANCHORS AND STRAPS) 1. Pipe: All aerial crossing shall be limited to restrained joint DIP pipe rated for sewer use. Approved DIP pipe shall be Griffin "SewperCoat" or U.S. Pipe 401 Protecto. All DIP shall be restrained joint. Acceptable restrained joint connection shall be TR-Flex Bell and Spigot or restrained joint or MJ connections with Mega-Lug restrain joint fittings. Field Lock Retrained Joint Pipe shall not be permitted. Project Engineer may be pennitted to submit alternative designs with regards to aerial crossing. Final approval will be given by the Water Resources Engineer on a case by case basis. e 2. Concrete Piers: Concrete piers shall be constructed in accordance with the Standard 88-12 and the Concrete Specifications contained in the these specifications. e 3. Steel Straps And Anchors: All pipe and/or pier straps shall conform to the requirements of ASTM A-36 with a minimum yield strength of 36,000 P.S.I. Finished straps and anchors shall be galvanized in accordance with ASTM A-153. The entire strap and all exposed surfaces of anchors and/or bolts (and nuts) shall be fully bitwninously coated in accordance with AASHTO M-190. Anchor bolts (non-head) shall conform to ASTM A-36 with tension test to be made (as required) on the bolt body or on the bar stock used for making the anchor bolts. Unless otherwise specified all other fasteners shall conform to ASTM A-307 for carbon steel externally and internally threaded standard fasteners Grade A or B. e 10. CONCRETE A. Portland Cement: All concrete shall conform to the Standard Specifications for READY NllXED CONCRETE, ASTM C-94. An air-entraining admixture, conforming to ASTM C-260, shall be added to either Type I, Type II, or Type III Portland Cement. Fly Ash conforming to ASTM C- 618 for Class C Fly Ash may be added to the concrete mix but shall not be considered as replacement for more than 10% of the cement therein (strengths shall not be less than hereinafter required). e Types I, lA, III and IlIA Portland Cement shall OIÙy be used for manhole inverts, concrete encasement, concrete blocking, and/or as directed by the Engineer, and shall conform to ASTM C-150. Types II and IIA Portland Cement shall be used in pre-cast manholes, cast in place manhole structures, reinforced concrete pipe, reinforced concrete e 11-23 Sanitary Sewer Main Construction Division 11 e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL piers and concrete or reinforced concrete rip-rap as directed by the Engineer, and shall conform to ASTM C-150 except that Tri-calcium Aluminate (3CaOAh03) content shall not exceed 8%. B. Aggregates: All aggregates used for concrete shall conform to ASTM C-33 and shall be checked daily for any variances in moisture content. Said variances shall be corrected and/or taken into consideration for each batch. 1. Coarse Aggregates: Shall be unifonnly and evenly graded for each application in accordance with A.C.I . Standard 318. Unless otherwise approved, aggregate shall be sound, crushed, angular granite stone. Smooth or rounded stone (river rock) shall not be acceptable. 2. Fine Aggregates: Shall consist of natural sand, manufactured sand or a combination thereof Fine aggregates shall conform to the sieve analysis as specified in paragraph 4.1 of the standard except that the percent passing a No. 50 sieve shall not exceed 5% and the percent passing a No. I 00 sieve shall be 0% as provided for in paragraph 4.2 of the standard. C. Mix Design: Concrete shall be watertight, resistant to freeze-thaw cycles and moderate sulfate attack, abrasion resistant, workable, and/or finishable. These qualities may be met through the use of adnùxtures (if and only if approved in the mix design as hereinafter specified) conforming to the appropriate ASTM with the exception of the use of calcium chloride, which shall be limited to no more than 1 % by cement weight - thoroughly mixed to insure uniform distribution within the mix. If the concrete is used with reinforcing steel, !lQ calcium chloride will be allowed. The Contractor shall assume responsibility for concrete mixture. The concrete shall be proportioned to meet the following requirements: (Note: This mix does not apply "in total" to pre-cast manhole or reinforced concrete pipe). 1. Compressive Strength Minimum 3600 PSI 2. Water-Cement Ratio By Weight Maximum-0.50 3. Slump Min. 3", Max. 5" 4. Air Content (Entrained &Entrapped) Min. 4% Max. 6% 5. Coarse Aggregate 3/4"-1 1/2 (as required by the application) When required by the Water Resources Engineer, and prior to beginning construction, the Contractor, at ills expense, shall obtain from an approved commercial testing laboratory a design for a suitable concrete mix and subrrût same with ills list of materials and material suppliers for approval. 11-24 Sanitary Sewer Main Construction Division 11 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL D. Curing Compound: All concrete curing compounds shall conform to the e standard specifications for LIQUID MEMBRANE - FORlvIING COMPOUNDS FOR CURING CONCRETE, ASTM C-309, Type 2. Curing compounds shall be applied as forms are stripped. E. Grouts: All grouts shall be ofa non-shrink nature (as may be achieved through additives or proportioning) and depending upon application range from plastic to flowable cement water paste. Testing as specified above for concrete may be required for acceptance of grouts to include frequent checks for consistency by a time-of-flow measurement. e Expansion grouts shall be either Gilco pre-mixed or Supreme non-metallic grout as manufactured by Gifford-Hill and Company, Incorporated, or Embeco 636 grout as manufactured by Master Builders or equal. Acceptable range oftesting requirements: Compressive Strength: 10,500 to 12,500 PSI Bond Strength: 1,350 to 1,700 PSI % Expansion: +.025% to +0.75% e Expansion grouts shall be used only as directed by the Water Resources Engineer. Grout shall be mixed (if Applicable) and placed in accordance with the manufacturer's current recommendations, for each specific application. F. Mortar: Mortar used in sanitary sewer manholes shall be hydraulic cement mortar in accordance with ASTM C-398. e II. STONE A. Granular Bedding Material: All bedding material shall be angular, clean washed crushed stone graded in accordance with Size #67 in ASTM D- 448 for "Standard Sizes of Coarse Aggregate", (NCDOT Standard size #67). Bedding material will be used only as instructed in the Specifications and/or as specifically directed by the Water Resources Engineer. B. Stone Stabilization Material: All stone stabilization material shall be angular, clean washed crushed stone graded in accordance with standard sizes #467 in ASTM D-448, (NCDOT Standard size #467M). e 11-25 Sanitary Sewer Main Construction Division 11 e e e e - CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL C. Silt Check Dam Material: Shall be coarse angular, clean washed crushed stone, gravel, or rock, well graded, and ranging in size from 2-Ïnches to 6-inches, (NCDOT stone for erosion control-Class A). D. Rip Rap: All rip rap shall consist of clean field stone or rough unhewn quarry stone, resistant to the action of air and water, varying in weight from 25 to 250 pounds with 60% weighing a minimum of 100 pounds each and no more than 5% weighing less than 50 pOWlds each, (NCDOT Class 2 Rip Rap). Rip rap will be placed :&om a minimum of 4.0 feet below the toe of the bank to top of the bank in areas detennined by field conditions. Rip rap thickness shall be 1 1/2 times the diameter ofthe largest stones used, or 2.0 feet, whichever is greater. 11-26 Sanitary Sewer Main Construction Division 11 e e THIS PAGE IS INTENTIONALLY LEFT BLANK e e e '. . - e e 11.02.04 Shop Drawings Materials List Necessary Materials for a Sewer Main Extension. (If not applicable to the specific project onút fi-om the form) Project Name: Form Submitted By: Supplier: Address: Supplier Contact Person: Phone Number: I MATERIALS I MANUFACTURER I MODEL # IE] Pipe Class SDR-35 PVC Pipe Class 350 DIP Pipe C900 SDR-25 PVC Manholes Manhole Ring and Cover Service Lateral Pipe and Fittings Butyl Rubber Joint Sealant Concrete Grade Rings 1/2" Diameter Kwik Bolt Anchor System Manufacturer Certification Letter (Manholes) Approved By City of Monroe Date 11-27 Sanitary Sewer Main Materials Division 11 e . THIS PAGE IS INTENTIONALLY LEFT BLANK e e e · e e e e CITY OF MONROE ST ANDARD SPECIFICATIONS AND DETAIL MANUAL 11.03 CONSTRUCTION, INSTALLATION AND TESTING OF SANITARY SEWER MAINS The Contractor shall furnish all materials, equipment and labor required to construct the project as outlined in these specifications and accompanying plans. 11.03.01 HANDLING AND STORAGE OF MATERIALS The Contractor shall be responsible for the safe storage of materials furnished by or to him, and accepted by him and intended for the work, until they have been incorporated in the completed project. The interior of all pipe, manholes and other accessories shall be kept free from dirt and foreign materials at all times. 1. Transportation of Materials and Equipment: The Contractor and his Suppliers are directed to contact the North Carolina Department of Transportation to verify axle load linùts on State maintained roads (and bridges) which would be used for hauling of equipment and materials for this project. The Contractor and his Suppliers shall do all that is necessary to satisfy the Department of Transportation requirements and will be responsible for any damage to said roads which may be attributed to this project. All materials furnished by the contractor shall be delivered and distributed at the site by the Contractor or his material supplier. 2. Loading and Unloading Materials: Ductile iron pipe and cast iron accessories shall be loaded and unloaded by lifting with hoists or skidding so as to avoid shock or damage. Concrete pipe, clay pipe, and precast manholes will be unloaded with hoists and/or as recommended by the respective manufacturers. Under no circumstances shall such materials be dropped. Pipe handled on skid ways shall not be skidded or rolled against pipe already on the ground. 3. Responsibilitv for Materials on Site: In distributing the material at the site of the work, each piece shall be unloaded opposite or near the place where it is to be laid in the trench. Pedestrian or vehicular traffic shall not be unduly inconvenienced in placing of material along the streets or right-of-way, as applicable. The Contractor will string in advance no more than the amount of pipe and material that can be installed within one (1) week or less as approved by the Water Resources Engineer. All the materials shall be placed in such a manner as not to hinder access, endanger or impede traffic, or create a public nuisance. Materials strung through residential areas (or any area with maintained lawns) shall be placed in such a manner as not to restrict normal maintenance of established lawns, and must either be installed within one 11-28 Sanitary Sewer Main Construction Division 11 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 11.03.02 week or removed to an approved storage yard, as required by the Water Resources Engineer. e 4. Material and Equipment Storalfe: The Contractor will be responsible for locating and providing storage areas for construction materials and equipment. Unless prior written consent :&om the owner of the proposed storage area is obtainedby the Contractor with written notice to the Water Resources Engineer. The Contractor will be required to store all equipment and materials within the limits of the sanitary sewer riqht-of-way and temporary construction easement provided. The materials and equipment storage shall comply with a.lllocal and state ordinances throughout the construction period. Material and equipment may only be stored within road right-of-way if approved by the controlling agency. . The Contractor shall be responsible for the safeguarding of materials and equipment against fire, theft, and vandalism and shall not hold the City responsible in any way for the occurrence of the same. 5. Care of Coatings and Linings: Pre-cast manholes, pipe and fittings, including rings and covers, steps, straps, etc., shall be so handled that the coating or lining will not be damaged. If, however, any part of the coating or lining is damaged, the repair shall be made by the Contractor at his expense in a manner satisfactory to the Water Resources Engineer. e CONNECTION TO EXISTING SEWERS Tie-ins to existing activated sewer lines will be allowed when proper precautions are taken to protect the existing main. Tie-ins to existing non-activated sewer lines not installed under the same contract will not be allowed without written approval ITom all parties involved (City of Monroe, contractors, contract holders, etc.). The Contractor will be required to install watertight masonry plugs in the proposed pipeline at the existing manhole and at the first proposed manhole until all e construction is completed and testing begun. If the proposed sewer does not begin at an existing manhole, a straddle type "Doghouse" manhole as shown on the Standard Detail 12.04.00 ofthese Specifications will be constructed over (and around) the undisturbed existing pipeline and the proposed pipeline plugged as specified. The existing pipeline will not be broken-out and the new invert formed until all testing has been successfully completed. Any connection with 18-inch and smaller pipe at an existing pre-cast or cast-in-place manhole will require the Contractor to core the necessary opening through the manhole wall. Connections to existing manholes with 2 I-inch and larger pipe may be cored or sawed as approved by the Water Resources Engineer. e 11-29 Sanitary Sewer Main Construction Division 11 e . e e e CITY OF MONROE ST ANDARD SPECIFICATIONS AND DETAIL MANUAL 1. Temporary Watertight Plugs: The Contractor shall install temporary watertight plugs in the proposed sewer line at any manhole that is incomplete, at the open end of the pipeline prior to leaving the job site daily and elsewhere as dictated by good engineering and construction practices. All installed pipe shall be backfilled or otherwise securely tied down to prevent flotation in the event water enters or rises in the trench. The plugs as installed shall prevent infiltration or the introduction of any foreign material into either the existing or proposed systems. The City will not accept any pipeline or manhole, which contains any silt, sedimentation or other foreign material, within. The Contractor shall at his own expense flush, or otherwise cause the line (and manholes) to be cleaned out without any discharge into the existing system. Upon completion of all construction, the Contractor will be responsible for the complete removal of all watertight plugs, in the sequence necessary to allow testing and subsequent activation, all under the direction of the Water Resources Engineer. 2. Scheduling: When the flow of an existing sewer must be interrupted and/or bypassed, the Contractor shall, before beginning any construction, submit a work schedule which will minimize the interruption and/or bypassing of wastewater flow during construction. This schedule must be approved by the appropriate controlling agencies and Water Resources Engineer and may require night, holiday, and/or weekend work. 3. Bypass Pumping: If pumping is required, an identical standby pump shall be on site in the event of failure of the primary pump. If, at any time during construction, effluent :trom the existing sewer is not fully contained by the bypass system, gravity service will be restored by a temporary tie to the new construction and work shall be suspended until the problem is resolved to the satisfaction of the Water Resources Engineer. The Contractor shall be responsible for any fines or claims levied as a result of wastewater backup or spill. The Contractor will be required to verifY his method of handling sewer flows during construction by dumping at peak flows for 1 hour as approved the Water Resources Engineer. 11-30 Sanitary Sewer Main Construction Division 11 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 11.03.03 EXISTING UTILITIES The Developer/Contractor shall be responsible for all costs associated with an adjustment, relocating or modification of existing city infrastructure that was the result of the construction of the proposed sewer mains or other improvements in the area. e The Contractor will be required to excavate to determine the precise location of utilities, or other underground obstructions, which are shown on the Construction Plans. Such location and excavation shall be at least 500 feet ahead of construction. AIl utility owners will be notified prior to excavation as required by the 1985 a Underground Damage Prevention Act. Owners who are members of North Carolina ,., One-Call may be notified in accordance with current North Carolina One-Call procedures. The Contractor will be fully responsible for damage to any utilities if the owners have not been properly notified as required by the Underground Damage Prevention Act. Utility owners may, at their option, have representatives present to supervise excavation in the vicinity of their utilities. The cost of such supervision, if any, shall be borne by the Contractor. Conflicts with underground utilities may necessitate changes in the alignment and/or grade of this construction. All changes will be approved by the Water Resources Engineer before the construction proceeds. e When underground obstructions not shown on the Construction Plans are encountered, the Contractor shall promptly report the conflict to the Water Resources Engineer and shall not proceed with construction until the conflict is resolved. Whenever a sewer main crosses under other utility lines (gas, telephone conduit, storm drain, etc.) there shall be 2 feet clearance between the top of the sewer and the bottom of the affected utility. Stone bedding shall be used from 6-inches below the e sewer to 12-inches above the sewer from one foot outside the utility trench. If this clearance is not possible, the sewer line shall be Ductile Iron Pipe from one foot outside the utility trench with a minimum length of 10 feet. Whenever a sewer main crosses over or under other utility lines (stonn drain, gas, encased or capped telephone conduit, etc.) the following will apply: For PVC sewer lines - There shall be one-foot clearance from the top of the utility to the bottom of the sewer. If this clearance is not possible the sewer line shall be ductile iron pipe from one foot outside the utility trench with a minimwn length of 10 e feet on each side of the utility. If the sewer main crosses under an existing or 1 I -31 Sanitary Sewer Main Construction Division 11 e e e e "e 11.03.04 11.03.05 CITY OF MONROE ST ANDARD SPECIFICATIONS AND DETAIL MANUAL proposed storm drain pipe. DIP shall be used in all cases a minimum distance of 10 feet on each side of the storm drain pipe. SEWER LINE / WATER LINE CLEARANCE When a sewer main or lateral crosses or is parallel to an existing water main, the Contractor shall install ductile iron pipe (including laterals) for the sewer main and water main as described below. 1. Vertical Separation of Sewer Lines & Water Lines: Whenever it is necessary for a sewer main to cross under a water main with less than 18-inches of vertical separation, the water main shall be constructed of ductile iron pipe for a distance of 10 feet on each side of the point of crossing. Whenever it is necessary for a sewer main to cross over a water main, the sewer main and water main shall be constructed of ductile iron pipe, with joints meeting water main standards, for a distance of 10 feet on each side of the point of crossing. 2. Horizontal Separation of Sewer Lines and Water Lines: Sewer mains shall be laid a least 10 feet horizontally from existing or proposed water mains unless local conditions or barriers prevent a 1 0- foot horizontal separation. In that case, the sewer main will be laid in a separate trench, with the elevation of the bottom of the water main atleast 18-inches above the top of the sewer. When these conditions are not met the sewer main and water main shall be constructed of Ductile Iron Pipe with joints meeting water main standards. 3. Horizontal Se{>aration of Sewer Lines and Water Wells: Sewer lines shall be installed at least 100 feet from water wells. Where this separation is not possible the sewer line shall be ductile iron pipe. Sewer lines shall not be installed within 25 feet of any private well or within 50 feet of any community well. CLEARING Unless otherwise specified, the entire permanent right-of-way shall be cleared and all stumps, limbs and trash removed and disposed of at an approved location. \\!hen the sewer line is installed in undeveloped/non...maintained areas (woods), stumps can be left flush with the ground if they are outside the trench excavation. Stumps must be removed from all maintained areas (yards, lawns, etc.). Temporary construction easements will be selectively cleared with specimen trees left standing as stipulated in Special Provisions and/or right-of-way agreements. No 11-32 Sanitary Sewer Main Construction Division 11 CITY OF MONROE ST ANDARD SPECIFICA nONS AND DETAIL MANUAL clearing or grubbing may be perfonned on rights-of-way except under supervision of the Project Inspector. _ Useable timber and/or firewood may be left on adjoining property, off the pennanent right-of-way at the request of or with the consent of the property owner. Such requests must be in writing and must release the City :&om any claims for improper disposal of timber. The Contractor shall abide by all special conditions contained in the right-of-way agreements for this project. When the right-of-way agreement specifies stacking timber or firewood adjacent to the right-of-way, a written release is not required. The Contractor shall verify cut lengths of timber/firewood for such placement and location with the property owner. e Fences removed during construction shall be replaced ofthe same material and to the same condition existing prior to the construction. The Contractor shall confine all his operations to the bounds as set forth in all rights- of-way unless prior written approval of the current property owner is obtained and submitted to the Water Resources Engineer for his approval. 11.03.06 EXCAVATION e All excavations for pipe laying, manholes, piers, drainage ditches, grading and any other excavation required for the proper completion ofa project shall be included herein. Excavation within street rights-of-way shall be backfilled when left unattended for more than 1 hour unless otherwise approved by the controlling agency. Excavations within sewer/water rights-of-way shall be backfilled, fenced or otherwise protected when left unattended for more than 1 hour. Fencing or other protection methods shall A be designed to reasonably prevent people and large animals :&om entering the WI' excavation. 1. Trench Excavation: No more trench (100 ± LF) shall be opened in advance of the pipe laying than is necessary to expedite the work unless prior approval is given by the Water Resources Engineer. Ground conditions and/or location requirements shall govern the amount oftrench open at anyone time as determined by the Water Resources Engineer. a. Trench Width: The trench width shall be the installed pipe outside diameter plus 12" clearance on each side of the pipe to the trench wall to allow for compaction and fill material. Ifthe actual trench width exceeds the specified width, due to shoring e 11-33 Sanitary Sewer Main Construction Division 11 e e e e e CITY OF MONROE 2. ST ANDARD SPECIFICATIONS AND DET AlL MANUAL methods, the contractor must obtain approval from the Water Reso urces Engineer. Trench width shall be measured between faces of cut at the top of the pipe bell. If the Contractor varies from this requirement without prior approval ofthe Water Resources Engineer, or if specified trench widths cannot be maintained, improved bedding and/or improved pipe material shall be installed as directed by the Water Resources Engineer. b. Trench Bottom Conformation: The excavation shall be made to the elevations, grades, and lines shown on the Construction Plans unless otherwise approved by the Water Resources Engineer. For 8" ~ 18" sanitary sewer mains the trench bottom shall be 4-inches below the installed invert of the pipe. For sanitary sewer main larger then 18" the trench bottom shall be detennined based upon the material specifications of the pipe used. The trench bottom shall be true and even with bell holes at each joint to provide the barrel of the pipe with soil and/or granular bedding (as applicable) support for its full length. This should prevent point 10adÙ1g at the bells. If the trench bottom is inadvertently cut below grade, the Contractor shall fill it to grade with approved material thorougWy tamped. Pipe depth and/or soil conditions may dictate a granular embedment as specified below. Such bedding shall also be shaped to allow adequate support of the pipe along the full length of the barrel. If the trench passes either under or over another pipeline or previous excavation, the trench bottom in this area shall be tamped, if necessary, so the disturbed soil has approximately the same supportive strength as the native soil. Excavation for Structures: The excavation shall be made to the lines, grades and elevations shown on the Plans and Standard Details. The area excavated shall be limited to no more than is necessary to allow the proper installation of the structure as detennined by the Water Resources Engineer. The excavation shall remain open no longer than is necessary to allow the proper and complete installation of the structure. a. Structure Pit Bottom Conformation: The pit bottom shall be true and even, and capable of supporting the structure as determined by the Water Resources Engineer. If the pit bottom 11- 34 Sanitary Sewer MaÙ1 Construction Division II CITY OF MONROE STANDARD SPECIFICATIONS AND DET AlL MANUAL is inadvertently cut below grade, the Contractor shall fill it to the proper elevation with approved material capable of e continually maintaining adequate supportive strength. 3. Excavation for Bore Pits: The excavation shall be controlled by the linùts of the existing rights-of-way and shall not exceed these without prior written approval ofthe current property owner. The excavation shall be made to the proper elevation, line and grade as required to install the casing pipe as shown on the construction plans. a. Bore Pit Conformation: The pit bottom shall be true and even with adequate stabilization to maintain proper elevation and grade on the boring rig for the duration of the bore. e 4. Rock Excavation: Rock excavation shall be defined as solid ledge rock that requires drilling and blasting, sledging, or barring for its removal. Soft, disintegrated rock that can be removed with a pick shall not be classified as solid rock. Boulders greater than one cubic yard in volume will also be considered rock excavation. Smaller boulders and soft rock, which in the opinion of the Water Resources Engineer can be excavated by the use ofa power shovel, without undue delay, shall not be classified as rock. e Rock shall be removed to a depth of six (6) inches below the pipe bell and to the trench widths specified for each size and type of pipe installed. Rock around structures shall be removed to the same twelve (12) inch minimum as measured between vertical planes around the structure, but only to a depth necessary to allow proper installation. Over excavation of rock due to removal methods, or for safety considerations, shall be the Contractor's responsibility. At no additional cost to the City. e When rock removal is necessary for pipeline installation either Type II or Type III bedding shall be installed as specified and directed by the Water Resources Engineer. All blasting shall be conducted in a manner as specified elsewhere in these Specifications. 5. Piling Excavated Material: All excavated material shall be piled in a manner that will not endanger the work. Excavated material will be piled a safe distance away :&om the edge of the excavation allowing room for an adequate angle of repose and if shoring, sheeting, and bracing is used to protect the excavation, no material will be piled e 11-35 Sanitary Sewer Main Construction Division 11 e e e e '. CITY OF MONROE ST ANDARD SPECIFICATIONS AND DETAIL MANUAL within three (3) feet of the nearest edge. Sidewalks, driveways, hydrants, valve pit covers, valve boxes, curb stop boxes, existìng manholes, fire and police call boxes, or other utility controls shall be unobstructed and accessible until the work is completed. Gutters, catch basins, and natural watercourses shall not be obstructed or silted. When working in close proximity with a creek channel or natural watercourse the Contractor shall pile all excavated material on the side of his excavation away from the watercourse. 6. De-watering: The Contractor shall at all times provide and maintain ample means and equipment with which to remove and properly dispose of any and all water entering the excavation or other parts of the work and keep all excavations dry until such time as pipe laying and grading is completed and structures to be built therein are completed. No water shall be allowed to rise around the pipe in unbackfilled trenches nor shall it be allowed to rise over masonry until the concrete or mortar has set (minimum 24 hours). All water pumped or drained from the work shall be disposed of in such a manner as to prevent siltation and erosion to adjacent property or other construction. 7. Shoring And Shielding: The Contractor shall comply with OSHA trenching and excavation regulations as revised in Subpart P of Part 1926 in the Federal Register. Shoring and/or shielding systems shall be used as specified in Subpart P to prevent caving of trench banks and to provide a safe excavation. The Contractor will be responsible for excavation safety and shall designate his "competent person" (as defined in Subpart P) for the determination of proper shielding/shoring systems. If, in the opinion ofthe Water Resources Engineer, the trench/excavation is not in compliance with OSHA regulations, the Contractor may be directed to stop work. Continued unsafe conditions will be reported to the appropriate regulatory agency. The Contractor will be responsible for paying all fines resulting from safety violations. 11-36 Sanitary Sewer Main Construction Division 11 CITY OF MONROE ST ANDARD SPECIFICATIONS AND DEI AIL MANUAL 11.03.07 PIPE LAYING In all instances pipe shall be laid in a workmanlike manner, true to line and grade, with bell ends facing upgrade in the direction of laying. The various pipes referred to herein shall be handled, belled up and laid in accordance with the manufacturer's requirements and good engineering practices as defined in the various publications referenced in this document. The following requirements and/or standards of the City of Monroe shall govern this construction unless exceeded by other regulatory bodies. 1. Pipe Bedding: Unless otherwise specified or noted on the Plans the following bedding classes are as required by this Department. When granular material embedment is required, the Contractor will fo llow the layered procedure specified in Type I for soil placement, above the granular bedding, to an elevation one (1) foot above the top of the pipe bell. a. Type I - Shaped Bottom Bedding: The trench bottom shall be shaped so the pipe bears uniformly upon undisturbed native earth. Soil shall then be placed by hand around the pipe and completely under the pipe haunches in uniform layers not exceeding six (6) inches in depth up to an elevation one (1) foot above the top of the pipe bell. Each layer shall be placed and then carefully and uniformly tamped, so that the pipe is not damaged nor the alignment disturbed. b. Tvpe II - Granular Material Embedment: The trench bottom shall be undercut a minimum of four (4) inches below the pipe barrel grade and filled with an approved stone to an elevation such that the pipe will be completely and uniformly bedded to a vertical height of one-third the outside diameter of the pipe bell for the pipe's entire length and for the entire width of the ditch. Depending upon soil and ground water conditions, greater depths (undercut) may be required to create a stable condition. Type II granular material embedment shall be used as directed by the Water Reso urces Engineer. c. Type 1Il- Granular Material Embedment: The trench bottom shall be undercut a minimum of four (4) inches below the pipe barrel grade and filled with an approved stone to an elevation such that the pipe will be completely and uniformly bedded to vertical height of(2) inches above the top of the pipe for the pipe's entire length and for the entire width ofthe ditch. Depending upon soil and ground water conditions, greater depths (undercut) may be required to create a stable condition. Type III granular material embedment (#67 Washed Stone) shall be used on all PVC SDR-35 sanitary sewer mains and as directed by the Water Resources Engineer. 11-37 Sanitary Sewer Main Construction Division 11 e . e e e e . e e . CITY OF MONROE STANDARD SPECIFICA nONS AND DETAIL MANUAL d. Stone Stabilization: When the bottom of the trench is not sufficiently stable to prevent vertical or lateral displacement of the pipe after installation with Type II or Type III bedding, stone stabilization will be required to develop a non- yielding foundation for the bedding and pipe. When such conditions are encountered, the trench will be excavated to a depth determined by the Water Resources Engineer, and #67 crushed stone will be placed to an elevation six-inches below the bottom of the pipe. The pipe will then be laid with Type II or Type III bedding as directed by the Water Resources Engineer. e. Concrete Encasement and Cradles: Shall be as designed for each individual case and will be noted on the Plans and in the Special Provisions when applicable. 2. Installation Depth Limitations: The following are limitations and bedding requirements for supportive strength and shall be adhered to at all times. Granular material embedment may still be required for lesser depths of cover should groundwater and/or soil conditions warrant its use, as determined by the Water Reso urces Engineer. All pipes regardless of bedding or pipe type shall require adequate tamping of backfill as specified for Type I, Shaped Bottom Bedding. When the cover is less than 3.0 feet or greater than the depths shown for Type III Bedding, Ductile Iron Pipe must be used. a. Ductile Iron Pipe: Installation of Ductile Iron Pipe shall be installed subject to the bedding limitations specified below, based on a deflection limit of three (3) percent. Greaterdepths of cover may be achieved by using a higher pressure classification and/or using pipe with a flexible lining. Ductile Iron Pipe, Class 350 or Class 250 may be used with Type I Shaped Bottom Bedding at depths up to 20 feet to invert grade UIÙess otherwise required. Depths between 20 to 30 feet to invert grade require at least Type II Granular Embedment Material, and depths greater than 30 feet require Type III Granular Embedment Material. b. Poly VinvI Chloride (PVC) Pipe: PVC SDR-35 pipe shall be installed with a minimum of 3.0 feet of cover and a maximum of 12 feet of cover. When the cover is less than 3.0 feet or more than 12 feet, Ductile Iron Pipe must be used subject to the specified bedding limits. PVC pipe shall be installed in accordance with ASTM D-232 I with the following modifications: 11-38 Sanitary Sewer Main Construction Division 11 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL All PVC-SDR 35 pipe shall be installed using Type III Granular Embedment. The bedding shall extend from the pipe to the trench wall _ or to two and one halfpipe diameters (OD) on each side of the pipe, ., whichever is less. c. Poly VinvI Chloride (PVC C900) Pipe: PVC SDR-25 pipe shall be installed with a minimum of3.0 feet of cover and a maximum of20 feet of cover. When the cover is less than 3.0 feet or more than 20 feet, Ductile Iron Pipe must be used subject to the specified bedding limits. PVC pipe shall be installed in accordance with ASTM D-2321 with the following modifications: All PVC C900 SDR-25 pipe shall be installed using Type II Granular Embedment. The bedding shall extend fÌom the pipe to the trench wall or to two and one half pipe diameters (OD) on each side ofthe pipe, whichever is less. 3. Grade and Line For pipe: As a minimum, centerline hubs will be set at each manhole and offset stakes set at each manhole, and ifrequired at 100 foot intervals between manholes. Cut sheets will show the vertical distance fÌom the offset stakes to the inlet and outlet pipe invert at each manhole and to the pipe invert at each offset stake. Laser beams shall be used to set line and grade. The grade shall be checked at each manhole and at benchmarks every 500 feet. The Contractor shall keep close check of his laser for variations in line and grade. No variations between manholes shall be corrected without relaying that portion of line, which has deviated fÌom line or grade unless otherwise approved by the Water Resources Engineer. . e The Contractor shall keep accurate field notes to' verify the correct grade has been installed for each pipe length between manholes with the use of a level _ and benchmark. A copy of the field notes shall be made readily available to ., the City ofMomoe Water Resources Department Inspector or representative upon request at all times during construction. 11.03.08 LATERAL INSTALLATION 1. 4-lnch Laterals: Four inch laterals shall be connected to the main with tees as previously specified if the lateral is installed during the construction of the main. 4-inch laterals shall be connected to existing mains with saddles placed in holes cored by an approved coring machine. Saddles and tees shall be as previously specified and as shown on the Standard Details. 11-39 Sanitary Sewer Main Construction Division 11 e . . e e . CITY OF MONROE ST ANDARD SPECIFIC A nONS AND DETAIL MANUAL Laterals shall be completed to the property line using 22-1/2 0 bends at the tee or saddle and pipe as previously specified and as shown in the Standard Detail 12.13.00 ofthese Specifications. The lateral shall be laid with a minimum slope of l/8-inch per foot or 1 % slope. The end of the lateral will be plugged water/air tight. All tees saddles and bends shall be completely encased in #67 washed stone. An "S" shall be cut in the curb at the location where lateral crosses under curb. In subdivisions constructed without curb, the Contractor will paint an "S" on the edge of pavement at the location where the lateral crosses under the edge of pavement. Markings will be made using green paint. All laterals except those serving lots adjacent to in line manholes or upstream from dead-end manholes in cul-de-sacs shall be connected to the sewer main. Laterals connected to manholes shall be laid on a line from the center of the lot to the center of the manhole and shall extend not more than six inches inside the manhole wall. Manholes in cul-de-sacs shall have a maximum of three (3) laterals. Any in line manhole shall have a maximum of two (2) laterals. The lateral elevation entering the manhole shall match crown to crown with the main entering the manhole and a trough shall be fOID1ed for the lateral invert. Laterals that are connected to outfall lines shall enter the manhole at the shelf and an invert shall be formed to carry the lateral flow to the main invert. The laterals shall be installed with a minimum of four (4) feet of cover at the property line, unless otherwise approved by City of Monroe. The depth of the lateral at the property Line shall not be greater than five (5) feet unless greater depth is required to serve the building. The Contractor will not backfill any portion of the lateral until the installation is approved by a City of Monroe Inspector. Measurements: The Inspector, assisted by the Contractor, will measure the distance to the tee or tap :tì-om the down-stream manhole to obtain the information required for the "As-Built" records. 2. 6-lnch And Larger Laterals: 6-inch and larger diameter laterals shall connect to manholes with the lateral invert above the manhole shelf in accordance with the specifications and standard details for mainline construction. When the lateral is the same diameter as the main line pipe, a drop of 0.2 feet will be provided in the manhole between the invert of the lateral and the invert of the main line pipe. The lateral shall be laid with a minimum slope of 1 18-inch per foot (1 %). 11-40 Sanitary Sewer Main Construction Division 11 CITY OF MONROE STANDARD SPECIFICATIONS 'AND DETAIL MANUAL 11.03.09 BACKFILL All backfill shall be of a non-plastic nature free from roots, vegetative matter, waste, construction material, rock larger than 3/4 cubic foot, or other objectionable material. Small rock (less than 3/4 cubic foot) shall not exceed 10% of the fill material. Rock shall not be placed within 3-feet ofthe pipeline or within three feet of the finished grade. Rock larger than 3/4 cubic foot will not be permitted within the trench. No objectionable or unsuitable material will be allowed in the backfill. Backfill material shall be capable of being tamped by mechanical tamps using relatively low velocity and heavy blows. The material shall have no tendency to flow or behave in a plastic manner under the tamping blows. Material deemed by the Water Resources Engineer as Wlsuitable for backfill purposes shall be removed from the job site before backfilling operations begin. When the Water Resources Engineer determines that the material excavated from the trench is unsuitable for backfill because of the material type or because it contains excessive debris, rock or organics, it shall be removed from the project and replaced with a backfill material approved by the Water Resources Engineer. When the moisture content of an otherwise suitable material is too high to achieve specified compactio~ as detennined by a moisture content and density test; the Contractor shall replace the material as necessary to meet backfill requirements. The wet material may be dried to optimum moisture content and used for backfill in subsequent phases of the project. Should an otherwise suitable material be found too dry to achieve compaction requirements, water may be added to the material to raise the moisture content to optimum. Borrow material placed at the direction of the Water Resources Engineer shall be clean earth at optimum moisture content, concord (pit) gravel or ABC stone. e e e Backfill shall be accomplished immediately after the pipe is laid. Backfill around pipe and to an elevation of one (1) foot above the pipe bell shall be done only by hand and in layers not exceeding six (6) inches with each and every layer thorougWy tamped. _ The first three (3) feet offill shall be completely free of rocks. Successive layers of WI' backfill shall be compacted in place as specified below. Under no circwnstances shall water be permitted to rise in unbackfilled trenches after the pipe has been placed. Should water rise in an unbackfilled ditch after the pipe has been placed, the Water Resources Engineer may require the Contractor to remove the pipe, muck the trench and follow the procedure for either TYlJe II or Type III Granular Embedment when relaying the pipe. 1. Backfill of trenches within sewer main rights-of-way: Trenches excavated outside existing roadway and railway right-of-way may be backfilled, above the initial one (1) foot, by mechanical means in layers up to twelve (12) inches thick unless otherwise directed by the Water Resources Engineer. 11-41 Sanitary Sewer Main Construction Division 11 e · e e e e CITY OF MONROE ST ANDARD SPECIFICA nONS AND DETAIL MANUAL 2. Backfill of trenches within road and railway rights-of-way: Trenches excavated within existing road and railway rights-of-way shall be backfilled in layers not to exceed six (6) inches and each successive layer shall be thoroughly tamped, as specified. 11.03.10 COMPACTION REQUIREMENTS When installing proposed sewer main in a City of Monroe Subdivision, the compaction requirement of the City of Monroe Engineering Department shall supersede all requirements listed below Compaction shall be attained by the use of mechanical tamps only. Each layer of backfill shall be placed loose and thoroughly compacted in place. Heavy rollers, vehicles or other equipment shall not be used for compacting pipeline and structure backfill nor allowed to cross over completed work except at points adjudged capable of adequately protecting the pipeline. Pnewnatic tamps, gasoline ram type tamps or vibrating tamps with sheepsfoot rollers will be required to meet the specifications of "Mechanical Tamp". Variances shall only be with the explicit approval of the Water Resources Engineer. 1. Compaction Within Sewer Rights-of-way: Trenches excavated outside existing road and railway rights-of-way shall be backfilled as hereinbefore specified and tamped thoroughly: a. All material shall have an in-place density of at least 85% of maximum dry density or as approved by the Water Resources Engineer. 2. b. Should any public or private roadways, service roads, drives, etc. be encountered during this construction, the Contractor shall at the Water Resources Engineer's direction comply with those compaction requirements specified below for work within road and railway rights- of-way. Compaction Within Road and Railway Ril!hts-of- Way: Unless otherwise approved by the controlling agencies, trenches excavated within existing road and railway rights-of-way and all structure excavation regardless oflocation shall be backfilled as hereinbefore specified and thoroughly tamped: a. UIÙess otherwise directed by the Water Resources Engineer, all material from the bottom oftrench to within six (6) inches of the subgrade shall have an in-place density of95% of the maximum dry density as defined by a standard proctor curve for the material. 11-42 Sanitary Sewer Main Construction Division 11 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL b. All material within six (6) inches ofthe subgrade level shall have an in place density of 100% of the maximum dry density. c. On roadway shoulders, all material shall have an in place density of 95% of the maximum dry density. The Contractor shall remove and replace all inateria] failing to meet these requirements with suitable material. The extent of this removal shall be determined by the Water Reso urces Engineer. 3. Compaction Testing: Moisture content and density testing of backfill will be performed by a City ofMomoe appointed Soil Testing Consulting Firm. Tests will be performed within all street, highway and railway rights-of-way to insure that the specified compaction requirements are met. The Contractor will cooperate fully with the soils technicians in providing access to backfill at any requested depth for the purpose of performing moisture content/density testing. When requested, the Contractor shall excavate a backfilled ditch to any specified depth for a compaction test and shall insure that the ditch meets all OSHA safety standards before the technician enters to perform the test. A "standard proctor curve" which establishes the relationship between moisture content and dry density for soil will be determined by the method described in ASTM D-698 or by AASHTO Method T-99. Field density tests will be performed using either the sand cone method or a nuclear moisture/density gauge. Any backfill which does not meet the specified compaction will be re-tamped, or removed and replaced as approved by the Water Resources Engineer. ]1.03.11 MANHOLE CONSTRUCTION e e e All manholes outside street rights-of-way or landscaped areas shall be constructed to a height of two (2) feet above the adjacent ground unless otherwise indicated on the a Plans or by the Special Provisions. Manholes within street rights-of-way or ., landscaped areas shall have finished rim elevations flush with the pavement or 0.1 feet above final grade in right-of-ways outside of the pavement. After :final inspection is complete and all deficiencies have been corrected, the Contractor shall seal all manholes (rings to covers) with penetration type asphaltic cement No. AC-20 as manufactured by Exxon Oil Company or equal. 1. Precast Reinforced Concrete Structures: All precast manhole sections shall conform to the Material Specifications and Standard Details. Precast manholes shall be treated similar to reinforced concrete pipe for installation. That is, if ground water and/or soil conditions require stabilization 11-43 Sanitary Sewer Main Construction Division II e e . e e ·e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL for pipe installation comparable measures will be required for precast manhole installation. Under no circumstances will a precast base section be placed on unstable soil as solely determined by the Water Resources Engineer. Jointing of precast sections will be done in accordance with the manufactures' recommendation., with special attention called to the amount of force used. All backfill around structures shall be thorougWy tamped in layers as specified for placing backfill. Regardless ofthe type manhole construction used, the Contractor will do that which is necessary to stabilize the soil intended to support the structure. A stable condition shall only be so adjudged by the Construction Engineer or his authorized representative. Any cost incurred by the Contractor in stabilizing the area to support a manhole shall be considered incidental to the manhole construction. 2. Outside Drops: When design considerations dictate a large elevation change across a manhole, an outside drop shall be constructed in accordance with the City of Monroe Standard Detail 12.03.00 of these Specifications. When there is not sufficient elevation difference to pennit construction of an outside drop, the grade of the influent pipe shall be lowered such that the vertical separation of the influent and effluent pipes is 0.2 feet, as measured at the center of the manhole when the grades of both pipes are projected to that point. Outside drops shall not enter the cone section of precast manholes. 3. Inside Drops: When connecting a proposed sewer main to an existing manhole at an elevation significantly higher than the existing invert elevation, and where safety considerations or working space limitations preclude building an outside drop, the connection may be made with an inside drop constructed in confurmance with the Standard Details. Inside drops will be used only where shown on the plans or specifically approved by the Water Resources Engineer. They may not be used in lieu of outside drops shown on the plans. Inside drops shall not enter the manhole in the cone section. Inside drops are not allowed on four (4) feet diameter manholes. 4. Installation of Ring and Covers: The ring shall be installed on the manhole with a W' diameter kwik bolt stud anchor system. Hilti Brand or approved equal.. 8-inch tall or 4-inch tall trames may be used for manholes with bolt down ttames. These ttames shall have four (4) holes in the support flange to pennit installation on the cone with anchor bolts. Holes shall be equally spaced in the flange. The Contractor shall seal the :ftame to the manhole by installing a length of butyl rubber joint sealant to fonn a gasket between :ftame and manhole. The butyl rubber joint sealant shall have a one inch cross section, and shall make two full circles when placed on the cone section, and 11-44 Sanitary Sewer Main Construction Division II CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL shall be compressed by the frame with the anchor bolts. Butyl rubber joint sealant shall be "Rubber Seal" as manufactured by Ru Van, Inc., Kent Seal or approved equal. Cement mortar grouting of the frame shall be required. Brick may not be used on any manholes to adiust rim elevations. 8-inch tall frames are required for all manholes that are flush with pavement or finished grade unless otherwise approved. Concrete grade rings may be used to adjust the finished rim elevation of such manholes. This adjustment may not exceed 21-inches in height including the 8-inch ring. Anchor bolt system shall be extending through the cast iron ftame and the concrete grade rings and anchored into the cone section of the manhole. Butyl rubber joint sealant shall be used between each section of concrete grade ring installed. Refer to Standard Details 12.01.00 through 12.05.00. 5. Manhole Step Testing: The Contractor will furnish a hydraulic driven system consisting of cylinder, connecting hose and above ground pump with gauge to test manhole steps to exceed 1000 lbs of resistance of pullout. All field installed steps will be tested. In lieu of field testing steps installed at the plant, certified shop reports by the manufacturer showing that each step passed the required 1000 LB. pullout will be accepted. The certificates will be furnished to the Inspector prior to field installation. Unless the Contractor can furnish the manufacturer's certification on step tests, the Contractor will be required to test 10% ofthe plant-installed steps. An additional ,1 0% will be tested for each failure. 6. False Walls: False walls shall be constructed in manholes when specified on the Plans. Holes of the appropriate size shall be cored or blocked out in the manhole wall at the elevation and alignment shown on the Plans. A four-inch thick masonry wall shall be constructed in the opening. Inverts shall be constructed to match proposed pipe elevations and alignments and pennit installation of the future extension without demolition work other than removal ofthe false wall. 7. Steel Vent Pipes: Steel vent pipes will be installed in accordance with the Standard Detail 12.08.00 of these Specifications. Shop drawings of strap on vents, mounting straps, and anchor bolts will be subject to approval of the Water Resources Engineer. Material shall be as specified in the Materials Specification Section. 11-45 Sanitary Sewer Main Construction Division 11 . e e e e e e e e e CITY OF MONROE ST ANDARD SPECIFICATIONS AND DETAIL MANUAL 11.03.12 REMOV AL AND RESTORA nON OF PAVEMENT AND ROAD SURF ACES All removal and restoration of pavement and road surfaces will be in accordance wÜh the specifications approved by the City of Monroe Director of Engineering or the North Carolina Department of Transportation and Safety, Division of Highways, whichever applies. All restored bituminous and concrete pavements shall be placed to existing cross- section and ride quality. Restored pavement will in all instances be flush and level with existing pavement at the sawed edges, and at existing gutter lines where applicable UIÙess otherwise approved by the Water Resources Engineer. When pavement repairs do not meet the above criteria or are not performed in a workmanship manner as determined by the Water Resources Engineer with the City of Monroe, or North Carolina Department of Transportation, whichever applies, the contractor will remove and re-perform the restoration as specified. When cuts are to be made in street rights-of-way under maintenance by the City of Monroe, the Contractor shall contact the Superintendent of Streets or his designated representative before each separate pavement cut is made and secure a permit. Pavement will be replaced as follows. In all pavement cuts either the permanent pavement or a temporary pavement consisting of 1 "-11/2" of black asphaltic concrete (later to be replaced permanently) will be placed immediately upon completion of the subgrade UIÙess otherwise approved by the Water Resources Engineer. 1. Specifications for Cutting: Pavement: Unless otherwise approved or required, concrete pavement shall be removed to the nearest expansion or contraction joint. The Contractor will contact the Superintendent of Streets and/or D.O.T.'s District Engineer for a determination of the limits of concrete replacement and location of joints. Where sawed joints are allowed, the depth of the sawed cut shall be at least one ( 1 ) inch and shall extend at least 1/5 of the depth of the concrete. More depth may be required if necessary to prevent damage to surrounding pavement. Bituminous pavement shall be cut in a smooth and straight line. Sawing is required on asphaltic concrete. The width of pavement left between the edge ofthe ditch and the existing edge ofthe pavement or the fÌ'ont line of the gutter, shall be at least 2 feet. Residual strips of pavement less than 2 feet in width must be removed and replaced. Existing pavement shall be removed on each side of the trench for at least 12 inches beyond top of trench. The Contractor shall remove and replace pavement which, in the opinion of the Water Resources Engineer, has been cracked or displaced by the operation of the Contractor. 11-46 Sanitary Sewer Main Construction Division 11 CITY OF MONROE ST ANDARD SPECIFICATIONS AND DETAIL MANUAL 11.03.13 2. Specification For Restoring Concrete Pavement: The concrete used to restore pavement shall have a minimwn 28 day compressive strength of3600 PSI The concrete as placed shall conform to the shape, grade, and finish of the existing pavement and will be one (1) inch deeper than the original pavement including base, but in no instance less than six (6) inches. 3. Specification For Restoring Asphalt Pavement: All material above the sub- base level shall be hot-mix bituminous concrete conforming to North Carolina Department of Transportation standard specifications for roads and structures for both mix design and placement. The asphalt pavement as placed shall be one (1) inch deeper than the original pavement 'including base, but in no instance less than six (6) inches within City maintained roadways or eight (8) inches within state maintained roadways. The asphalt shall be placed in lifts not greater than 4 inches and shall be hot mix bituminous concrete binder Type H. The last two (2) inches in either instance shall be bituminous plant mix (1-2) suitable to the appropriate controlling agency. 1-2 asphalt pavement resurfacing will be placed with paving machines and/or rollers of a size and type currently approved by the North Carolina Department of Transportation for use on resurfacing contracts. If a bituminous surfacing overlays a concrete base, the Contractor, at the option of the Water Resources Engineer, shall replace the concrete to its original thickness, or to a level 2 inches below the finished surface. The Water Resources Engineer may direct the Contractor to omit all concrete and to replace the pavement with bituminous materials. Tack coats shall be employed with each lift. Tack coats shall be placed on both horizontal and vertical surfaces (pavement cuts or face of concrete gutters) . e . e Under normal conditions, asphalt binder will be placed in pavement cuts at the end of each work day. 1-2 shall be replaced weekly or within five days .- following completion of pipeline construction along a continuous section of ., pavement. During inclement weather, the Water Resources Engineer may pennit the use of temporary asphalt (cold mix) to seal the trench until permanent asphalt can be placed. CONCRETE CONSTRUCTION 1. Acceptance of Concrete: Concrete shall be accepted on the basis of its meeting the requirements listed under the Material Specifications and Detail Specifications Section of this contract. The Inspector will accept no ready mix concrete without the plant dispatch ticket. 11-47 Sarútary Sewer Main Construction Division 11 e e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL The Water Resources Engineer shall make or require any tests, as he deems necessary to insure that the concrete meets specifications. Such tests may be performed by an independent testing laboratory at the Contractor's expense. 2. Placement: Concrete will not be accepted if it cannot be placed within ninety (90) minutes of the dispatch time. Time requirements may fluctuate marginally due to temperature. Concrete shall be deposited in such a manner so as to prevent contamination by foreign material and segregation due to rehandling or flowing. Segregated concrete and/or concrete containing foreign material will not be accepted. Depositing will not be permitted when temperature has not exceeded 350 and rising by 10:00 A.M. Depositing shall cease when the descending air temperature in the shade falls below 400 F. It shall not resume until the ascending air temperature rises to 350 F. All concrete shall be kept from freezing by the Contractor. Frozen concrete shall be replaced at the Contractor's expense. Free fall shall not exceed 3 feet in any case. 3. Forms: Forms may be made of wood, plywood, metal, or any other material approved by the Water Resources Engineer. Forms shall be mortar tight, of material strong enough to resist noticeable deflection or bulging between supports, and the interior dimensions of the forms shall be such that the finished concrete shall be of the form and dimensions shown on the Plans. The design of the forms shall take into account the effect of vibration of concrete as it is placed and also the rate of speed at which the forms will be filled. Forms shall be coated with a lubricant as approved by the Water Resources Engineer. Mechanical vibrators, of an approved type, and continuous spading and/or rodding of concrete shall be used to produce proper contact of concrete with forms and reinforcing steel in piers and with forms and pipe in monolithic inverts insuring a compact, dense and impervious artificial stone ofunUorm texture. 4. Curing: All concrete will be cured for a seven (7) day period after placement according to the following procedure. a. Forms will normally be left in place for the entire seven (7) day period. Exposed surfaces not covered by forms will be kept moist continuously for the entire seven day period or will be cured through use of an approved curing compound which will be applied after all surface water has disappeared. b. At the discretion of the Water Resources Engineer, fonns may be removed after the initial set and before the end of the seven day period. In such cases, the areas previously covered by forms shall be cured as described above. 11-48 Sanitary Sewer Main Construction Division 11 CITY OF MONROE ST ANDARD SPECIFICATIONS AND DETAIL MANUAL c. The Water Resources Engineer may permit backfill of certain structures (e.g. concrete piers) before the end of the curing period. In such cases, the forms shall be stripped and the surfaces that remain exposed after backfill shall be cured as described in (a) above. Curing compound shall not be required for backfilled surfaces except where specified by the plans or Special Provisions. 5. Finishing: The structure shall have a uniform and textured surface. All fonn marks exposed to view shall be rubbed off with a stone. 6. Testing: The following tests will be performed by an independent testing :firm technicians to ensure the concrete quality: a. Compressive strength in accordance with ASTM C-31 and ASTM C- 39. Test cylinders which are fonned in the field will be left in the field until compression testing (7 day, 14 day, 28 day) is completed thereby more closely approximately the curing conditions of the field placed concrete. b. Slump Test in accordance with ASTM C-143. c. Air Content Test in accordance with either ASTM C-173 or ASTM C- 231. 11.03.14 DRY BORE WITH STEEL ENCASEMENT 1. Bore Pits (or Tunnel Pits): Bore or tunnel pits shall be safed-up, shored, well marked, lighted, and not left unattended except as approved by the controlling agency. Requirements for stabilization and dewatering of bore pits shall be as hereinbefore specified. The angle of repose method (sloping pit walls) for creating a safe working area shall not be used. 2. Installation: Smooth wall or spiral weld steel pipe may be jacked through dry bores slightly larger than the pipe, bored progressively ahead of the leading edge of the advancing pipe as spoil is mucked by the auger back through the pipe. As the dry boring operation progresses, each new section of encasement pipe shall be butt-welded to the section previously jacked into place. Continuous checks shall be made as to the elevation, grade and alignment of each successive section of encasement as well as the tracks (rails) upon which the boring rig travels. Ifvoids are encountered or occur outside the encasement pipe, grout holes shall be installed in the top section of the encasement pipe at ten (10) foot 11-49 Sanitary Sewer Main Construction Division 11 e . e e e e . e e e CITY OF MONROE ST ANDARD SPECIFICATIONS AND DETAIL MANUAL centers and the voids filled with 1:3 Portland Cement grout at sufficient pressure to prevent settlement in the roadway/railway. Boring operations shall be continuous to their completion, and unnecessary or prolonged stoppages shall not be allowed. In the event an obstruction is encountered during the boring and jacking operations, the auger is to be withdrawn and the excess pipe is to be cut off, capped, and filled with 1:3 Portland Cement Grout at sufficient pressure to fill all voids before reapplying to the Controlling Agency for permission to open cut, bore at an alternate location, or install a tUIU1el. Installation shall be to the limits specified by the Controlling Agency and/or as delineated in their encroachment issued to the City of Monroe. (Copy of the encroachment agreement must be kept at the site throughout boring operations). The completed casing installation shall be such as to prevent the formation of a waterway under the road or railbed. The Controlling Agency shall have full authority to require remedial measures and/or to stop all work if, in its opinion, said work will cause any damage to the roadway/railway section or endanger traffic. In all instances the Controlling Agencies reserve the right to sample, test, and approve all materials and methods used. The Contractor shall notify the Controlling Agency through the Construction Water Resources Engineer and acknowledgment shall be received a minimum of five (5) working days prior to beginning any work within roadway or railway rights-of-way. Ifrequired, 24-hours notice will be given prior to completion. 11.03.15 GUARANTEED CASING INSTALLATION The Casing shall be installed by jacking, with simultaneous removal of spoil. The spoil removal shall not proceed more than 1 8-inches ahead of the casing. The diameter of the excavated hole shall be no larger then necessary to keep the casing moving :freely and lubricant may be used to reduce the jacking forces. Casing sections shall be joined by butt weld. After the casing is jacked in place, 2-inch grout holes shall be used to pump a 1:3 Portland cement grout to fill the void outside the casing. Sufficient pressure should be applied to force grout out of the adjacent grout hole. Grout holes shall be a maximwn often feet apart at the top of the casing. The casing size and thickness shall be as shown on the Plans or Special Provisions. 11-50 Sanitary Sewer Main Construction Division 11 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 11.03.16 TUNNELING OPERATIONS USING STRUCTURAL STEEL LINER PLATES All plates shall be fonned to provide circum:fTential flanged joints. Longitudinal joints may be flanged or offset lap seam type. All plates shall be punched for bolting on both longitudinal and circum:tTential seam or joints. Bolt spacing in circum:tTential flanges shall be in accordance with the manufacturer's standard spacing and shall be multiples of the plate length so that plates having the same curvature shall be interchangeable to permit staggering of the longitudinal seam. Bolt spacing at flanged longitudinal seams shall be in accordance with the manufacturer's standard spacing. For lapped longitudinal seams, bolt size and spacing shall be in accordance with the manufacturer's standard but not less than that required to meet the longitudinal seam strength requirements of the design specifications. All liner plates for the full length of a specified tunnel shall be either the flanged or the lapped seam type. The two types shall not be mixed in the same tunnel. Liner plates shall be assembled in accordance with the manufacturer's instructions. Galvanized and coated plates shall be handled in such a manner as to prevent bruising, scaling, or breaking of the coating. Any plates that are damaged during handling or placing shall be replaced, except that small areas with minor damage maybe repaired to the satisfaction of the Construction Engineer or his representative. Galvanized surfaces shall be repaired by thoroughly wire brushing the damaged areas and removing all loose cracked coating, after which the cleaned areas shall be painted with two (2) coats of zinc rich paint as approved, and an acceptable bituminous coating restored. When tunneling has proceeded a distance sufficient for placing one section of the twmelliner, that section of liner will be placed before excavating further. Excavation shall be controlled so that the space outside the liner plate shall be held to a minimum. All voids between the liner plate and the tunnel wall shall be filled with 1:3 Portland cement grout, containing no more water than necessary, placed under sufficient pressure to fill all voids. Grout shall be placed through the grout holes provided in the top of the tunnel liner plates. Grout holes 2" in diameter shall be provided at not more than 4.5 foot centers or every third ring of plates to permit grouting as the erection of the tunnel liner progresses. At no time will the grouting operations be further than 10' from the front end or head of the tunnel construction. At the end of each day's operations, the voids outside installed liner plates shall be grouted whether 10' or less. Grout will be forced into each grout hole. If the grout from one hole should flow along the liner plates so as to plug the next hole, the plug shall be opened by punching through the grout so that each hole may be used for grouting. The grouting operation will be continued at each hole until all spaces outside the liner plates are filled and nogrout will flow. The tunnel shall be constructed to the limits, grade and alignment shown on the Construction Plans. Excavation, without the use of jetting, shall be done in such a 11-51 Sanitary Sewer Main Construction Division 11 e e e e e e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL manner as to protect public and/or private property from damage. Prior to beginning any construction, the Contractor shall submit pit shoring and tunnel liner details for approval, and no tunneling may begin prior to approval of these details by the appropriate Controlling Agency. After approval oftunnelliner and pit shoring details, a five (5) day notice to the Controlling Agency, through the Construction Engineer, shall be provided as previously specified. No blasting will be done without prior written approval of the controlling agency and then only in strict accordance with all Federal, State, and Local laws, ordinances, rules, or regulations governing the storage and use of explosives. Where blasting is required, only small controlled charges of 40% dynamite or plastic explosives shall be used. The depths ofthe holes for these charges shall not exceed the depth necessary to clear an area sufficient to place one section oftunnelliner. The charges for the initial series ofbIasts should be placed in the triangle method. The second series should be placed in the radial method a minimum distance fi-om the desired diameter of the tunnel. The triangular charges shall be set to go off first, with the radial charges to go off following a short interval or using the time-lag method. Where rock is encountered before approaching the shoulder or pavement, the first four series of charges will be used in detennining the amount of controlled blasting to be used before beginning any blasting beneath the railway or shoulders or pavement of the highway as applicable. If rock is encountered after tunneling progresses beneath the pavement or railway, the charges will initially be set at very low levels and increased in small increments until the proper amount of charge is determined. In no case will an overshoot be permitted. If a boulder is encountered and removed by blasting or by other methods, a bulkhead will be formed immediately after removal of the boulder and the area filled with grout before proceeding with the tunneling operations. If there is any indication ofa vertical split in the rock formation or any indication of settlement of the roadway or railway fill, all operations shall be stopped and the Controlling Agency notified immediately. If the vertical split is not determined to be of too great a magnitude or too close to the rails/pavement, the split shall be filled with grout at a pressure specified by the Controlling Agency, allowed to set and tunneling operations may be continued. If it is determined that the vertical split is too great of a magnitude or too close to the pavement or railway, the Controlling Agency shall determine the method to be used to correct the split. If settlement of the roadway or railway occurs, the Controlling Agency will advise the Owner and his Contractor ofthe proper steps to be taken to correct the settlement. If deemed necessary by the Controlling Agency, adequate warning devices (signs, flashers, etc.) accompanied by responsible flagmen shall be placed at a distance allowing any and all traffic time to stop safely before reaching the questionable area. At the option of the Controlling Agency, it may provide the 11-52 Sanitary Sewer Main Construction Division 11 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL necessary flagmen, warning devices, etc., at the Contractor's expense. Traffic shall be allowed over the questionable area only as directed by the Controlling Agency.e The Controlling Agency shall have full authority to inspect entire tunnel operation, require disposition of remedial measures, and to stop all work if, in its opinion, the work will cause any damage to the roadway/railway section or endanger traffic. In all instances the Controlling Agencies reserve the right to sample, test, and approve all materials used. The completed liner shall consist of a series of structural steel liner plates assembled with staggered longitudinal joints. Liner plates shall have been fabricated to fit the cross section ofthe tunnel. All plates shall be connected by bolts on both longitudinal and circumfi-ential seams or joints. e After tunneling operations have been completed the Contractor will install the carrier pipe in a manner approved by the Water Resources Engineer. Concrete fill (1:3 Portland cement grout) will then be placed after completing installation of the sewer pipe within the tunnel liner as directed by the Water Resources Engineer and end enclosure walls installed as shown on the Construction Plans or Standard Details. Ends of the tunnel liner will be sealed with an eight-inch (8") masonry wall on the lower end and a twelve-inch (12") masonry wall on the higher end. Weep holes will be provided on the downstream end for drainage. The Contractor shall then remove the vertical shoring for pits (if ground conditions allow), surplus spoils, and material from the site. The site shall then be returned to its original condition, seeded, mulched, or restored as specified and left in a neat and satisfactory condition. Shoring material shall be removed in such a manner so as to avoid collapse and to allow proper backfill. The backfill shall be placed in accordance with these Specifications or the requirements of the Controlling Agency. e The Contractor will notify the Water Resources Department, in writing, upon completion of the tunnel liner installation. Notification 'of completion of the tunnel operation will then be forwarded to the Water Resources Engineer, in writing, by letter with a copy to the attention ofthe State Design Services Engineer, North Carolina Department of Transportation, Division of Highways, Raleigh, North Carolina 27611 by the Utility Department. e The Contractor shall reimburse the City of Monroe (Owner) and the City of Monroe (Owner) shall reimburse the Division of Highways should any settlement or damage result to the roadway within a period of one (1) year after completion of the tunneling operations. The Contractor and any ofhis subcontractors performing work on the State's (N.C. e DOT) right-of-way in connection with tunneling operations shall furnish for approval, through the Construction Engineer, to the Department of Transportation, attention 11-53 Sanitary Sewer Main Construction Division 11 . e e . e CITY OF MONROE ST ANDARD SPECIFIC A nONS AND DETAIL MANUAL State Design Services Engineer, North Carolina Department of Transportation, Division of Highways, Raleigh, North Carolina, 27611, a certificate of insurance. Insurance requirements for work performed on Railroad (CSX, Norfolk-Southern, etc.) property will be as outlined in the Special Provision Section of the project. The Contractor shall furnish for approval a certificate ofInsurance to this office. All required submittals will be sent to the Utility Department for review and this office will then forward the documentation on to the railroad. Insurance will remain in full force and effect for one (1) year after acceptance by the owner and the Controlling Agency. The Certificate is to be countersigned by an authorized North Carolina Resident Agent with the name and address of the agent denoted thereon. 11.03.17 BLASTING Prior to commencing any blasting operations the Contractor shall notify the City of Monroe Public Safety Department at 282-4700 and obtain blasting permits as required. The Contractor must furnish certification ofInsurance specifically covering any and all obligations assumed pursuant to the use of explosives. All blasting operations shall be conducted in strict accordance with any and all decrees, rules, regulations, ordinances, and laws as may be imposed by any regulatory body and/or agency having jurisdiction over the work relative to handling, transporting, use and storage of explosives. Blasting shall be done only by competent and experienced personnel whose activities shall be conducted in a workmanlike manner. Satisfactory information must be provided to the Engineer that the blaster meets or exceeds the qualifications enumerated in OSHA Regulations Part 1926, Subpart U, Section 1926.901 - Blaster Qualifications All rock dirt and debris fÌ'om blasting shall be contained within the excavation by use of weighted mats or undisturbed overburden. The Contractor's blaster shall be fully responsible for determining the method of containment and the weight, size and placement of material required to contain the charge he is using. Charges shall be sized such that no damage to houses, structures, utilities, roadways etc. outside the lirrúts of excavation will occur. Where there is a possibility of such damage, the charge will initially be set at very low level and increased in small increments until the proper charge is determined. The Contractor shall be held responsible for any and all injury to persons or damage to public or private property. 1. Permission To Blast: The Contractor shall not be allowed to blast within any rights-of-way maintained by any agency (NCDOT, R.R. Gas etc.) other than 11-54 Sanitary Sewer Main Construction Division 11 CITY OF MONROE 8T ANDARD SPECIFICATIONS AND DETAIL MANUAL the City without specific approval of the controlling agency and only in accordance with their respective requirements. 2. Pre-Blast Survey: The Contractor shall be responsible for conducting a pre-blast survey before any detonation of dynamite for the purposes of sewer main construction. The City of Monroe shall be held harmless for any damage to structures or foundations caused by bla&'1ing. Ifblasting is conducted within 300 feet of any structure, the contractor shall be required to obtain a detailed pre-bast survey conducted by a 3rd party firm actively engaged in such work. Pre-blast survey shall include the following a. Survey shall include video of structures exterior walls and foundation. b. Calibration of the seismograph units used on every blast by a 3rd party to insure accuracy of the recording. c. Water samples of any wells within 300 feet ofthe blast location. 11.03.18 PHYSICAL INSPECTION AND TESTING The Contractor shall provide proper ventilation of sewer lines and manholes during any test or inspection procedure. The Contractor shall be responsible for providing all equipment and personnel necessary to comply with OSHA confined spaces regulations. 1. Physical Inspection: All work shall be physically inspected by the Engineer to confirm that all sewer lines have been constructed between manholes without defects in condition, grade, or alignment. Physical inspection may be by lamping at manholes, by video camera designed for use in sewer pipe, or both, at the discretion of the Engineer. All observed defects shall be corrected by the Contractor at-no additional expense to Owner. 2. Deflection Testing ofPVC Pipe: Not less than 30 days following completion of backfill, the pipe shall be tested for deflection with a 5 degree mandrel sized as defined in ASTM D- 3034. Mandrels shall be furnished by the Contractor. The mandrel shall be pulled through each section of pipe from manhole to manhole. The mandrel must slide freely through the pipe with only a nominal hand force applied. No mechanical device shall be used in pulling the mandrel. Any pipe which refuses the mandrel shall be removed and replaced or re-rounded and the bedding shall be properly constructed as specified to prevent excessive deflection. Such sections shall be re- tested for deflection after completion of backfill. 11-55 Sanitary Sewer Main Construction Division 11 e e e e e e . e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 3. Pipe Leakage Test: All completed sewer mains shall be tested between manholes for compliance with an infiltration and exfiltration standard of less than or equal to 100 gallons/mile/inch dia./day. In conditions where air testing is not practical or safe, as determined by the Engineer, an Exfiltration Water Test may be permitted. a. For Low-Pressure Air Testing, the test pressure shall be a minimum of 3.5 psi. Testing time in minutes shall be according to the schedule shown in Table SP-l. TABLE SP-I SANITARY SEWER MAIN AIR TEST FOREXFILTRATION MINIMUM TIME REQUIRED FOR A 0.5 PSIG AIR PRESSURE DROP FOR SIZE AND LENGTH OF PIPE INDICATED Specification Time in min:sec Length of Pipe Section PIPE 100 FT. 150 FT. 200 FT. 250 FT. 300 FT. 350 FT. 400 FT. 450 FT. DIA. (IN) 4 1:53 1:53 1:53 1:53 1:53 1:53 1:53 1:53 6 2:50 2:50 2:50 2:50 2:50 2:50 2:51 3:12 8 3:47 3:47 3:47 3:47 3:48 4:26 5:04 5:42 10 4:43 4:43 4:43 4:57 5:56 6:55 7:54 8:54 12 5:40 5:40 5:42 7:05 8:33 9:58 11:24 12:50 15 7:05 7:05 8:54 11:08 13:21 15:35 17:48 20:02 18 8:30 9:37 12:49 16:01 19:14 22:26 25:38 28:51 21 9:55 13:05 17:27 21 :49 26:11 30:32 34:54 39:16 24 11:24 17:57 22:48 28:30 34:11 39:53 45:35 51:17 27 14:25 21:38 28:51 36:04 43:16 50:30 57:42 64:54 30 17:46 26:43 35:37 44:31 53:25 62:19 71:13 80:07 A segment of pipe 450 feet or less in length will be considered to pass if the air pressure drop does not exceed 0.5 psi at the end of the testing time. For lengths of pipe greater than 450 feet, the following fonnula shall be used for determining testing time: T = 0.000198 D2L Where: T = Minimum testing time, minutes D = Nominal inside pipe diameter, inches L = Length of pipe tested, feet 1 I -56 Sanitary Sewer Main Construction Division 11 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 3. Manhole Leakage Test: Each manhole shall be vacuum tested after completing pipe connections and sealing but before completing backfill around manhole and after _ placement ofring and cover. It shall be required that 10% of all manholes shall be ., vacuum tested at the factory prior to shipping to the site. The Contractor shall submit to the Owner written certification from the manufacturer that 10% of the manholes have passed a factory vacuum test. Field vacuum testing shall be performed as follows: a. Plug all pipe entrances with suitably sized and rated pneumatic or mechanical plug inserted 6" into the pipe and properly braced to achieve seal without leakage. b. Position vacuum tester head assembly to seal against the interior surface of the top of the manhole ring and inflate per manufacturer instructions. e c. Draw a vacuum of 10" of mercury, close the valve on the vacuum line, and shut off vacuum pump. d. Measure the time for the vacuum to drop to 9" of mercury. The manhole has passed a leakage test if the tinle exceeds the following: Manhole Internal Diameter (ft) Time (see) 4 60 5 75 6 90 7 105 e If the Engineer penmts the manhole to be tested by hydrostatic testing in lieu of vacuum testing, the pipe entrances shall be plugged similar to the vacuum test and the manhole filled with water to within 3" of the top ofthe cone. Following maximum absorption of water by the concrete and piping (and water is added to restore the level within 3" oftop of cone), a test for four hours should show no measureable change in water level. 11.03.19 REPAIRS AND MODIFICATIONS e All leaks shall be repaired by identifYing and exposing the defective section of pipe and completing repairs as follows: 1. Existinu: Utilities: The developer or contractor shall be responsible for all costs necessary for the replacement, addition, or modification of existing water and sewer utilities that are a result of proposed construction. Costs shall be consider incidental to the work performed and be included in the unit pnces. 2. PVC. Ductile Iron Pipe: Defective or damaged pipe including leaking joints shall be removed and replaced with sound new pipe. The pipe shall be re- - 11-57 Sanitary Sewer Main Construction Division 11 e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL connected with approved couplings as specified in the Materials Section of these specification. 3. Manholes: Any damage to the interior wall ofthe manhole resulting ITom penetration ofthe lift holes shall be repaired with non-shrink cement grout. Leaks through manhole joints or walls or around pipe collars may be repaired from inside the manhole with non-shrink cement grout. If the size of the leak, or the external water pressure, prevents such repairs, the manhole shall be excavated and repaired from outside. Leaks around boots or gaskets used to join pipe to manholes shall be repaired by external concrete collars or as approved by the Water Resources Engineer. 11.03.20 ABANDONMENT The following requirements shall apply for proposed abandonment of existing facilities unless otherwise shown on the plans or approved by the Water Resources Engineer. All areas disturbed by abandonment will be restored. 1. Abandonment of Existing Manholes: Manholes which are to be abandoned will fIrst have both influent and eft1uent lines plugged inside the manhole with watertight non shrink grout. The manhole will then be filled with non- compressible material (#67 stone or as approved), to a point three feet (3'-0") below the finish grade. The remainder ofthe manhole shall be broken down and removed. Then the excavation shall be filled to finish grade with suitable soil compacted in place. 2. Abandonment of Mains At Manholes Which Remain in Service: Abandoned mains at active manholes shall be completely disconnected 1Ìom the manhole by cutting the pipe outside the manhole and then plugging the abandoned main and the manhole wall with watertight non-shrink grout. The invert shall then be rebuilt to conform with the standard details. 3. Abandonment of exposed pipe: Exposed sections of abandoned mains shall be removed to a point not less than 5 feet into the adjacent banks. The remaining ends of the pipe shall be plugged with watertight masonry. Concrete piers or collars in the creek channel shall be removed completely. Concrete piers or collars not located in the creek channel shall be removed to a point three feet (3'-0") below the finish grade. Steel piers shall be cut off three feet (3'-0") below finish grade. 4. Abandonment of Existing Pump Stations: Pumps, motors, controls, etc., shall be salvaged and transported by the Contractor to the sewer maintenance yard 1 I-58 Sanitary Sewer Main Construction Division 11 CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL at 3001 Wilmont Road. All influent and effluent pipes shall be plugged with watertight masonry. The pump chamber and wetwell (if abandoned) will be filled with non-compressible material (#67 stone or as approved), to a point three feet (3'-0") below the finish grade. The remainder of the structure shall be broken down and removed. Then the excavation shall be filled to finish grade with suitable soil compacted in place. All above ground structures associated with the pump station, including fencing and the access road shall be removed and the area restored. e 11.03.21 RESTORATION All surfaces and structures (both public and private) within and adjacent to the construction operations shall be restored to a condition equal or better to that existing prior to construction or as specified in the special provisions. e All surplus materials shall be disposed ofin a manner acceptable to the Water Resources Engineer, and the construction area shall be left in a neat condition, with special attention called to proper drainage, 'smoothness of surface, and general clean up. No machinery or equipment shall be left or stored on the job site after the project is completed. Unless otherwise specified, complete restoration to include fertilizing, seeding, and - mulching of any and all areas disturbed during construction shall be completed within WI' thirty (30) working days following the initial ground disturbing activity. 1. Water meters, valve boxes, drain pipes, and other structures encountered shall be reset or relaid to match or clear surface grade and/or water main pipe grade as applicable., 2. All shoulder areas shall be restored, stabilized, and maintained to their original condition. Concrete, asphalt, gravel, and dirt walks, drives and roadways are .. to be replaced to their original shape and serviceability. Unless otherwise _ approved by the Water Resources Engineer all areas (shoulders, side streets, drive, parking areas, etc.) which exhibit a gravel surface at the time of construction will be re-graveled with a minimum depth of six (6) inches of C.A.B.C stone compacted-in-place for the width and length of the disturbed area and then feathered gradually into the existing cross section. When a driveway is finished with other than C.A.B.C stone, a one inch finish coating to match existing gravel gradation and appearance shall be placed. The Contractor should note that all existing side streets and drives which are either stone or gravel will be restored as specified for graveled areas. e 11-59 Sanitary Sewer Main Construction Division 11 e e e e e CITY OF MONROE STANDARD SPECIFICATIONS AND DETAIL MANUAL 3. Refuse Burial: Timber, rock and other refuse may not be buried within the pennanent sewer rights-of-way with the exception of rock smaller than 3/4 cubic foot which is allowed as previously specified. 4. Rip-Rap: The Contractor shall place stone rip-rap as specified in those areas subject to severe water action where directed by the Water Resources Engineer. Placement of rip-rap as shown on the Construction Plans shall be considered a guide only, with final determination made at the time of construction by the Water Resources Engineer. Either the addition or deletion of quantities may be required. Stone rip-rap will be placed as indicated on the Standard Details immediately following pipe installation and will be installed no steeper than a 2: 1 slope except when specifically approved by the Water Resources Engineer. Grading will be required as necessary to insure continuous even flow. In locations where a creek bank is eroded near the sewer line the Contractor will be required to place compacted fill material along the creek bank in order to maintain 3' of cover over the sewer line in all directions. This is to be done before the rip-rap is placed. The rip-rap installation shall include all earthwork necessary to stabilize the creek bank and to provide cover for the sewer line. 5. Jute NettinlZlErosionBlanket: The contractor shall install jute netting or Erosion Control Blanket in areas subject to high runoff velocities, areas subject to concentrated runoff and on steep slopes as shown on the plans and/or as directed by the Water Resources Engineer. 6. Fertilizing: Seeding and Mulching: Established lawns and landscaped areas damaged by construction shall be restored to their former condition by seeding, unless the type and condition ofthe existing sod warrants it being cut removed, preserved and replaced. All areas, regardless of previous condition, damaged by construction shall be fertilized, seeded, and mulched as outlined below: a. Seed Bed Preparation: The seed bed shall be prepared by pulverizing the soil in an approved manner to a depth of three (3) inches for field conditions or slopes that are 3: 1 or flatter and to a depth of one (1) to three (3) inches, as determined on site for slopes steeper than 3:1. The soil shall be tilled lUltil a well pulverized, finn, reasonably unifonn seed bed is prepared conforming substantially to ground elevations as shown on the plans and/or as existing prior to construction. The 11-60 Sanitary Sewer Main Construction Division I 1 .. CITY OF MONROE ST ANDARD SPECIFICATIONS AND DETAIL MANUAL disturbed area shall blend unifonnly into adjacent topography. Good surface drainage must be provided, allowances for settlement made and ground elevation adjusted accordingly. Visible ponding will not be allowed. All stones, roots, sticks, rubbish and other objectionable materials shall be removed. e b. Soil Imorovements: Soil additives shall be incorporated in an approved manner into the top soil at the following rates: Fertilizer - 20 pounds per 1000 square feet of 5-10-10 fertilizer and 30 pounds per 1000 square feet of 10-10-10 fertilizer for established lawns. e Lime - 100 pounds per 100 square feet. Superphosphate (0-20-0) - 12 pounds per 100 square feet c. Seeding: Seeding must be done within thirty (30) calendar days after the initial ground disturbing activity. General seeding mixture shall be as specified in the Project Plans and Special Provisions. If established lawns are present, Contractor shall contact the owner and attempt to match variety that is in place. e Seed bed must be in good, friable condition and not muddy or hard at the time seeding is performed. Seed shall be applied at the rate specified and raked or tilled into the topsoil with the resulting furroughs running across the natural slope of the ground. Under no circumstances will any tilling activity be allowed parallel with said slope. Slopes steeper than 3:1 shall require use of hydraulic seeding unless otherwise specifically approved by the Water Resources Engineer. e d. Mulching: After fertilizing, seeding and raking, dried straw shall be spread unifonnly over the area at a rate of90 pounds per 1000 square feet. Approximately 1/4 ofthe ground should remain exposed to avoid smothering seedlings. In areas where possible erosion is evident the Contractor may employ either Hydro-seeding or jute netting or a combination of for more immediate soil stabilization. The Water Resources Engineer shall have the authority to insist that any and all appropriate erosion control and soil stabilization measures be employed by Contractor if it is e evident a problem exists. 11-61 Samtary Sewer Main Construction Division 11 e e e e e CITY OF MONROE ST ANDARD SPECIFICATIONS AND DEI AIL MANUAL e. Maintenance: The Contractor shall maintain the seeded areas until there is a uniform growth three (3) inches high. Maintenance shall consist of watering, weed and pest control within established lawns, fertilization, erosion repair, reseeding and all else necessary to establish a vigorous healthy and uniform strand of grass. All areas and spots, which do not show a uniform strand of grass, for any reason, shall be treated repeatedly until a uniform strand is attained. The Water Resources Engineer will be consulted prior to seeding for a determination of appropriate seed mixture. Unless otherwise required by the North Carolina Department of Transportation or the Water Resources Engineer, seeding within road rights- of-way will be as specified for established lawns. 11.03.22 WORK WITHIN NCDOT RIGHTS-OF-WAY Construction is pennitted within rights-of-way of the North Carolina Department of Transportation Division of highways in accordance with their Policies and Procedures for Accornrnodating Utilities on Highway Rights-Of-Way as amended. The City of Momoe will enforce this entire docwnent as it relates to this work. All Contractors are required to become familiar with this docwnent and any amendments, which are available nom the Manager of Right-Of- Way, North Carolina Department of Transportation, Division of Highways, Raleigh, North Carolina. The following is language nom NCDOT Policies and Procedures that are applicable: 1. The City of Monroe has entered into an encroachment agreement with North Carolina Department of Transportation, which grants the right for any work within the Department of Transportation's right-of-way. The encroachment agreement for any work is within NCDOT rights-of-way under this project is included in the Special Provisions of the contract. The Contractor shall have a copy of the approved encroachment at the construction site at all times. 2. Certain notices are required in writing before any work can proceed within the Department of Transportation's rights-of-way. Upon ample notice by the Contractor, the Engineer can make this notification. 3. Proper signing before, during, and after construction is confonnance with the manual on Uniform Traffic Control Devices for Streets and Highways will be required. In addition, warning signs as reiated to soft and/or low shoulders and broken pavement, may be required by the Engineer I I -62 Sanitary Sewer Main Construction Division 11 CITY OF MONROE ST ANDARD SPECIFIC A nONS AND DETAIL MANUAL 11.03.23 4. Piling and/or storage of excavated material upon pavement and on some types of shoulders is prohibited unless special permission is granted by the Department of Transportation's Division Engineer. Any material spilled, tracked or placed on the pavement is to be cleaned and damaged pavement repaired subject to stoppage ofall work by the City of Monroe. Drainage ditches are to be protected fÌom siltation as specified on the plans and must be . opened at the end of each work day or as weather conditions require. e e e The Contractor upon conducting a final inspection of a sewer main installed within NCDOT right-of-way limits shall contact NCDOT and have them present at the Final Inspection with the Water Resources Engineer. Any comments made by the NCDOT Permits Engineer, shall be added to the punch list and addressed by the Contractor in a timely manner. The Contractor will be responsible for providing a letter from NCDOT signifying ... their acceptance of the work done within NCDOT tight-of-way before ., acceptance and ownership of the sewer main is given by the Water Resources Department. 11-63 Sanitary Sewer Main Construction Division 11 1. Final Inspection: Upon substantial completion of a sewer main extension e project. The Contractor shall contact the Water Resources Department Inspector or Representative to conduct an on-site final inspection of the install 5. Open trenches are prohibited between dusk and dawn and at designated peak traffic hours unless special perIlÚssion is received from the NCDOT Division Engineer. 6. When cutting of pavement is permitted, only one half of the road width shall be opened at any time. Full traffic flow is to be maintained between dusk and dawn and at other peak hours oftraffic as required by the encroachment agreement or other Special Provision. 7. The Contractor and his suppliers are directed to contact N CDOT to verifY axle load limits on State maintained roads and bridges, which will be used for hauling equipment or materials to the project site. The Contractor and his suppliers shall do all that is necessary to satisfy N CDOT' s requirements and will be responsible for any damage to roads and bridges resulting from project construction. 8. Job Closeout Clause CITY OF MONROE JOB CLOSE-OUT The City of Monroe Water Resources Department requires the following procedures be completed before the activation of sanitary sewer main extension. . e e e . CITY OF MONROE ST ANDARD SPECIFICATIONS AND DET AlL MANUAL in.fÌ'astructure. All uncompleted work, defective materials and site restoration matters shall be listed on a punch list for the Contractor to complete before final acceptance. Upon completion ofthe punch list items, a follow up inspection will be completed by the Water Resources Inspector. 2. As-Builts and En@:ineering Certification: The activation of the sewer main shall not take place until the Project Engineer has furnished the Water Resources Department with an Engineering Certification of the Project and the As-Built drawing have been submitted, reviewed and approved by the Water Resources Department. 11-64 Sanitary Sewer Main Construction Division 11 e e THIS PAGE IS INTENTIONALLY e LEFT BLANK e e e . 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"'ï!!z S"o !2 s z '" e e APPENDIX A e RATIONAL METHOD e e e e THISP AGE IS INTENTIONALLY LEFT BLANK e e e A1 TIME OF CONCENTRATION 100 -- Q) L (ft) +=õ ::J .J..OO 10000 0 - -- - 50 e Q) -- -- > - -- 0 50 - -- .D -- 5000 -- ro - - -- -- -- - e -- -- 0 Q) - - 0... > -- - ro - Q) '- -- -- 0 "l- e 10 E 0 10 1000 0 Q) ..c:: -- I..- -- ro 0} '- -- e -- CJ) e 0 5 Q) 500 Q) 5 E ü "l- E e 0 ::J 0 -- E U ..c:: x "I- 0} ro 0 Q) ~ Q) I E 100 ~ e H (ft) 500 e Note: Use nomograph Tc for natural basins with well-defined channels, for overland flow on bare earth, and for mowed-grass roadside channels. For overland flow, grassed surfaces, multiply Tc by 2. For overland flow, concrete or asphalt surfaces, multiply Tc by 0.4. For concrete channels, multiply Tc by 0.2. e Adapted from NCDENR Erosion and Sedimentation Planning and Design Manual Tc (min.) 200 A2 DETERMINATION OF "C" VALUE Land Use C Land Use C e Business Lawns Downtown Areas 0.70-0.95 Sandy soil, flat, 2% 0.05-0.10 Neighborhood areas 0.50-.070 Sandy soil, ave., 2-7% 0.10-.015 Sandy soil, steep, 7% 0.15-0.20 Residential Heavy soil, flat, 2% O. 1 3-0. 17 Single-family areas 0.30-0.50 Heavy soil, ave., 2-7% 0.18-0.22 Multi units, detached 0.40-0.60 Heavy soil, steep, 7% 0.25-0.35 Multi units, attach 0.60-0.75 e Suburban 0.25-0.40 Agricultural Land Bare packed soil Industrial Smooth 0.30-0.60 Light areas 0.50-0.80 Rough 0.20-0.50 Heavy Areas 0.60-0.90 Cultivated rows Heavy soil no crop 0.30-0.60 Parks, Cemeteries 0.10-0.25 Heavy soil with crop 0.20-0~50 Sandy soil no crop 0.20-0.50 Playgrounds 0.20-0.35 Sandy soil with crop 0.10-0.25 Pasture e Railroad Yard Areas 0.20-0.40 Heavy soil 0.15-0.45 Sandy soil 0.05-0.25 Unimproved Areas 0.10-0.30 Woodlands 0.05-0.25 Streets Asphalt 0.70-0.95 Concrete 0.80-0.95 Brick 0.70-0.85 Drives and Walks 0.75-0.85 Roofs 0.75-0.85 e NOTE: The designer must use judgment to select the appropriate C value within the range for the appropriate land use. Generally, larger areas with permeable soils, flat slopes, and dense vegetation should have the lowest C values. Smaller areas with slowly permeable soils, steep slopes, and sparse vegetation should be assigned the highest C values From the American Society of Civil Engineers Adapted from the NCDENR Erosion and Sedimentation Control Planning and Design Manua~ e e e e - A3 RAINFALL INTENSITY Return Period (yrs.) Storm Duration 2 I 10 25 50 100 Hours Minutes Rainfall Intensity (in/hr.) 0 5 5.03 7.03 8.21 9.00 9.92 0 6 4.78 6.75 7.89 8.65 9.53 0 7 4.55 6.49 7.59 8.32 9.17 0 8 4.34 6.26 7.31 8.03 8.84 0 9 4.16 6.04 7.06 7.75 8.54 0 10 3.99 5.84 6.83 7.50 8.26 0 15 3.33 5.03 5.87 6.46 7.11 0 16 3.23 4.89 5.72 6.29 6.92 0 17 3.13 4.77 5.57 6.13 6.74 0 18 3.04 4.65 5.43 5.97 6.57 0 19 2.96 4.53 5.30 5.83 6.41 0 20 2.88 4.43 5.17 5.69 6.26 0 21 2.80 4.32 5.05 5.56 6.12 0 22 2.73 4.23 4.94 5.44 5.98 0 23 2.66 4.14 4.83 5.32 5.85 0 24 2.60 4.05 4.73 5.21 5.73 0 25 2.54 3.96 4.63 5.10 5.61 0 26 2.48 3.88 5.54 5.00 5.50 0 27 2.43 3.81 4.45 4.90 5.39 0 28 2.38 3.73 4.36 4.81 5.29 0 29 2.33 3.66 4.28 4.72 5.19 0 30 2.28 3.60 4.20 4.64 5.09 0 40 1.90 3.05 3.56 3.93 4.32 0 50 1.64 2.66 3.10 3.43 3.76 1 0 1.45 2.36 2.76 3.05 3.34 2 0 0.88 1.45 1.70 1.89 2.06 3 0 0.65 1.07 1.25 1.40 1.52 6 0 0.38 0.62 0.73 0.82 0.89 12 0 0.22 0.36 0.42 0.47 0.51 24 0 0.13 0.20 0.24 0.27 0.29 For collector systems and private property drainage, the Engineer shall be required to design for the 10-year Return Period. For street crossings, the Engineer shall be required to design for the 25-year Return Period. Adapted from IOF curve for Charlotte, NC A4 FLOW WITHIN A SYSTEM I 1000 900 800 EXAMPLE: Given discharge Q = 4.4 c.f.s. 700 friction factor n = 0.012 600 slope of 0.0039 per foot 500 FIND: Diameter 15 inches and 4.00 velocity of 3.5 ft. per second, by following dashed line 300 2 200 120 .0001 108 0 96 .0002 Z 90 0 84 Ü 100 78 .0003 3 W 90 72 .0004 (j) 80 66 70 60 .0006 0::: W 60 (j) 54 .OOOB N / D- W .0010 T""" / (f) 50 I48 0 / 4 I- / W LL Ü 42 0 / W Ü 40 Z 39 11/ / .0020 LL Z Z 36 .........c Z 30 - 33 »930 0::: 5 - W Z 30 0 >- CD <C 27 / .0040 LL I- 0::: 0::: 24 / .0060 W 6 Ü « 20 ....... I 0 / .0080 D- O / 0 ...J Ü LL 21 / .0100 7 W ....... ...J (j) o 18 ....... (f) > 0 0::: ....... / W ....... .0200 8 10 I- 15 9 w""'" .0300 8 /~12 9 .0400 7 / <C 10 6 ....... o 10 .0600 / / .OBOO 11 ~ 8 .1000 12 4 13 3 14 6 NOMOGRAPH FOR 15 2 COMPUTING REQUIRED SIZE OF CIRCULAR CONC. PIPE, FLOWING FULL n = 0.012 1 Adapted from Engineering Manual, Army Corps of Engineers, June 1955 0.9 A5 CULVERT DESIGN INLET CONTROL 180 10000 (1 ) (2) (3) 168 8000 6. e 156 6000 6. 5000 HW/D ENTRANCE 5. 144 6. 5. 4000 SCALE IYE..E. 132 (1 ) Square edge with 5. 4, 3000 headwall 4. 120 (2) Groove end with 2000 headwall 4. (3) Groove end 3. 108 projecting 3. 3. 96 1000 ,......... 0 800 - e 84 s 2. 2. (f) 600 """"I W 500 ........ ........... I ........ 2. ........ Cf) Ü 400 ........ 72 ~\..~........ a::: z Cf) 300 -tJ"~ W 1.5 1.5 - «:.......... - Z LL ........ W ........ 60 U 200 ........ ~ 1.5 ,......... ........ 0 z ........ « ........... ........ EXAMPLE 54 ........ 0 - o '" 42 inches (3.5 feet) a:: 100 Q '" 120 CFS Z W 48 - ........ W 80 HW/D· HW (Feet) > ........ (9 I ....J ........ (1 ) 2.5 8_8 - 1.0 :J ........ cr:: 60 (2) 2.1 7.4 a.. 1.0 42 U « 50 (3) 2.2 7.7 W 1.0 LL I 40 . 0 in feet 0 U .9 .9 0 36 Cf) 30 cr:: .9 cr:: W 33 0 - W 20 « .8 - 30 S .8 W .8 ~ 0 « 27 « 10 W .7 0 I .7 e 24 8 .7 6 21 5 4 .6 .6 .6 3 18 2 15 .5 .5 .5 e To use scale (2) or (3) draw a straight line through known values of sized and discharge to intersect scale (1). From 12 point on scale (1) project horizontally to solution on either scale (2) or (3)_ HEADWATER DEPTH FOR Adapted from the Bureau of Public Roads CONCRETE PIPE CULVERTS WITH INLET CONTROL A6 CULVERT DESIGN - OUTLET CONTROL Q.) 0> s..... co ..c () en .- o 2000 1000 800 600 500 400 300 (j) LL Ü c 200 ........... a - 100 / / ;.BeY' en Q) ..c 60 () c:: 50 C 40 - 0 --- 30 I- Q.) ....... Q) 20 E co 0 10 8 6 5 4 OJ t: ~ C'J t: 'Ë :J t- 120 108 96 84 72 66 60 54 48-/ / / 42 36 33 30 27 24 21 18 15 12 ":~ / -~ ____ ho ~ Slope So - SUBMERGED OUTLET CULVERT FLOWING FULL HW = H + ho . LSo / / / / / / / 1; /"/ ~o /<:?' '(9 -T;/ X ç:¡ç:¡ "'I"'\. <;III. \\..).$ ~ '" ~¿( ",.".\:')' - 0 '/ .. -',J' ~ \:') c~$'\..'G. ç:¡ç:¡ f',( J 0. ...1.,..- ðJ" r¡; :/. "7 L=110 ~~- '0 -D~8~M ~ ~ "çs ?J\j\j ~ <91" t>.\j\:¡ ....... Q) Q.) u.. c ~\:¡ç:¡ :.=- I --- "'0 CO Q) I e 0.4 0.5 0.6 0.8 1.0 e 2 3 4 e 5 6 8 10 20 e HEAD FOR _ CONCRETE PIPE CULVERTS FLOWING FULL n = 0.012 Adapted from the Bureau of Public Roads e e e . . Projt:ct: By: Dale: A7 RATIONAL METHOD PIPE DESIGN FOR INLET CONTROL Type of Channel Type of Channel Type of Channel x x x Elevation ] Elevation ] Elevation 1 Elevation 2 Elevation 2 Elevation 2 !!.y ft !!.y ft ð,y ft L ft L ft L ft TIME OF CONCENTRATION Tc "" x min. Tc= x min. Tc= x mÎn. = min. "" min. = min. I Tc total = min. DETERMINA TION OF "C" VALUE Type of Land Use : Range = Choose C "" I I Reason for C : RAINFALL INTENSITY Tc total = min. Return Period years I Rainfall Intensity, 1= in/hr I DRAINAGE AREA Area = sq. ft, /43,560 I Drainage Area "" acres I DISCHARGE CALCULATION Q= X X C I (inlhr) A (acres) [º ;0 cft [ PIPE SIZE AND HEADWATER For RCP & HDPE use : n=0.0]2 HW/D = (scaling factor) n= s= IYo HW = X / 12 in - Q= cis (HW/D) Diameter Diameter = in. Velocity"" ftls I HW = ji e e THIS PAGE IS INTENTIONALLY LEFT BLANK e . . e e e e e A8 Sa111ple Calculation for Determining Required Pipe Size Given: Drainage Area = 27 Acres Length of Longest Drainage Path = 1000 Feet Drainage Path Has the Following Characteristics: tit Concrete Channel with Elevation Change of 3 feet y,. Grassed Channel with Elevation Change of 5 feet Y2 Overlm1d Grass Flow with Elevation Change of 7 feet Drainage Area Has the Following Characteristics: 2/) Single-Family Residential with Flat Slopes II) Neighborhood Business with Flat Slopes Find: Required Pipe Size for a Roadway Crossing Using Concrete Pipe With a Square Edge Headwall at a Slope of 1.0% Solution: 1. Calculate Length of Concrete Channel, Grassed Channel, and Overland Grass Flow a. b. Concrete Channel: 1000' X 0.25 = 250' Grassed Channel: 1000' X 0.25 = 250' Overland Grass Flow 1000' X 0.50 = 500' c. 2. Use the Nomograph Al Time of Concentration to Determine Tc a. L = 250' and ðY = 3' yields Tc = 3 min.; 3 min. X 0.2 = 0.6 min. b. L = 250' and ð Y = 5' yields Tc = 2.5 min.; 2.5 min. X 1 = 2.5 min. c. L = 500' and ð Y = 7' yields Tc = 4.7 min.; 4.7 min. X 2 = 9.4 min. Add a, b, and c for final Tc; The minimum Tc is 5 min.; 0.6 + 2.5 +9.4 = 12.5 min. 3. Determine C value from Table A2 Determination of"C" Value a. Single Family Residential with Flat Slopes Has a Range of 0.30-0.50. Choose C to be 0.35 b. Neighborhood Business with Flat Slopes Has a Range of 0.50-0.70. Choose C to be 0.55 Distribute 2/3 of the C Value to Single Family Residential and '/3 of the C Value to Neighborhood Business and the Final C Value will be the Sum of the Distribution 2/3 X 0.35 = 0.23 I - 13 X 0.55 = 0.18 0.23 + 0.18 = 0.41 = C 4. Determine the Rainfall Intensity (I) from Table A3 Rainfall Intensity a. b. From Number 2, T = 12.5 min. Roadway Crossings Shall Be Designed for the 25-Year Return Period e Using a Linear Interpolation, I = 6.35 in/hr 5. Drainage Area (A) is Given at 27 acres 6. Determine the Peak Flow (Q) by the Equation Q = CIA Q= C I A Q= 0.41 X 6.35 in/hr X 27 acres e Q = 70.3 cis 7. Determine the Required Pipe Size and Velocity from Nomograph A4 Flow Within A System a. Given n = 0.012 and slope = 1.0% b. Nomograph shows Diameter = 42 inches c. Nomograph shows Velocity = 10fi/s 8. Determine HW/D Scale Factor from Nomograph A5 Culvert Design - Inlet Control and a Calculate Headwater Depth (HW) measured from the invert of the pipe upward. _ (Note: The maximum HW/D is 1.2. If HW/D is above 1.2, the pipe size may be used, subject to approval by the Engineering Director, if adequate storage is available. If adequate storage is not available, increase the pipe by one size and obtain a new Velocity and HW/D. Repeatthis process until HW/D is 1.2 or less.) HW/D = 1.3 HW = HW/D X (Diameter/12) e HW = 1.3 X (42/12) = 4.55 feet 9. IfHW in number 8 is unacceptable, increase pipe to next size and re-calculate a. Diameter = 48 inches b. Velocity = 5.8 fils HW/D = 0.95 HW = HW/D X (Diameter/12) e HW = 0.95 X (48/12) = 3.80 feet ** See A9 Rational Method Pipe Design for Inlet Control - e e e Project: Snmple Calculation By: .Jane Doe Date: 8/21101 A9 RATIONAL METHOD PIPE DESIGN FOR INLET CONTROL Type of Channel Type of Channel Type of Channel Concrete Channel x 0.2 Grassed Channel x 1.0 Overland Grass x 2.0 Elevation 1 0 Elevation I 3 Elevation 1 8 Elevation 2 3 Elevation 2 8 Elevation 2 15 t:..y 3 ft t:..y 5 ft t:..y 7 ft L 250 ft L 250 ft L 500 ft TIME OF CONCENTRATION Tc= 3 x 0.2 min. Tc= 2.5 x I min. Tc"" 4.7 x 2 min. = 0.60 min. "" 2.50 min. = 9.40 min. I Tc total = 12.50 min. I DETERMINA TION OF "C" VALUE Type of Land Use : 2/3 Single Family Residential, 0.30-0.50; 1/3 Neighborhood Business, 0.50-0.70 Range = Varies Choose C = I 0.41 I Reason for C : Distribution of 0.35 for Single Family Residential; and 0.55 for Neighborhood Business RAINFALL INTENSITY Tc total = ]2.5 min. Return Period 25 years I Rainfall Intensity, I "" 6.35 in/hr I DRAINAGE AREA Area = 1,176,120 sq. ft. I 43,560 I Drainage Area = 27.0 acres I DISCHARGE CALCULATION Q'" 0.41 X 6.35 X 27.0 C I (in/hr) A (acres) IQ= 70.29 cft I PIPE SIZE AND HEADWATER For RCP & HDPE use n=0.012 HW/D = 0.95 (scaling factor) n= 0.012 s"" 1.0 % HW = 0.95 X 48 I 12 in - Q= 70.29 cfs (HW/D) Diameter Diameter "" 48 in. 1 Velocity "" 5.80 jtls I HW = 3.8 ft e e . THIS PAGE IS INTENTIONALLY LEFT BLANK e e . e . e e e ...Joœ-~.L"¡:·e~ b~ ou. 1/18/01 RESOLUTION OF THE MONROE CITY COUNCIL REGULAR MEETING OF AUGUST 21, 2001 TO NAME M. L. KING, JR. BLVD R-2001-63 THAT WHEREAS, the Monroe City Council has given extensive consideration of a way to honor the memory of the late Dr. Martin Luther King, Jr.; and WHEREAS, the Council has determined that it would be fit and proper to name the Western Loop (from the intersection of Dickerson Boulevard and Charlotte Avenue to the proposed intersection with Highway 200, South) the "M. L. King, Jr. Blvd." NOW, THEREFORE, BE IT RESOLVED THAT: Subject to the approval of the North Carolina Department of Transportation the section of the Western Loop horn the intersection of Dickerson Boulevard and Charlotte Avenue to Highway 200, South be named "M. L. King, Jr. Boulevard". Adopted this 21 st day of August, 2001. ATTEST: ~77lV~ eanne M. Deese, CIty Clerk R-2001-63