HomeMy WebLinkAbout33-1000-Water-Utilities_Rev_1Dennis Yarmouth Intermediate Middle School January 19, 2021
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33 1000 Water Utilities
PART 1 - GENERAL
1.1 GENERAL PROVISIONS
A. Attention is directed to the CONTRACT AND GENERAL CONDITIONS and all Sections within
DIVISION 01 - GENERAL REQUIREMENTS which are hereby made a part of this Section of
the Specifications.
B. The General Contractor shall either perform the work of this section with its own forces or shall
subcontract such work to a subcontractor who will furnish a performance and payment bond for
the complete scope of work and listing the Town of Yarmouth as the co-oblige. Such bond shall
be procured from a surety that is currently licensed to do business in Massachusetts and is
currently listed on the United States Treasure Department circular 570. A copy of such bond
shall be submitted to the Owner’s Project Manager for approval and shall be in place prior to the
subcontractor commencing any work on the project.
1.2 SUMMARY
A. Section Includes:
1. Pipe and fittings for site water line including water mains and laterals.
2. Valves.
3. Hydrants.
4. Backflow preventers.
5. Underground pipe markers. 6. Bedding and cover materials.
B. Related Sections:
1. Section 31 0000 - EARTH MOVING.
2. Section 31 1000 - SITE CLEARING.
3. Section 32 1216 - BITUMINOUS CONCRETE PAVING.
4. Provision of waste management: Section 01 7419, Construction of Waste Management Plan.
5. Provision of General LEED requirements and forms: 01 8113 Sustainable Design
Requirements.
1.3 REFERENCES
A. American Association of State Highway and Transportation Officials:
1. AASHTO T180 - Standard Specification for Moisture-Density Relations of Soils Using a
10 lb. Rammer and an 18 in. Drop.
B. American Society of Mechanical Engineers:
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1. ASME B16.18 - Cast Copper Alloy Solder Joint Pressure Fittings.
2. ASME B16.22 - Wrought Copper and Copper Alloy Solder Joint Pressure Fittings.
C. American Society of Sanitary Engineering:
1. ASSE 1012 - Backflow Preventer with Intermediate Atmospheric Vent.
2. ASSE 1013 - Reduced Pressure Principle Backflow Preventers.
D. ASTM International:
1. ASTM B88 - Standard Specification for Seamless Copper Water Tube.
2. ASTM C858 - Standard Specification for Underground Precast Concrete Utility
Structures.
3. ASTM D698 - Standard Test Method for Laboratory Compaction Characteristics of Soil
Using Standard Effort (12,400 ft-lbf/ft3).
4. ASTM D1557 - Standard Test Method for Laboratory Compaction Characteristics of Soil
Using Modified Effort (6,000 ft-lbf/ft3).
5. ASTM D1785 - Standard Specification for Poly Vinyl Chloride (PVC) Plastic Pipe,
Schedules 40, 80, and 120.
6. ASTM D2241 - Standard Specification for Poly Vinyl Chloride (PVC) Pressure-Rated Pipe (SDR Series).
7. ASTM D2466 - Standard Specification for Poly Vinyl Chloride (PVC) Plastic Pipe Fittings,
Schedule 40.
8. ASTM D2855 - Standard Practice for Making Solvent-Cemented Joints with Poly Vinyl
Chloride (PVC) Pipe and Fittings.
9. ASTM D2922 - Standard Test Method for Density of Soil and Soil-Aggregate in Place by Nuclear Methods (Shallow Depth).
10. ASTM D3017 - Standard Test Method for Water Content of Soil and Rock in Place by
Nuclear Methods (Shallow Depth).
11. ASTM D3035 - Standard Specification for Polyethylene (PE) Plastic Pipe (DR-PR) Based
on Controlled Outside Diameter.
12. ASTM D3139 - Standard Specification for Joints for Plastic Pressure Pipes Using Flexible Elastomeric Seals.
E. American Welding Society:
1. AWS A5.8 - Specification for Filler Metals for Brazing and Braze Welding.
F. American Water Works Association:
1. AWWA C104 - American National Standard for Cement-Mortar Lining for Ductile-Iron
Pipe and Fittings for Water. 2. AWWA C105 - American National Standard for Polyethylene Encasement for Ductile-Iron
Pipe Systems.
3. AWWA C111 - American National Standard for Rubber-Gasket
4. Joints for Ductile-Iron Pressure Pipe and Fittings.
5. AWWA C151 - American National Standard for Ductile-Iron Pipe, Centrifugally Cast, for
Water.
6. AWWA C500 - Metal-Seated Gate Valves for Water Supply Service.
7. AWWA C502 - Dry-Barrel Fire Hydrants.
8. AWWA C504 - Rubber-Sealed Butterfly Valves.
9. AWWA C508 - Swing-Check Valves for Waterworks Service, 2 in. (50 mm) Through 24in.
(600 mm) NPS.
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10. AWWA C509 - Resilient-Seated Gate Valves for Water-Supply Service.
11. AWWA C600 - Installation of Ductile-Iron Water Mains and Their Appurtenances.
12. AWWA C606 - Grooved and Shouldered Joints.
13. AWWA C700 - Cold-Water Meters - Displacement Type, Bronze Main Case.
14. AWWA C701 - Cold-Water Meters - Turbine Type, for Customer Service.
15. AWWA C702 - Cold-Water Meters - Compound Type.
16. AWWA C706 - Direct-Reading, Remote-Registration Systems for Cold-Water Meters.
17. AWWA C900 - Polyvinyl Chloride (PVC) Pressure Pipe, 4 in. through 12 in., for Water
Distribution.
18. AWWA C901 - Polyethylene (PE) Pressure Pipe and Tubing, 1/2 in. through 3 in., for
Water Service.
19. AWWA M6 - Water Meters - Selection, Installation, Testing, and Maintenance.
G. Underwriters Laboratories Inc.:
1. UL 246 - Hydrants for Fire - Protection Service.
1.4 SUBMITTALS
A. Section 01 3300 - Submittal Procedures: Requirements for submittals.
B. Product Data: Submit data on pipe materials, pipe fittings, valves, hydrants, and accessories.
C. Manufacturer's Certificate: Certify products meet or exceed specified requirements.
1.5 CLOSEOUT SUBMITTALS
A. Section 01 7700 - CLOSEOUT PROCEDURES.
B. Project Record Documents: Record actual locations of piping mains, valves, connections, thrust
restraints, and invert elevations.
C. Identify and describe unexpected variations to subsoil conditions or discovery of uncharted
utilities.
1.6 QUALITY ASSURANCE
A. Perform Work in accordance with MHD and MA DEP standards, including the potable water
supply construction permit issued for this project.
B. Maintain one copy of each document on site.
C. Valves: Manufacturer's name and pressure rating marked on valve body.
1.7 DELIVERY, STORAGE, AND HANDLING
A. Section 01 6000 - PRODUCT REQUIREMENTS: Requirements for transporting, handling,
storing, and protecting products.
B. Deliver and store valves in shipping containers with labeling in place.
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PART 2 - PRODUCTS
2.1 WATER PIPING
A. Pipe shall be ductile iron push on joint pipe manufactured in accordance with the requirements
of ANSI/AWWA C151/A21.51 and shall be thickness Class 52 with a minimal wall thickness of
0.31 inch for 6-inch pipe, 0.33 inch for 8-inch pipe, 0.35 inch for 10-inch pipe, and 0.37 inch for
12-inch pipe. Pipe thickness shall be designated in accordance with ANSI/AWWA C150/A21.50
and shall be based on laying connections and internal pressure as specified in the project plans.
The rated working pressure shall be a minimum of 350 psi. Push on joints for such pipe shall
be in accordance with ANSI A21.11/AWWA C111. Only in special circumstances will
mechanical joints be allowed with the prior approval of the Engineer. Pipe shall have cement
mortar lining twice the normal thickness and tar coating in accordance with ANSI A21.4-
90/AWWA C104. Pipe lengths shall be standard 18 feet or 20 feet unless otherwise approved.
Bell joint end shall have a rubber gasket to assure a permanent seal. The spigot end shall have
a slight bevel for easy passage through gasket.
B. Ductile iron water pipe shall be installed in a flat bottom trench, backfilled lightly with a selected
material removed in excavation with nothing larger than 2 inches in diameter. This material will be consolidated to centerline of pipe; after this is done the same materials will be used to
provide a 12-inch cover over the top of the installed main.
C. Ductile iron water pipe shall not be laid with a deflection of more than 12 inches.
2.2 HYDRANTS
A. Break flange type, (AWWA C502, latest revision), steamer connection 4-inch, 2-2¼ inch side
hose connections, national standard threads, positive drain, open left with pentagon operating nut, inlet 6 inches, 7-inch diameter barrel and mechanical joint hub. Hydrants shall be
restrained back to main, thrust block behind, 3/4-inch stone from bottom of hydrant boot to 8
inches over drain port, and 5-1/4 inch valve opening. All hydrants shall be set with steamer
facing the street or parking lots with a minimum of 15 inches from finish grade to bottom of
steamer connection. All hydrants shall be painted per Town of Yarmouth Water Department
requirements.
B. Hydrants shall be designed for 250 psi working pressure and shall conform in every respect to
the specifications adopted by the AWWA. Hydrants shall be given two coats of quality paint
after installation.
C. Hydrants shall be identical to present Town of Yarmouth Fire and/or Water Department
requirements.
D. The Town has standardized on American Darling Model No. B-62B as manufactured by American Flow Control Inc.
E. Installation: No hydrant shall be located within 20 feet of a driveway curb cut. Maximum allowed
distance for hydrant back from face of berm is 8 feet with a minimum distance of 2 feet. Bury
depth shall be 5’-6”.
F. There shall be no plantings such as, but not limited to, shrubs or bushes, planted within 10 feet
of any hydrant.
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2.3 SERVICE BOXES
A. Plug cover to be in cement or asphalt, the word ‘WATER’ shall be cast into the cover, the box
will be of a length in height to accommodate any bury depth with 1-foot adjustment height. The
overall height is to be 4-1/2 to 5-1/2 feet unless otherwise approved by the engineer. The
service box will be reinforced at arch and pipe ring area and will accommodate up to a 1-inch
curb stop. Service box rod will have a heavy ductile iron yoke with a brass copper pin. Service
boxes shall be identical to present Town of Yarmouth Water Department requirements.
2.4 VALVE BOXES
A. Valve boxes shall be cast iron, tar coated, two piece adjustable sliding type with a top flange
and a minimum inside shaft diameter of 5-1/4 inches. Boxes shall have the word ‘WATER’
clearly cast into the cover. Bell end of the lower sections shall in all cases be sufficiently large
enough to fit over the stuffing boxes of the valves. Valve boxes shall be buried 5 feet or deeper
to accommodate installation and have a minimum of 12-inch overlap so there is 1 foot
adjustment. A positive centering cap made of high strength plastics should be placed over the
valve onto which the valve box will be centered. Valve boxes shall be identical to present Town
of Yarmouth Water Department requirements.
2.5 GATE VALVES
A. Manufacturers: Shall be A.F.C. Series 2500 Resilient Seat, Mueller Resilient Seat, Metro Seat
#5460 & #5860. Gate boxes shall be identical to present Town of Yarmouth Water Department
requirements.
B. 2-1/2 inch and Smaller: Brass or Bronze body, non-rising stem, inside screw, single wedge or
disc, compression ends, with control rod, extension box and valve key. Open right. Epoxy coated.
C. 3 inch and Larger: AWWA C500, Iron body, bronze trim, non-rising stem with square nut, single
wedge, flanged ends, control rod, extension box and valve key. Open right. Epoxy coated.
2.6 BACKFLOW PREVENTERS
A. Manufacturers: Any manufacturer whose product meets the requirements of the specifications,
and the requirements of the Town of Yarmouth Water Department, shall be considered.
B. Furnish materials in accordance with MHD and MA DEP standards.
C. Reduced Pressure Backflow Preventers:
1. Comply with ASSE 1013.
2. Bronze body, with bronze internal parts and stainless steel springs.
3. Two independently operating, spring loaded check valves; diaphragm type differential
pressure relief valve located between check valves; third check valve opening under back pressure in case of diaphragm failure; non-threaded vent outlet; assembled with two gate
valves, strainer, and four test cocks.
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D. Double Check Valve Assemblies: Comply with ASSE 1012; Bronze body with corrosion
resistant internal parts and stainless steel springs; two independently operating check valves
with intermediate atmospheric vent.
2.7 UNDERGROUND PIPE MARKERS
A. Trace Wire: Magnetic detectable conductor, brightly colored plastic covering, imprinted with
"Water Service” in large letters.
2.8 BEDDING AND COVER MATERIALS
A. Bedding: 1-1/2 inch stone in accordance with Section M2.01.1 of the MHD Standards
B. Cover: 3/4-inch Crushed Stone in accordance with Section M2.01.4 of the MHD Standards
C. Soil Backfill from Above Pipe to Finish Grade: Ordinary Fill as specified in Section 310000 -
EARTHWORK.
D. Bituminous Asphalt Patch: Refer to patching requirements under Section 32 1216 - ASPHALT
PAVING.
2.9 JOINT RESTRAINT PRODUCTS
A. Wedge Action Retaining Joints may be used wherever approved by the Town of Yarmouth and
shall be manufactured of ductile iron conforming to ASTM A536. The mechanical joint restraint shall be Megalug Series 1100 or equal approved by the Town of Yarmouth DPW.
B. Concrete for Thrust Blocks: 4,000 psi concrete in accordance with Section M4.02.00 of the
MHD Standards.
PART 3 - EXECUTION
3.1 EXAMINATION
A. Verify building service connection and municipal utility water main size, location, and invert are as indicated on Drawings.
3.2 PREPARATION
A. Cut pipe ends square, ream pipe and tube ends to full pipe diameter, remove burrs.
B. Remove scale and dirt on inside and outside before assembly.
C. Prepare pipe connections to equipment with flanges or unions.
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3.3 BEDDING
A. Excavate pipe trench in accordance with Section 31 0000 - EARTHWORK for Work of this
Section.
B. Form and place concrete for pipe thrust restraints at change of pipe direction. Place concrete to
permit full access to pipe and pipe accessories. Provide square footage of thrust restraint
bearing on subsoil per detail.
C. Place bedding material at trench bottom, level fill materials in one continuous layer not
exceeding 8-inch compacted depth; compact to 95 percent.
D. Backfill around sides and to top of pipe in accordance with Section 31 0000 - EARTHWORK.
E. Maintain optimum moisture content of fill material to attain required compaction density.
F. Place fill materials in accordance with Section 31 0000 - EARTHWORK and Section 321216 -
ASPHALT PAVING.
3.4 INSTALLATION - PIPE
A. Maintain 10-foot horizontal separation of water piping from sewer piping, unless site constraints
prohibit.
B. Install pipe to indicated elevation to within tolerance of 5/8 inch.
C. Route pipe in straight line.
D. Install pipe to allow for expansion and contraction without stressing pipe or joints.
E. Form and place concrete for thrust restraints at each elbow or change of direction of pipe main.
F. Establish elevations of buried piping with not less than 5.5 feet of cover. If cover is less than 5.5
feet, the pipe shall be insulated with 2 inches of extruded polystyrene insulation. The pipe shall
maintain a minimum of 4 feet of cover.
G. Install trace wire continuous over top of pipe.
H. Backfill trench in accordance with Section 31 0000.
I. Install Work in accordance with MHD and MA DEP standards.
3.5 UNDERGROUND PIPE MARKERS
A. Manufacturers:
1. Any manufacturers of such products shall be considered. 2. Substitutions: Refer to Section 01 6000 - PRODUCT REQUIREMENTS.
B. Plastic Ribbon Tape: Bright colored, imprinted with "WATER” in large letters, minimum 6 inches
wide by 4 mil. thick, manufactured for direct burial service.
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C. Trace Wire: Magnetic detectable conductor, brightly colored plastic covering, imprinted with
"WATER SERVICE” in large letters.
3.5 INSTALLATION - VALVES
A. Set valves on compacted soil.
B. Center and plumb valve box over valve. Set box cover flush with finished grade.
C. Install Work in accordance with Town of Yarmouth and MA DEP standards.
3.6 SERVICE CONNECTIONS
A. Install water service in accordance with double check valve backflow preventer.
B. Install water service to of building. Connect to building water service.
C. Install Work in accordance with Mass State Plumbing Code.
3.7 DISINFECTION OF DOMESTIC WATER PIPING SYSTEM
A. CLOSEOUT SUBMITTALS
1. Section 017700 - Closeout Procedures
2. DISINFECTION REPORT:
a. Type and form of disinfectant used.
b. Date and time of disinfectant injection start and time of completion. c. Test locations.
d. Name of person collecting samples.
e. Initial and 24 hour disinfectant residuals in treated water in ppm for each outlet
tested.
f. Date and time of flushing start and completion. Disinfectant residual after flushing
in ppm for each outlet tested.
3. Bacteriological REPORT:
a. Date issued, project name, and testing laboratory name, address, and telephone
number.
b. Time and date of water sample collection.
c. Name of person collecting samples.
d. Test locations. e. Initial and 24 hour disinfectant residuals in ppm. for each outlet tested.
f. Coliform bacteria test results for each outlet tested.
g. Certify water conforms, or fails to conform, to bacterial standards of MA DEP
standards for drinking water.
h. Water Quality Certificate: Certify water conforms to quality standards of MA DEP,
suitable for human consumption.
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4. QUALITY ASSURANCE
a. Perform Work in accordance with AWWA C651 (equivalent to State standards).
b. Maintain one copy of each document on site.
5. QUALIFICATIONS
a. Water Treatment Firm: Company specializing in disinfecting potable water systems
specified in this section with minimum three years documented experience.
b. Testing Firm: Company specializing in testing and examining potable water
systems, approved by Commonwealth of Massachusetts.
c. Submit bacteriologist's signature and authority associated with testing.
6. DISINFECTION CHEMICALS
a. Chemicals: Chlorine solution used for disinfecting springs, wells, and other water
systems shall consist of a solution of water and liquid chlorine, sodium
hypochlorite, calcium hypochlorite, or chloride of lime.
b. Liquid forms of chlorine or sodium hypochlorite and powder forms of calcium
hypochlorite or chloride of lime shall be used according to the instructions supplied by the manufacturer and as recommended by the Massachusetts Department of
Health.
c. If sodium hypochlorite is already in solution as a laundry bleach containing 5.25%
sodium hypochlorite, it shall be used at the rate of one part per 12,000 parts of
water to be disinfected. The dosage should be sufficient to produce a chlorine
taste in the water.
7. EXAMINATION
a. Verify existing conditions before starting work.
b. Verify piping system has been cleaned, inspected, and pressure tested.
c. Perform scheduling and disinfecting activity with start-up, water pressure testing,
adjusting, and balancing, demonstration procedures, including coordination with
related systems.
8. INSTALLATION
a. Provide and attach required equipment to perform the Work of this section.
b. Perform disinfection of water distribution system and installation of system and
pressure testing.
c. Introduce treatment into piping system at a concentration of 50 mg Cl/L.
d. Maintain disinfectant in system for 24 hours. e. Flush, circulate, and clean until required cleanliness is achieved; use municipal
domestic water.
f. Replace permanent system devices removed for disinfection.
9. Disinfection, FLUSHING, AND SAMPLING:
a. Disinfect pipeline installation in accordance with AWWA C651. Use of liquid
chlorine is not permitted
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b. Upon completion of retention period required for disinfection, flush pipeline until
chlorine concentration in water leaving pipeline is no higher than that generally
prevailing in existing system or is acceptable for domestic use.
c. Legally dispose of chlorinated water. When chlorinated discharge may cause
damage to environment, apply neutralizing chemical to chlorinated water to
neutralize chlorine residual remaining in water.
d. After final flushing and before pipeline is connected to existing system, or placed in
service, employ an approved independent testing laboratory to sample, test and
certify water quality suitable for human consumption.
3.8 FIELD QUALITY CONTROL
A. Sections 01 4000 - QUALITY REQUIREMENTS and 017700 - CLOSEOUT PROCEDURES.
B. Pressure test system. Repair leaks and re-test.
1. After completion of pipeline installation, including backfill, but prior to final connection to
existing system, conduct, in presence of Architect/Engineer, concurrent hydrostatic
pressure and leakage tests in accordance with AWWA C600.
2. Provide equipment required to perform leakage and hydrostatic pressure tests. 3. Test Pressure: Not less than 200 psi or 50 psi in excess of maximum static pressure,
whichever is greater.
4. Conduct hydrostatic test for at least two-hour duration.
5. No pipeline installation will be approved when pressure varies by more than 5 psi at
completion of hydrostatic pressure test.
6. Before applying test pressure, completely expel air from section of piping under test. Provide corporation cocks so air can be expelled as pipeline is filled with water. After air
has been expelled, close corporation cocks and apply test pressure. At conclusion of
tests, remove corporation cocks removed and plug resulting piping openings.
7. Slowly bring piping to test pressure and allow system to stabilize prior to conducting
leakage test. Do not open or close valves at differential pressures above rated pressure.
8. Examine exposed piping, fittings, valves, hydrants, and joints carefully during hydrostatic pressure test. Repair or replace damage or defective pipe, fittings, valves, hydrants, or
joints discovered, following pressure test.
9. When leakage is detected, locate source, and make repairs. Repeat test until specified
leakage requirements are met.
C. Compaction Testing for Bedding: In accordance with ASTM D1557.
D. When tests indicate Work does not meet specified requirements, remove Work, replace and retest.
E. Frequency of Compaction Tests: As directed by Engineer.
END SECTION