Section 4150.� Water Main, Valve, Fire Hydrant, and Appurtenance Materials
A.��� Pipe and fittings for constructing water mains.
B.��� Valves, fire hydrants, and appurtenances associated with water main � construction.
4150.02���� pipe and fittings.
1.���� Polyvinyl Chloride Pipe.
Comply with AWWA C900 or AWWA C905 with gray iron pipe equivalent outside diameters.
a.���� Minimum Wall Thickness.
1)��� 4 inch (100 mm) through 24 inch (600 mm) sizes: DR 18.
2)��� Sizes over 24 inch (600 mm): As specified in the contract documents.
b.���� Joint Type.
Use push-on joint type, except as otherwise required in the contract documents or as authorized by the Engineer.
1)��� Push-on: According to AWWA C900 or AWWA C905.
2)��� Integral Restrained Joint: AWWA C900 or AWWA C905 pipe with restraining system manufactured integrally into pipe end.
3)��� Mechanical Restrained Joint: Ductile iron mechanical device designed for joint restraint of AWWA C900 or AWWA C905 pipe complying with the requirements of ASTM F 1674.
c.���� Markings on Pipe.
1)��� Name of manufacturer.
2)��� Size and class.
3)��� Spigot insertion depth gage.
4)��� National Sanitation Foundation (NSF) seal.
2.���� Ductile Iron Pipe.
a.���� Minimum Thickness Class:
1)��� 4 inch (100 mm) through 24 inch (600 mm) sizes: Special thickness Class 52 according to AWWA C151.
2)��� Sizes over 24 inches (600 mm): As specified in the contract documents.
b.���� Cement-mortar Lined: According to AWWA C104 with asphalt seal coat.
c.���� External coating: Asphalt according to AWWA C 151.
d.���� Joint Type: Use push-on type, except as otherwise required in the contract documents or as authorized by the Engineer.
1)��� Push-on: According to AWWA C111.
2)��� Mechanical: According to AWWA C111.
3)��� Restrained, Buried: Pipe manufacturer's standard field removable system.
4)��� Restrained, in Structures: Restraining gland, flanged or grooved.
5)��� Flanged: According to AWWA C111.
6)��� Grooved: According to AWWA C606.
7)��� Gaskets: According to AWWA C111.
e.���� Markings on Pipe:
1)��� Name of manufacturer.
2)��� Size and class.
3)��� Spigot insertion depth gage.
B.��� Bolts for Water Main and Fittings.
Use corrosion resistant bolts.
1.���� Tee-bolts and Hexagonal Nuts for Mechanical Joints.
a.���� High strength, low alloy steel manufactured according to AWWA C111.
b.���� Provide ceramic filled, baked on, fluorocarbon resin coating for bolts and nuts.
c.���� Include factory applied lubricant that produces low coefficient of friction for ease of installation.
2.���� Other Bolts and Nuts.
a.���� Stainless steel.
b.���� Ductile iron.
c.���� Zinc, zinc chromate, or cadmium plated.
1.���� DIP and PVC Pipe.
a.���� Comply with AWWA C110 (ductile iron or gray iron) or AWWA C153 (ductile iron).
b.���� Joint Type:
1)��� For pipe sizes 16 inches (400 mm) and less, use mechanical joint complying with AWWA C111.
2)��� For pipe sizes greater than 16 inches (400 mm), use restrained mechanical joint system. Provide follower gland using breakaway torque bolts to engage thrust restraint.
a)��� Minimum pressure rating same as connecting pipe. For fittings between dissimilar pipes, the minimum pressure rating is the lesser of the two pipes.
b)��� Suitable for buried service.
c)��� Joint restraint system to be field installable, field removable, and re-installable.
3)��� Use of alternate restraint systems must be approved by the Engineer.
c.���� Cement mortar lined complying with AWWA C104 with asphalt coating.
d.���� Wall Thickness: Comply with AWWA C153.
e.���� Gaskets: Comply with AWWA C111.
2.���� Flange Adapter.
a.���� Body: Ductile iron complying with ASTM A 536.
b.���� End Rings (Follower Rings): Ductile iron complying with ASTM A 536.
c.���� Gaskets: New rubber compounded for water service and resistant to permanent set.
d.���� Bolts and Nuts: High strength, low alloy corrosion resistant steel or carbon steel bolts complying with ASTM A 307.
3.���� Pipe Coupling.
a.���� Center Sleeve (Center Ring): Steel pipe or tubing complying with ASTM A 53/A 53M or ASTM A 512, or formed carbon steel with a minimum yield of 30,000 psi (207 MPa).
b.���� End Ring (Follower Ring): ductile iron complying with ASTM A 536, or steel meeting or exceeding the requirements of ASTM A 576, grade 1010-1020.
c.���� Gaskets: New rubber compounded for water service and resistant to permanent set.
d.���� Bolts and nuts: High strength, low alloy corrosion resistant steel.
1.���� Use Class C concrete.
2.���� Refer to the contract documents for dimensions and installation of thrust blocks.
3.���� Use for all pipe sizes 16 inches (400 mm) in diameter or smaller when specified.
1.���� Polyethylene Wrap.
a.���� Comply with AWWA C105.
b.���� Provide tubes or sheets with 8 mil (200 μm) minimum thickness.
2.���� Tracer System.
Refer to the contract documents for details.
a.���� Tracer
Wire: #12 AWG solid single copper
conductor.
1)��� Insulation Material: Linear low-density polyethylene
(LLDPE) installation suitable for direct burial applications.
Solid Single Copper Conductor.
a)��� Size:� #12 AWG.
b)��� Insulation Material:� Linear low-density polyethylene (LLDPE) installation suitable for direct burial applications.
c) �� Insulation Thickness:� 0.045 inches (1 mm), minimum.
2)��� Insulation Thickness: 0.045 inches (1 mm), minimum.
Bimetallic Copper Clad Steel Conductor.
a)��� Size:� #12 AWG.
b)��� Rating:� Direct burial.
c)��� Operating Voltage:� 30 volts.
d)��� Conductivity:� 21%.
e)��� Copper Cladding: 3% of conductor diameter, minimum.
f)���� Insulation Material:� High density polyethylene.
g)��� Insulation Thickness:� 0.030 inches (0.75 mm), minimum.
b.���� Ground Rod: 3/8 inch (10 mm) diameter, 60 inch (1.5 m) steel rod uniformly coated with metallically bonded electrolytic copper.
c.���� Ground-rod Clamp: High-strength, corrosion-resistant copper alloy.
d.���� Splice
Kit: Inline resin splice kit with split bolt for (1 kV and 5 kV). Insulates and seals for use with single conductor and unshielded
cable splices for in direct bury and submersible applications.
e. ��� Tracer Wire Station: Comply with the contract documents.
1.���� For soils contaminated with gasoline, use neoprene or nitrile gaskets.
2.���� For soils contaminated with volatile organic compounds, use nitrile or fluorocarbon gaskets.
3.���� For other soil contaminants, contact the Engineer for the required gasket.
G.��� Water Service Pipe and Appurtenances.
1.���� Controlling Standards.
Local plumbing and fire codes.
2.���� Materials.
a.���� Copper Pipe.
1)��� Comply with ASTM B 88.
2)��� Wall Thickness: Type K.
b.���� DIP.
As specified in Article 4150.02, A. Polyethylene wrap is required.
c.���� PVC Pipe.
ASTM D 1785, SDR 21, Schedule 80, Type S joints.
d.���� Brass Pipe.
Red, seamless, according to ASTM B 43.
e.���� Polyethylene Pipe.
Class 200, according to AWWA C901.
3.���� Corporations, Stops, and Stop Boxes.
Contact the Engineer for requirements.
Comply with Materials I.M. 491.13
Apply Section 2553.
1.���� Valve Body: Manufacturer's name and pressure rating cast on valve body.
2.���� Direction of Opening: The opening direction is counterclockwise as viewed from the top, unless specified otherwise in the contract documents or as directed by the Engineer.
3.���� Joints.
a.���� For buried installations, use mechanical joints per AWWA C111. Apply Article 4150.02, B, for joint nuts and bolts.
b.���� For installation within structures, flanged with dimensions and drillings according to AWWA C110 or ANSI B16.1 Class 125.
1.���� Standards: Comply with AWWA C509 (gray iron or ductile iron) or AWWA C515 (ductile iron) and NSF 61
2.���� Stem Seals: Double O-rings permanently lubricated between seals. Lubricant certified for use in potable water.
3.���� External Bolts and Hex Nuts: Stainless steel according to ASTM A 240/A 240M, Type 304.
1.���� Standards: Comply with AWWA C504 Class 150B (gray iron or ductile iron) and NSF 61.
2.���� Stem: Stainless steel according to ASTM A 240/A 240M, Type 304, turned, ground, and polished.
3.���� For Seat on Body Valves:
a.���� Disc: Ductile iron or gray iron with plasma applied nickel-chromium edge or stainless steel edge according to ASTM A 240, Type 316, and mechanically fixed stainless steel pins.
b.���� Seat: Synthetic rubber compound mechanically retained to the body.
4.���� For Seat on Disc Valves:
a.���� Disc: Ductile iron according to ASTM A 536 with synthetic rubber compound seat mechanically� retained to the disc.
b.���� Seat: Continuous Type 316 stainless steel seat.
5.���� External Bolts and Hex Nuts: Stainless steel according to ASTM A 240/A 240M, Type 304.
D.��� Tapping Valve Assemblies.
Use tapping valve assemblies only where specified in the contract documents.
1.���� Tapping Valve.
������� Gate valve complying with AWWA C509 or AWWA C515.
2.���� Sleeve.
a.���� Minimum 14 gage.
b.���� Stainless steel according to ASTM A 240/A 240M, Type 304.
c.���� Working pressure 150 psi (1035 kPa).
d.���� Must fully surround pipe.
e.���� Flanged with dimensions and drillings according to AWWA C110 or ANSI B16.1 Class 125.
3.���� Minimum Sleeve Length.
Apply Table 4150.03-1
|
Table 4150.03-1: Minimum Sleeve Length |
|
|
Outlet Flange Size, |
Minimum Sleeve
Length, |
|
4 (100) |
15 (375) |
|
6 (150) |
15 (375) |
|
8 (200) |
20 (500) |
|
10 (250) |
25 (625) |
|
12 (300) |
25 (625) |
|
over 12 (300) |
As approved by the Engineer |
4.���� Gasket.
a.���� To completely surround pipe.
b.���� Minimum thickness 0.125 inch (3 mm).
c.���� Use nitrile rubber.
5.���� Outlet Flange.
a.���� Stainless steel, according to ASTM A 240/A 240M, Type 304.
b.���� ANSI B16.1, 125 pound pattern.
6.���� Hex Nuts and Bolts.
Stainless steel according to ASTM A 240/A 240M, Type 304.
4150.04���� Fire Hydrant Assembly.
Comply with AWWA C502.
As allowed in the contract documents.
1.���� Breakaway Items: Stem coupling and breakaway flange.
2.���� Inlet Nominal Size: 6 inch (150 mm) diameter.
3.���� Inlet Connection Type: Mechanical joint.
4.���� Hose Nozzles: Two, each 2 1/2 inches (63 mm) in diameter.
5.���� Direction of Opening: Counterclockwise, unless specified otherwise.
6.���� Items to be Specified: The following items will be specified in the contract documents.
a.���� Operating nut.
b.���� Pumper nozzle.
c.���� Nozzle threads.
d.���� Main valve nominal opening size.
1.���� Shop coating according to AWWA C502.��������������
2.���� Above grade exterior coating type and color will be selected by the Engineer.
E.��� External Bolts and Hex Nuts.
Stainless steel according to ASTM A 193/A 193M, Grade B 8.
Apply Article 4150.03.
Apply Article 4150.02.
A.��� Flushing Device (Blowoff): As specified in the contract documents.
1.���� Applicability: For all buried valves.
2.���� Manufacturer: As specified in the contract documents.
3.���� Type:
a.���� In paved areas, use a slide type.
b.���� In all other areas, use a screw extension type.
4.���� Material: Gray iron.
5.���� Cover: Gray iron, labeled "WATER"
6.���� Wall Thickness: 3/16 inch (4.8 mm), minimum.
7.���� Inside Diameter: 5 inches (125 mm), minimum.
8.���� Length: Adequate to bring top to finish grade, including valve box extensions, if necessary.
9.���� Factory Finish: Asphalt coating.
10.� Valve Box Centering Ring: Include in installation.
For all buried valves, provide as necessary to raise 2 inch (50 mm) operating nut to within 3 feet (1 m) of the finish grade. Stem diameter according to valve manufacturer�s recommendations, but not less than 1 inch (25 mm).