STANDARD SPECIFICATIONS FOR WATER DISTRIBUTION SYSTEM IMPROVEMENTS

LAURENS COUNTY WATER & SEWER COMMISSION REV 3.2 AUGUST 2012

WATER DISTRIBUITION SYSTEM MATERIALS 1.1

DESCRIPTION A.

1.2

Work included: Provide materials for water distribution system improvements as approved by LCWSC and as needed for a complete and proper installation.

QUALITY ASSURANCE A.

Unless otherwise noted or approved by the LCWSC all materials shall be manufactured in the United States. This section includes pipe and fitting material specification, joint material and encasement requirements.

B.

All materials/products that contact potable water must be third party certified as meeting the specifications of ANSI/NSF Standard 61. The certifying party shall be accredited by the American National Standards Institute.

C.

All chemicals/products added to public water supply must be third party certified as meeting the specifications of ANSI/NSF Standard 60. The certifying party shall be accredited by the American National Standards Institute.

D.

Natural rubber or other material which will support micro-biological growth may not be used for any gaskets, 0-rings, and other projects used for jointing pipes, setting meters or valves, or other appurtenances which will expose the material to the water.

E.

Comply with the latest revision of Reference Standards of the American National Standards Institute (ANSI) and American Waterworks Association (AWWA). 1.

A21.4 Cement-mortar lining for cast iron and ductile iron pipe and fittings for water (AWWA C104).

2.

A21.5 Polyethylene encasement for gray and ductile cast iron piping for water and other liquids (AWWA C105).

3.

A21.10 Gray iron and ductile iron fittings, 3” through 48” for water and other liquids (AWWA C110).

4.

A21.11 Rubber gasket joints for cast iron and ductile iron pressure pipe and fittings (AWWA C111).

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1.4

5.

A21.15 Flanged cast iron and ductile iron pipe with threaded flanges (AWWA C115).

6.

A21.50 Thickness design of ductile iron pipe (AWWA C150).

7.

A21 .51 Ductile iron pipe centrifugally cast, in metal molds or sand lined molds, for water or other liquids (AWWA C151).

8.

A21.53 Ductile iron compact fittings for 3” through 12” (AWWA C153).

9.

B16.l Cast iron pipe flanges and flanged fittings, Class 25, 125, 250, and 800.

10.

Reference Standards of the American Water Works Association (AWWA)

11.

C600 Installation of ductile iron water mains and their appurtenances.

12.

C651 Disinfecting water mains.

PRODUCT HANDLING A.

Protection of Pipe, Valves, and Appurtenances. 1.

Protection of Pipe, Gaskets, and Polyethylene Film a.

2.

Protection of Valves. a.

B.

Store rubber gaskets and polyethylene film under cover and out of direct sunlight. Do not store nuts, bolts, glands, and other accessories directly on the ground. Keep inside of pipe and fittings free of dirt and debris.

Keep materials off the ground and keep interiors free of dirt and debris. Do not expose valve interior to direct sunlight.

Special Storage of PVC pipe: 1.

Store in unit packages as received from manufacturer until just prior to use.

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2.

Stack units in such manner as to prevent deformation to pipe barrel and bells.

3.

Protect from direct sunlight by covering with opaque material if storage period will exceed six weeks.

4.

Avoid severe impact blows, gouging or cutting by metal surfaces or rocks.

PART 2- PRODUCTS 2.1

PIPE AND FITTINGS A.

General: 1.

The pressure rating of pipe must be capable of handling 1.5 times the maximum working pressure.

2.

No asbestos cement pipe allowed except in the repair of existing asbestos cement lines.

3.

Thermoplastic (PVC) pipe may not be used above grade.

4.

The use of solvent-weld PVC pipe and fittings in water mains larger is prohibited.

5.

All pipe fitting, packing, jointing materials, valves and fire hydrants must conform to Section C of the AWWA Standards.

6.

Pipe sizes 3” and larger: Use ductile iron or plastic pipes unless otherwise indicated.

7.

Pipe less than 3” size: Do not use unless approved by LCWSC engineer.

8.

Any pipe, solder, or flux used in the installation or repair of any public water system, used in any plumbing which provides water through connection to a public water system, for human consumption, shall be lead free. Lead free is defined as less than 0.2% lead in solder or flux and less than 8.0% lead in pipes and fittings. Leaded joints necessary for the repair of CIP shall be exempt from the above.

9.

All piping must be approved by the National Sanitation Foundation,

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and marked with National Sanitation Foundation approval at 18” intervals, and all submittal materials to be appropriately marked. B.

Pipe: 1.

2.

Ductile iron pipe (DIP): a.

Provide DIP for all pipe 14” diameter and larger, unless otherwise approved in writing by the LCWSC.

b.

Provide DIP for pipe smaller than 14” diameter where requested by the LCWSC.

c.

Provide DIP at all road, rail, creek, sewer line and other crossings as approved or directed by the LCWSC.

d.

Comply with ANSI/AWWA C150/A21.50 and C151/A21 .51.

e.

Wall thickness in accordance with Table 51.1 of ANSI/AWWA C151/A21.51 with working pressure of 350 psi, depth of cover indicated and Type 2 bedding conditions, minimum Class 350.

f.

Use cement mortar lining complying with ANSI/AWWA C104/A21.4, standard thickness.

Plastic pipe (PVC) 14” to 48”: a.

3.

Provide pipe complying with ANSI/AWWA C905 only where approved or requested in writing by the LCWSC. Otherwise, provide DIP.

Plastic pipe (PVC) 4” to 12”: a.

Provide PVC pipe complying with ASTM D2241, SDR 21 (Class 200).

b.

Provide pipe complying with ANSI/AWWA C900, Table 200, Pressure Class 200 (SDR 14) only where approved or requested in writing by the LCWSC.

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4.

Plastic pipe 3”: a.

5.

Provide pipe complying with ASTM D2241 for PVC , SDR 21.

Polyethylene (PE) pipe: a.

Provide IPS sized PE pipe complying with AWWA C-906, DR11 and pressure class 200 for directional drill and other applications approved in writing by the LCWSC.

b.

The pipe supplied under this Specification shall be DR high performance, high molecular weight, high density polyethylene pipe, and shall conform to ASTM D 1248 (Type III C, Category 5, P34). Minimum cell classifications values shall be 345434C as referenced in ASTM D 3350 - latest edition. All pipe resin shall be manufactured by the same company that manufactures the pipe itself, in accordance with these specifications, to ensure complete resin compatibility and total product accountability. The fittings supplied in this specification shall be molded or manufactured from a polyethylene compound having a cell classification equal to or exceeding the compound used in the pipe. To ensure compatibility of polyethylene resins, all fittings supplied under this specification shall be of the same manufacture as the pipe being supplied.

c.

Physical properties: 1)

d.

The pipe shall conform to the physical properties as described herein.

Approved Manufacturer: Performance Pipe and Poly Pipe.

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Property

Test Method

Unit

Value

Density Melt Index

ASTM Method ASTM D-1238

grams/cc grams/10 min

0.955 (190/2.16)

ASTM D 1693 ASTM F 1248 ASTM D 638 (2"/min) ASTM D 638 (2"/min) ASTM D 1525 ASTM D 746 ASTM D 790 ASTM D 638 ASTM D 2240 ASTM D 696 Dynatech-Colora

hrs hrs psi

>5000** >1500 3200

%

>750

°F °F psi psi Shore D in./in./ºF BTU,in/ft/2hrs/ºF

257