02470.00 1102 Section 02470 - Potable Water Pipe Materials Description
02470.00 Scope - This Section includes the requirements for ductile iron, steel, and polyvinyl
chloride (PVC) pipe 16 inches in diameter and smaller, for potable water systems. Materials
02470.10 General - Clearly mark all pipe with the type, class, thickness, and manufacturer's name,
as applicable. Lettering shall be legible and perm anent under normal conditions of handling and storage. All Materials in contact with potable water shall conform to ANSI/NSF Standard 61, Drinking Water System Components - Health Effects, or equivalent , and ANSI/NSF Standard 372, Drinking Water System Co mponents - Lead Content .
02470.20 Ductile Iron Pipe :
a.General - Use centrifugally cast ductile iron pipe meeting the requirements of AWWA C151. Ductile iron pipe shall have a cement -mortar lining and seal coating meeting the requirements of AWWA C104. Ductile iron pipe to be joined using bolted flanged joints shall be Special Thickness Class 53. All other ductile iron pipe shall be Special Thickness Class 50, unless otherwise shown or specified.
b.Nonrestrained Joints - Nonrestrained joints shall be rubber gasket, push- on type, or mechanical type meeting the requirements of AWWA C111. Restrained joints shall conform to 02475.50.
02470.31 High Density Polyethylene (HDPE) Pipe - Use HDPE pipe meeting the requirements of
ANSI/AWWA C906, Standard Code Designation of PE3408. Furnish all pipe with a minimum dimension ratio (DR) of 17. Join pipe using thermal butt fusion method that meets the requirements of ASTM D3261.
02470.40 Polyvinyl Chloride (PVC) Pipe 4 Inches a nd Larger :
a.PVC Pipe Smaller Than 14 inch Diameter - PVC pipe 4 inches in diameter up to but not including 14 inches in diameter shall meet the requirements of AWWA C900, have the same outside dimensions as ductile iron pipe, and have a minimum dimension ratio (DR) of 18 or as specified or indicated.
b.Large Diameter PVC Pipe - PVC pipe 14 inches in diameter to 16 inches in diameter shall meet the requirements of AWWA C905, have the same outside dimensions as ductile iron pipe, and have a minimum dimension ratio (DR) of 18 or as specified or indicated.
c.Joints - Joints shall meet the requirements of ASTM D3139 using a restrained rubber gasket conforming to ASTM F477. Solvent -welded pipe joints are not allowed.
02470.45 Polyvinyl Chloride (PVC) Pipe Under 4 Inches - Polyvinyl chloride (PVC) under 4 inches
in diameter shall meet the requirements of ASTM D2241. Pipe M aterial shall be PVC 1120, PVC 1220, or PVC 2120, and shall have minimum wall thickness equal to or greater than a standard dimension ratio (SDR) of 21, or as specified or indicated. Joints shall meet the requirements of ASTM D3139 using a restrained rubber gasket meeting the requirements of ASTM F477. Solvent welded pipe joints will only be allowe d when specified or indicated.
02470.50 Polyethylene Encasement - Polyethylene encasement shall conform to AWWA C105.
02470.70 1103 02470.60 Marking Tape and Wire :
a.Marking Tape - Marking tape shall consist of inert polyethylene plastic impervious to all know n alkalis, acids, chemical reagents and solvents likely to be encountered in the Soil. The width of the tape shall be as recommended by the manufacturer for the depth of installation. The tape shall be blue and imprinted continuously over its entire leng th in permanent black ink with the words "Caution - Water".
b.Detectable Marking Wire - Furnish d etectable marking wire with blue colored insulation and according to 00445.11. Furnish splice kits according to 00445.48.
02470.70 Acceptance - Ductile iron, HDPE, and PVC pipe will be accepted according to 00165.35
and this Section.
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Source: Oregon Standard Specifications for Construction, 2024 Edition. Pages 1168–1169 of 1,268. View official source ↗