This standard covers materials and installation procedures for polyethylene encasement to be applied to underground installations of ductile-iron pipe. This standard may also be used for polyethylene encasement of fittings, valves, and other appurtenances to ductile-iron pipe systems. Appendix A contains notes on procedures for soil survey tests and observations and their interpretation to determine whether polyethylene encasement should be used.
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American National Standard for Polyethylene Encasement for Ductile-Iron Pipe Systems
American Water Works Association , 12/01/2005
Pages: 32
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