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Research has shown that polyethylene encasement alone is a viable corrosion protection system for Ductile and gray-iron pipe in most environments. However, other options should be considered for uniquely severe environments as defined in ANSI/AWWA C105/A21.5.

This standard describes materials and installation procedures for polyethylene encasement to be applied to underground installations of ductile-iron pipe. This standard also may be used for polyethylene encasement of fittings, valves, and other appurtenances to ductile-iron pipe systems.

ANSI /AWWA Standards: ANSI/AWWA C105/A21.5, Polyethylene Encasement for Ductile Iron Pipe Systems. In the United States, the film is specifically manufactured to meet the formulation, physical tests, thickness, and dimensional requirements specified in …

This standard describes materials and installation procedures for polyethylene encasement to be applied to underground installations of ductile-iron pipe. This standard also may be used for polyethylene encasement of fittings, valves, and other appurtenances to ductile-iron pipe systems.

2022年10月14日 · AWWA C105 covers the use of polyethylene encasement for corrosion protection of Ductile iron pipe. Polyethylene encasement is the most popular, economical, and successful method of corrosion control for Ductile Iron Pipe.

2018年6月9日 · These test methods cover the determination of the energy that causes plastic film to fail under specified conditions of impact of a free-falling dart. This energy is expressed in terms of the weight...

awwa c105-10 Polyethylene Encasement For Ductile-Iron Pipe Systems This standard covers materials and installation procedures for polyethylene encasement to be applied to underground installations of ductile-iron pipe.

For protection in areas of severely aggressive soils, AWWA C105 covers materials and installation procedures for polyethylene encasement of underground installations of ductile iron piping for water and other liquids.

During the 1993 revision of AWWA C105, the A21 Committee reviewed the test data on 4-mil HDCL polyethylene and concluded that from all indications, it provided comparable protection of Ductile Iron Pipe to that afforded by the standard 8-mil LD polyethylene.