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New Standard for Cured-in-Place Fiberglass Pipe

F 2019, Standard Practice for Existing Pipelines and Conduits by the Pulled-in-Place Installation of Glass Reinforced Plastic (GRP) Cured-In-Place Thermo Setting Resin Pipe (CIPP), will assist designers, specifiers, regulatory agencies, and others involved in the rehabilitation of conduits.

The new standard describes “procedures for the reconstruction of pipelines and conduits 4” to 48” (100-1200 mm) in diameter by the pulled-in place installation of a resin-impregnated, flexible fabric-tube into an existing conduit followed by inflation with compressed air. The resin/ fabric tube is cured by flow through the fabric tube of mixed air and steam. When cured, the finished cured-in-place pipe will be continuous and tight fitting. This reconstruction process can be used in a variety of gravity-flow applications such as sanitary sewers, storm sewers, process piping, electrical conduits and ventilation systems.”

Completed by a task group of the ASTM Trenchless Plastic Pipeline Technology Subcommittee F17.67, part of Committee F17 on Plastic Piping Systems, the standard applies to technology well known in Europe and new to the United States. “This particular product has passed several of the German DIN standards, and virtually all of the tests that should be passed by a fiberglass type of material in the United States,” said the task group chairman Jay Schrock, P.E., civil engineer, JSC International Engineering, Lakehead, Calif. “It has a higher flexural modulus than any of the other cured-in-place pipes. The principal shortcoming is that it costs more.”

Working on the task group were members of the trenchless technology industry, a public works agency, and U.S. and Denmark product manufacturers, who developed F 2019 with information gathered from European users, testing laboratories, and glass and pipe manufacturers.

F 2019 is the third generic ASTM standard for cured-in-place pipe liners, following standards on inversion and pulled-in-place tubing. It covers a tube composed of a fiberglass-reinforced material, where the previous liners were constructed of polyester woven or non-woven fabric.

Technical questions may be directed to Jay Schrock, JSC International Engineering, 19101 Rocky Trail, Lakehead, CA 96061 (530/238-2018; fax: 530/238-2019). Committee F17 meets Nov. 13-16 in Orlando, Fla. For meeting or membership information, contact Staff Manager Pat Picariello, ASTM (610/ 832-9720). //

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