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Pipes installed using trenchless methods such as horizontal directional drilling (HDD) are subjected to tensile forces during installation. Polyvinyl chloride (PVC) pipe employing the Bulldog Restraint System (BRS) is being used for installation via HDD. Tensile tests were conducted for assemblies of PVC pipe 4 in. through 8 in. in diameter using BRS. The test specimens were subjected to constant displacement; load and strain were measured. The observations from and results of the tests are reported in this paper.
PVC pipe, horizontal directional drilling (HDD), internally restrained joint
Vice President, S&B Technical Products, Fort Worth, TX
President, Mechanical Problem Solving S.A., San José, Costa Rica