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Title: Newly Adopted Requirements For Validating The Hydrostatic Design Basis For Pe Piping Materials
Author: Stanley A. Mruk
Source: American Gas Association 1986
Year Published: 1986
Abstract: It is the common practice to estimate the longterm strength of a thermoplastic pipe from the results of pipe pressure tests that have been evaluated in accordance with method ASTM D 2837, Standard Method for Obtaining Hydrostatic Design Basis (HDB), For Thermoplastic Pipe Materials. It is also the engineering practice in the design of polyethylene fuel gas pipe to allow one third of the long-term strengths for pipe pressure rating and to reserve the other two thirds for all other considerations, including stresses that could be generated by bending, expansion/contraction, earth, and other loadings. The inherent assumption in this practice is that because of the ductility of PE, the design can ignore the effects of localized deformations that could crack brittle-like materials.

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