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Widespread use of a piping product will only be achieved when there are detailed comprehensive product performance standards that can be confidently utilized by the specifying engineer. These standards should establish the performance criteria and requirements so that products made by different processes and materials can be validly evaluated and compared on the most important basis — performance.
Fiberglass pipe product standards issued by ASTM and the American Water Works Association have undergone substantial changes over the past few years. Among these significant changes have been the expansion to multiple stiffness ranges, a 50 year design basis criteria, increased deflection to crack-damage requirements, establishment of a long term ring bending strength test method, and updating and modification of test methods and performance criteria for strain corrosion and hydrostatic design basis. A major revision of the design appendix of AWWA C950 has been completed. AWWA and ASTM product standard requirements have been made consistent.
This review of fiberglass pipe product standards, the major revisions, and the upgrading of performance requirements will demonstrate that fiberglass pipe can be confidently evaluated, specified and used in a wide variety of applications.
fiberglass pipe, performance standards, pipe design, shape factors, combined loading
Pearson, Lee E.
Manager, Product Design & Process Technology, International Pipe Operations, at Owens-Corning Fiberglas Corporation, Toledo, Ohio