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Changes in strength of pressurized PVC pipe with time
Author(s) -
Hucks Robert T.
Publication year - 1981
Publication title -
journal ‐ american water works association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.466
H-Index - 74
eISSN - 1551-8833
pISSN - 0003-150X
DOI - 10.1002/j.1551-8833.1981.tb04738.x
Subject(s) - piping , pipe , materials science , hydrostatic pressure , composite material , hydrostatic test , structural engineering , engineering , mechanical engineering , mechanics , physics
PVC pipe strength increased significantly during a 10‐year study with the pipe at steady hydrostatic pressure. Pipe was held at one and two times the design pressure rating and was tested periodically for strength by burst testing. After the pipe's 10‐year exposure at twice the pressure rating, the strength was 22 percent higher than that of the original, unstressed pipe. Elastic properties of the pipe wall were unaffected. After 10 years the appearance of the pipe—both to the unaided eye and under a microscope—was excellent. These results should be reassuring to designers of piping systems.