{"operation":"document","citation":"HAR 6-77-37","title":"HAR 6-77-37 Design of plastic pipe","source_type":"regulation","agency":"Hawaii Public Utilities Commission","status":"current","official":true,"published_on":"1994-04-15","effective_on":"1994-09-03","summary":"accordance with the following formula, subject to the limitations of section 6-77-38: P = 2S x 0.32 t D-t P = Design pressure, gage, kPa (psi). S = For thermoplastic pipe the long-term hydrostatic strength determined in accordance with the listed specification at a temperature equal to 23E C (73E F)","machine_formats":{"json":"https://regulus.evalyn.ai/document/hi-har-har-6-77-37.json","markdown":"https://regulus.evalyn.ai/document/hi-har-har-6-77-37.md"},"app_url":"https://regulus.evalyn.ai/document/hi-har-har-6-77-37","source_url":"https://puc.hawaii.gov/wp-content/uploads/2026/04/HAR-6-77-Transp-of-Gas-03-31-2026.pdf","body":"accordance with the following formula, subject to the limitations of section 6-77-38: P = 2S x 0.32 t D-t P = Design pressure, gage, kPa (psi). S = For thermoplastic pipe the long-term hydrostatic strength determined in accordance with the listed specification at a temperature equal to 23E C (73E F), 38E C (100E F), 49E C (120E F), or 60E C (140E F) for reinforced thermosetting plastic pipe, 75,800 kPa (11,000 p.s.i.). t = Specified wall thickness, mm (in.). D = Specified outside diameter, mm (in.). [Eff ] (Auth: HRS '269-6) (Imp: 49 C.F.R. '192.121, October 1, 1990)","truncated":false,"body_characters":573}