HAR 6-77-38
HAR 6-77-38 Design limitations for plastic pipe
gauge pressure of 689 kPa (100 p.s.i.g.) for plastic pipe used in:#
(1)Distribution systems; or#
(2)Class 3 and 4 locations.#
(b)Plastic pipe may not be used where operating temperatures of the pipe will be:#
(1)Below minus 29E C (-20E F); or#
(2)In the case of thermoplastic pipe, above the temperature at which the long-term hydrostatic strength used in the design formula under '6-77-34 is determined, except that pipe manufactured before May 18, 1978, may be used at temperatures up to 38E C (100E F); or in the case of reinforced thermosetting plastic pipe, above 66E C (150E F).#
(c)The wall thickness for thermoplastic pipe may not be less than 1.57 millimeters (0.062 in.).#
(d)The wall thickness for reinforced thermosetting plastic pipe may not be less than that listed in the following table: __________________________________________________________________ Nominal size in inches │ Minimum wall thickness │ in millimeters#
(inches)2.......................................│ 1.52 (0.060) 3.......................................│ 1.52 (0.060) 4.......................................│ 1.78 (0.070) 6.......................................│ 2.54 (0.100) │ │ [Eff ] (Auth: HRS '269-6) (Imp: 49#