The building sewer shall be constructed of vitrified clay sewer pipe
conforming to the latest ASTM standards, except as superseded by the requirements
of specifications CSPA 1-63 for standard strength and CSPA 2-63 for extra
strength vitrachem sewer pipe or cast-iron soil pipe; ASTM A74-42 or asbestoscement
building sewer Class 200, maximum section length to be not more than 13 feet,
is acceptable, provided that it meets federal specifications SS-P-331b, dated
January 30, 1962, as amended, and provided that the couplings to be used are
approved by the City Plumbing Inspector or plastic pipe utilizing virgin resin
and meeting the ASTM three-edgebearing method for determining a crushing strength
of 2,000 pounds per linear foot throughout a temperature range of 32°
to 120° F. or no glue joints. Variations in these requirements may be
made in special circumstances if approved by the City Plumbing Inspector in
writing. Additionally, the City reserves the right to specify and require
the encasement of any sewer pipe with concrete or the installation of the
sewer pipe in concrete cradle if foundation and construction are such as to
warrant such protection in the opinion of the City Plumbing Inspector.
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