The size, slope, alignment and materials of construction of all sanitary sewers, including
building sewers, and the methods to be used in excavating, placing of the pipe, jointing,
testing and backfilling the trench, shall all conform to the requirements of the building
and plumbing code or other applicable rules and regulations of the city. In the absence
of suitable code provisions or in amplification thereof, the materials and procedures
set forth in appropriate specifications of the ASTM and WPCF Manual of Practice No.
9 shall apply.
