The size, slope, alignment, materials of construction of a building sewer, 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 code provisions or in amplification thereof, the materials and procedures set forth in appropriate specifications of the A.S.T.M. and W.P.C.F. Manual of Practice No. 9 shall apply.
('77 Code, § 20-46(f)) (Ord. 374, passed 4-3-78; Am. Ord. 98-6, passed 2-17-98)