All excavations required for the installation of a building sewer shall be open trench work unless otherwise approved by the Inspector. Pipe laying and backfill shall be performed in accordance with ASTM specifications; however, no backfill shall be placed until the work is inspected by the Inspector or his or her representative.
(Prior Code, § 51.32) (Ord. 9-1950, passed 9-22-1950; Ord. 3-1960, passed 1-18-1960; Ord. 2-1960, passed 1-18-1960) Penalty, see § 51.999