Proper barricades and lights shall be maintained on the banks of the trenches to guard the public against accidents during the progress of the work. In backfilling, material shall be carefully placed and packed around the pipe to provide a uniform bearing and to keep the pipe in proper position. No stones or bricks or the like shall be used in the backfill until there has been a depth of at least 18 inches of fine earth or gravel placed over the pipe. If blasting of rock is required in excavation, the utmost precaution shall be used to cover the blast with suitable cover such as mates, timber, brush and the like, so life and property in the vicinity will not be jeopardized.
(Ord. 1954-70, passed 11-1-54) Penalty, see § 52.99