Except by special permission from the City Engineer, no trench shall be excavated more than 250 feet in advance of pipe laying nor left unfilled more than 500 feet where pipe has been laid. The length of the trench that may be opened at any one time shall not be greater than the length of pipe and the necessary accessories which are available at the site ready to be put in place.
(1990 Code, § 25-157) (Ord. 62-672, passed 10-1-1962)