The size and slope of the building sewer shall be subject to the approval of the superintendent, but in no event shall the diameter be less than four inches. The slope of such four-inch pipe shall be not less than one-eighth inch per foot. For larger sizes of the pipe the minimum slopes shall be according to all state and local regulations.
(Ord. 81-50 § 5, 1980; Ord. 539 § 1, 1976; prior code § 20.508).