The size and slope of the building sewer shall be subject to the approval of the City Engineer, but in no event shall the diameter be less than four inches for four units or less or six inches for multiple use over four units. The slope of both the four- and the six-inch pipe shall not be less than one-eighth inch per foot.
(1979 Code, § 2.67) (Ord. 119, passed 8-16-1994)