Vertical street profiles shall conform to the grades listed below.
(A) Arterial streets: maximum grade - 4%.
(B) Collector and residential streets and alleys: maximum grade - 6%.
(C) Intersection approaches for at least 100 feet: maximum grade - 4%.
(D) Rate of grade change: maximum grade - 4%
(E) Minimum grade (normally only with curbs and gutters) - 0.1%
(Ord. 12-94, § 407, passed 1-17-95)