All changes in grade in residential streets shall be connected by vertical curves, the minimum length of which satisfies the following requirements:
(A) Twenty times (measured in feet) the algebraic difference in the rates of grade;
(B) A minimum stopping sight distance of between 150 and 250 feet depending upon whether the terrain is level, rolling or hilly, as defined in these regulations. The City Manager may increase minimum site distance based upon an analysis of site conditions;
(C) The appropriate maximum gradient as specified in the Table shall not be exceeded; and
(D) No street grade shall be less than 0.6% and in no case shall a street grade on a collector or arterial street be more than 5% within 100 feet of an intersection. Lesser classification of streets shall in no case have a street grade in excess of 10% within 100 feet of an intersection. For slopes, refer to §§ 151.240 through 151.249.
(Prior Code, § 23.05.09) Penalty, see § 151.999