(a) The grades of streets shall not be less than five-tenths percent (5/10%) nor exceed the following:
(1) Highways, primary and secondary thoroughfares or parkways, designated as such on the Transportation Plan: six percent (6%) unless prevented by topography.
(2) Local streets, minor streets, service drives and alleys: ten percent (10%).
(3) Pedestrian ways or crosswalks: twenty percent (20%), unless steps of an acceptable design are to be constructed.
(b) All changes in street grade above one percent (1%) shall be connected by vertical curves of a minimum length equal to thirty (30) times the algebraic difference in the rate of grade for highways, thoroughfares or parkways, and one-half (1/2) of this minimum for all other streets.
(c) The radii of curvature on the center line shall not be less than the following:
(1) Highways, thoroughfares and parkways: five hundred feet (500 ft.).
(2) Local streets, minor streets, service drives and alleys: one hundred feet (100 ft.).
(Ord. 7435-01. Passed 2-18-02.)