(a) The grades of streets shall not exceed the following.
(1) Principal streets: 7%.
(2) Secondary streets, minor streets and service drives: 12%.
(3) Pedestrian ways or crosswalks: 12%.
(b) The grade of side ditches shall not be less than 0.25%.
(c) All changes in street grades shall be connected by vertical curves of a minimum length equal to 15 times the algebraic difference in the rate of grade, for principal streets, and one-half of this minimum for all other streets.
(d) The radii of curvature on the centerline shall not be less than the following.
(1) Principal streets: 300 feet.
(2) Secondary streets and minor streets: 100 feet.
(e) A tangent at least 100 feet in length shall be provided between reversed curves.
(Ord. 1953-110, passed 12-30-1953)