§ 155.142 STREET GRADES, CURVES AND SIGHT DISTANCES.

   (A)   The grades of streets shall be not less than 0.5% and shall not exceed the following:

      (1)   Primary thoroughfares so designated on the Major Highway Plan: 4%;

      (2)   Secondary thoroughfares and parkways: 6%;

      (3)   Collector streets: 8%;

      (4)   Minor streets and alleys: 10%; and

      (5)   Pedestrian ways or crosswalks: 12% unless steps of an acceptable design are to be constructed.

   (B)   All changes in street grades above 1% shall be connected by vertical curves of a minimum length in feet equal to 80 times the algebraic difference in the rate of grade for thoroughfares and parkways, and one-half of this minimum for all other streets.

   (C)   The radii of curvature on the center line shall not be less than the following:

      (1)   Primary and secondary thoroughfares: 500 feet;

      (2)   Collector streets: 200 feet;

      (3)   Minor streets: 100 feet; and

      (4)   The tangent distance between reverse curves shall be a minimum of: 100 feet.

(1982 Code, § 55.122) (Ord. passed 4-21-1993; Ord. passed 7-25-2001)