1. Minimum centerline grade shall not be less than ¾ percent on streets with curbs, 1 percent on streets without curbs.
2. Maximum grade shall be 8 percent on collector, or arterial, and primary streets and 12 percent on local access streets.
3. Vertical curves shall be used at changes of grade exceeding 1 percent and shall be designed in relation to the extent of the grade change and to provide the following minimum sight distance:
A. For crests, each 4 percent difference in gradient, use 125 feet length of curve.
B. For sags, each 4 percent difference in gradient, use 100 feet length of curve.
4. Where the grade of any street at the approach to an intersection exceeds 4 percent, a leveling area shall be provided. The leveling area shall not be greater than a 4 percent grade for a minimum length of 50 feet from the edge of the cartway.
(Ord. 163, passed 2-28-2012, § 511)