A. Minimum Grade: The minimum grade of all streets shall be four- tenths percent (0.4%).
B. Maximum Grade: Except where unusual topographic conditions justify an exception, the maximum grade of all streets shall not be greater than the following:
Street Type
|
Grade
|
Arterial | 3 percent |
Collector | 5 percent |
Minor | 7 percent |
(1987 Code § 12-417)