(A) The maximum grades in percent shall be:
Design Speed
| Level
| Rolling
| Mountainous
|
60 | 3 | 4 | 6 |
50 | 4 | 5 | 7 |
40 | 5 | 6 | 8 |
30 | 9 | 10 | |
20 | 12 |
(B) A minimum grade for curbed streets normally should not be less than 0.5%, a grade of 0.35% may be allowed where there is a high type pavement accurately crowned and in areas where special drainage conditions may control.
(C) Grades for 100 feet each way from intersections should not exceed 5%.
(D) For streets and roads with projected annual average daily traffic less than 250, short grades, less than 500 feet long, may be no greater than 15.0%.
(Ord. 01-2000, passed 6-27-00) Penalty, see § 150.53