(a) The grades of streets shall not exceed the following, except that where unusual or exceptional conditions exist, the Village Engineer may modify these regulations:
Type of Street or Way | Grade (percent) |
Arterial | 4 |
Collector and service drives | 10 |
Cul-de-sac and service drives | 10 |
Minor (place or lane) | 15 |
Pedestrian ways or crosswalks | 12, unless steps of an acceptable design are to be constructed |
(b) In no event shall the minimum grade of any street be less than 0.5%.
(c) All changes in street grades in excess of 1% shall be connected by vertical curves of a minimum length equal to 15 times the algebraic difference in the rates of grade.
(Ord. 5-89, passed 5-8-1989)