22 CAR § 111-1103. Standards for grading streets and ways

CONDITIONS MAXIMUM MINIMUM PREFERRED Crown of improved streets 3% 33:1 1% 100:1 2% Crown of unimproved streets 3% 33:1 2% 50:1 2.5% Side slopes on walks 4% 25:1 1% 100:1 1 – 2% Tree lawns 20% 5:1 1% 100:1 2 – 3% Slope of shoulders 15% 6.6:1 1% 100:1 2 – 3% Longitudinal slope of streets 20% 5:1 0.5% 200:1 1 – 10% Longitudinal slope of driveways 20% 5:1 0.5% 200:1 1 – 10% Longitudinal slope of parking areas 5% 20:1 0.5% 200:1 1 – 5% Longitudinal slope of sidewalks 5% 20:1 0.5% 200:1 1 – 5% Longitudinal slope of valley section 5% 20:1 0.5% 200:1 2 – 3% Refer to 22 CAR § 111-1001 for grading requirements to meet ADA guidelines.