22 CAR § 111-1103
| 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.
Codification Notes: "ADA" means Americans with Disabilities Act of 1990.