Calculate slopes, grades, and elevation changes for site grading projects.
| Application | Min Slope | Max Slope | Typical |
|---|---|---|---|
| Parking lot cross slope | 1.0% | 5.0% | 1.5-2% |
| Lawn away from building | 2.0% | 10.0% | 2-5% |
| Swale (turf) | 1.0% | 4.0% | 2% |
| Concrete sidewalk | 0.5% | 2.0% | 1-2% |
| ADA ramp (max) | - | 8.33% | 6-8% |
| Driveway (residential) | 1.0% | 15.0% | 5-8% |
| Road longitudinal | 0.5% | 12.0% | 2-6% |
| Flat roof drainage | 1/4"/ft | 1/2"/ft | 1/4"/ft (2%) |