Ramp run length, slope, and required landings for a given rise, using the 1:12 maximum slope.
The 2010 ADA Standards cap ramp slope at 1:12 (about 8.33%). A single ramp run may rise no more than 30 inches before a level landing is required. This calculator gives the run length, segment count, and landings.
1:12, or about 8.33 percent, under the 2010 ADA Standards. Steeper ramps are not compliant for new construction.
A single run may rise no more than 30 inches before a level landing is required.
At least 36 inches of clear width between handrails under the 2010 ADA Standards.