Outdoor Developed Areas: A Summary of Accessibility Standards for Federal Outdoor Developed Areas

Surface and Slope [1012.4 and 1012.5]

The surface of parking spaces and pull-up spaces for RVs must be firm and stable.

When the surface of parking spaces and pull-up spaces for RVs is constructed of asphalt, concrete, or boards, the slope of the parking spaces and pull-up spaces must be no steeper than 1:48 (2 percent) in any direction. When the surface of parking spaces and pull-up spaces for RVs is constructed of materials other than asphalt, concrete, or boards, slopes no steeper than 1:20 (5 percent) are allowed when necessary for drainage.