36 CFR Part 1191 ABA Accessibility Guidelines, Outdoor Developed Areas - Preamble

1016.7 Slopes

This section contains technical requirements for the maximum running slope and segment length (1016.7.1) and cross slope (1016.7.2) of outdoor recreation access routes.

1016.7.1 Maximum Running Slope and Segment Length

This section requires the running slope of any segment of an outdoor recreation access route to not be steeper than 1:10 (10%). Where the running slope of a segment of an outdoor recreation access route is steeper than 1:20 (5%), the maximum length of the segment is specified in Table 1016.7.1, and a resting interval is required at the top and bottom of each segment. Gradual running slopes are more useable by individuals with disabilities. Where the terrain results in steeper running slopes, resting intervals are required more frequently. Where running slopes are less severe, resting intervals are permitted to be further apart.

1016.7.2 Cross Slope

This section requires the cross slope of outdoor recreation access routes to not be steeper than 1:48. Where the surface is other than asphalt, concrete, or boards, cross slopes not steeper than 1:20 are permitted when necessary for drainage.