accessibility standards for Federal outdoor developed areas 95 The following tables highlight the technical requirements for slope, width, and surface for different route types. Technical Requirements for Slope If Running Slope of Segment is Steeper Than But Running Slope of Segment is Not Steeper Than Maximum Length of Segment Cross Slope Trail 0:00 (0%) 1:20 (5%) any length Concrete, asphalt, boards—1:48 (2%) All other surfaces when necessary for drainage —1:20 (5%) 1:20 (5%) 1:12 (8.33%) 200 feet 1:12 (8.33%) 1:10 (10%) 30 feet 1:10 (10%) 1:8 (12%) 10 feet ORAR 0:00 (0%) 1:20 (5%) any length Concrete, asphalt, boards—1:48 (2%) All other surfaces when necessary for drainage —1:20 (5%) 1:20 (5%) 1:12 (8.33%) 50 feet 1:12 (8.33%) 1:10 (10%) 30 feet BAR 0:00 (0%) 1:20 (5%) any length Concrete, asphalt, boards—1:48 (2%) All other surfaces when necessary for drainage —1:20 (5%) 1:20 (5%) 1:12 (8.33%) 50 feet 1:12 (8.33%) 1:10 (10%) 30 feet Technical Requirements for Width and Surface MinimumWidth Surface AR 36 inches Firm, Stable, Slip Resistant PAR 48 inches Firm, Stable, Slip Resistant Trail 36 inches Firm and Stable ORAR 36 inches Firm and Stable BAR 60 inches Firm and Stable SUP No requirement Firm, Stable, Slip Resistant
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