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2013 Forest Service Outdoor Recreation Accessibility Guidelines (FSORAG)

6.9 Tread Obstacles.

 

Obstacles on beach access routes and their related resting intervals shall not exceed 1 inch (25 mm) in height measured vertically to the highest point. Where the surface is paved or is elevated above the natural ground, obstacles shall not exceed 1/2 inch (13 mm) in height measured vertically to the highest point. Where possible, obstacles should not be closer than 48 inches (1220 mm) apart.

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