2016 California Standards for Accessible Design Pocket Guide - Eff. Jan. 1, 2017
11B-405.9.2 Curb or barrier.
A curb, 2 inches (51 mm) high minimum, or barrier shall be provided that prevents the passage of a 4 inch (102 mm) diameter sphere, where any portion of the sphere is within 4 inches (102 mm) of the finish floor or ground surface. To prevent wheel entrapment, the curb or barrier shall provide a continuous and uninterrupted barrier along the length of the ramp.
FIGURE 11B-405.9.2 ‡‡
CURB OR BARRIER EDGE PROTECTION
ETA Editor's Note
CBC requires either a curb or a barrier for edge protection at ramps, and does not recognize the extended floor or ground surface also permitted by 2010 ADAS.
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