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Note: Portions of this document or referenced document qualify for 2013 CBC Section 11B-202.4, Exception 2, and all or part of this information may only apply to California “Safe Harbored” elements addressed in that Exception.

11B-405.9.2 Curb or barrier.

A curb 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.

An elevation drawing shows a vertical clearance of less than 4 inches between the ramp surface and the bottom edge of a horizontal rail.

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 ADA Standards.

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