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2013 California Standards for Accessible Design Pocket Guide

Note: This document or portion of document references a state or local code that is stricter than the 2010 ADA Standards requires.

11B-406.5.8 Counter slope.

Counter slopes of adjoining gutters and road surfaces immediately adjacent to and within 24 inches (610 mm) of the curb ramp shall not be steeper than 1:20. The adjacent surfaces at transitions at curb ramps to walks, gutters, and streets shall be at the same level.

In cross section, a curb ramp with a maximum slope of 1:12 adjoins a surface at the bottom that has a maximum counter slope of 1:20

FIGURE 11B-406.5.8
COUNTER SLOPE OF SURFACES ADJACENT TO CURB RAMPS

Source: 2013 California Standards for Accessible Design Pocket Guide by California Building Standards Commission (edited by Evan Terry Associates) - published 01/01/2015

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