This website is being developed by Evan Terry Associates to try to answer common questions about the proper use of “conventional industry tolerances” as defined by the 2010 ADA Standards. As new technical assistance is released by the U.S. Access Board (or the Department of Justice) on this subject and as questions are answered, we will update this page to reflect the new information. (For your reference, Sections 104.1.1, and 3.2, the relevant sections of the 2010 and 1991 ADA Standards concerning tolerances, are copied below.)
1991 ADA Standards
3.2 Dimensional Tolerances. All dimensions are subject to conventional building industry tolerances for field conditions.
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