Americans with Disabilities Act Accessibility Guidelines (ADAAG) Dimensional Tolerances

The ADAAG, adopted under the Vermont Access Rules, recognizes conventional industry standards for field conditions. For instance a handrail specified to be 1½ ” in diameter in accordance with section 4.26.2 is permitted to be almost 2” in diameter based on field condition standards for the trade. The outside diameter of a nominal 1 ½“ pipe is 1 29/32”.

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