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ADAAG Manual

Note: This document, portion of document or referenced document was published prior to the 2010 ADA Standards, and all or part of this information may only apply to Safe Harbored elements.

Surface Textures [4.3.6]

Accessible routes do not necessarily have to be paved, but must be "firm, stable, and slip-resistant" so that they are safe and usable by people who use wheelchairs or who walk with difficulty. Since there are no uniform test procedure or measurable values for these characteristics (except for slip-resistance), acceptable and unacceptable materials are not easy to categorize. Also, compaction, consolidants, grid forms and other treatments often make a difference in the usability of a certain material. In developing various outdoor environments, consultation with people with disabilities, including local groups and officials, can be helpful in determining acceptable designs and surface materials.

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