1991 ADA Standards for Accessible Design

2. GENERAL.

2.1 Provisions for Adults.

The specifications in these guidelines are based upon adult dimensions and anthropometrics.

2.2* Equivalent Facilitation.

Departures from particular technical and scoping requirements of this guideline by the use of other designs and technologies are permitted where the alternative designs and technologies used will provide substantially equivalent or greater access to and usability of the facility.