ADA Accessibility Guidelines (PDF)

The ADA Accessibility Guidelines (ADAAG) serve as the basis for standards enforced by the Department of Justice (DOJ).  The Access Board, which is responsible for the guidelines upon which the standards are based, has issued supplements to ADAAG that cover state and local government facilities, building elements designed for children's use, play areas, and recreation facilities.  These supplements are not yet part of the standards enforced by DOJ.  Both versions of ADAAG in PDF are available:

ADAAG  (enforceable standards)

Updated ADAAG (includes supplements not yet incorporated into the enforceable standards)