36 C.F.R. § 1191.1 Accessibility guidelines.
(a) The accessibility guidelines for buildings and facilities covered by the Americans with Disabilities Act are set forth in Appendices B and D to this part. The guidelines serve as the basis for accessibility standards adopted by the Department of Justice and the Department of Transportation under the Americans with Disabilities Act.
(b) The accessibility guidelines for buildings and facilities covered by the Architectural Barriers Act are set forth in Appendices C and D to this part. The guidelines serve as the basis for accessibility standards adopted by the General Services Administration, the Department of Defense, the Department of Housing and Urban Development, and the United States Postal Service under the Architectural Barriers Act.