Below are a few downloads I've run across that you might find of value
Planning Department, as a guide and reference on new construction and remodeling jobs requiring Accessible/Universal design.
ADA Americans With Disabilities Act.doc
With the passage of the Americans with Disabilities Act (ADA), washroom facilities in the USA must he designed to accommodate people with disabilities and meet ADA Accessibility
Guidelines (ADAAG), as well as meet specific requirements of local building codes
Curbless Showers: An Installation Guide Produced by The Center for Universal Design College of Design, North Carolina State University