Technical designs




The U.S. Department of Justice published revised regulations for Titles II and III of the Americans with Disabilities Act of 1990 "ADA" in the Federal Register on September 15, 2010. These regulations adopted revised, enforceable accessibility standards called the 2010 ADA Standards for Accessible Design "2010 Standards" or "Standards". The 2010 Standards set minimum requirements – both scoping and technical – for newly designed and constructed or altered State and local government facilities, public accommodations, and commercial facilities to be readily accessible to and usable by individuals with disabilities. According to ADA the height of toilet bowl shall be 17 inches (430 mm) at a minimum when measured from the floor to the top of the toilet seat. Flush controls shall be hand operated or automatic mounted on the wide side of the toilet area and easily reached and operated. Additionally, there is are important ADA requirement of clear floor space at water closet rooms. The following recommendations are becoming more common in public toilet facilities, as part of a trend towards universal design:

  • a wheelchair-height toilet, to help the user on and off the toilet, with handles (grab bars);
  • a bathroom emergency pullstring, in the form of a red cord that reaches the ground, connected to a buzzer and a flashing red light;
  • a wheelchair-height sink and hand dryer;
  • a wheelchair-width door;
  • additional options to upgrade a toilet are pit latrines that include a moveable wood seat with support bars.

Accessible toilets need larger floor space than other cubicles to allow space for a wheelchair to maneuver. This space is also useful for people who are not necessarily wheelchair users, but still need physical support from someone else. A wheelchair-height changing table is also recommended, but remains rarely available. Accessible changing tables are low and accessible to a wheelchair user, and long enough for a caretaker to change an older child or adult with a disability.

The main purpose of the extra tall bowl toilet is to help standing up and sitting down easier. Designers, residential and commercial building architects and toilet manufacturers are starting to recognize the importance of the appropriate height toilet. Wisconsin based Kohler company has a line of products named Comfort Height®, with toilet height of 17 inches. American Standard based in Piscataway, NJ has a toilet product line called Right Height™ of 16-1/2” rim height. Convenient Height Company from Massachusetts produces Convenient Height™ toilets with 20 inch height toilet bowls. The taller than standard and added height toilets are becoming popular when retrofitting homes to become more accessible.

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