The 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.
Ada sink clearance from wall.
The minimum knee clearance must be free of equipment or obstructions for a minimum of 8 inches 205 mm extending from the front edge of the lavatory back toward the wall.
Clearances are required at accessible elements fixtures and controls so that people with disabilities including those who use wheelchairs can approach and use them.
The walls behind and surrounding the cabinetry are finished.
To meet ada guidelines sinks shouldn t be mounted higher than 34 inches from the floor and they should have a knee clearance of 27 inches high 30 inches wide and 11 to 25 inches deep.
This knee clearance must be 29 inches 735 mm high at the front of the lavatory and no less than 27 inches 685 mm high at a point 8 inches 205 mm back.
In pass through kitchens where counters appliances or cabinets are on two opposing sides or where counters appliances or cabinets are opposite a parallel wall clearance between all opposing base cabinets counter tops appliances or walls within kitchen work areas shall be 40 inches 1015 mm minimum.
For wheelchair accessibility the center line of the toilet must be between 16 18 405 455 mm from the wall.
This guide explains requirements in the ada standards for clear floor or ground space and turning space.
This knee clearance must be 29 inches 735 mm high at the front of the lavatory and no less than 27 inches 685 mm high at a point 8 inches 205 mm back.
A knee clearance of 24 inches 610 mm minimum above the finish floor or ground shall be permitted at lavatories and sinks used primarily by children 6 through 12 years where the rim or counter surface is 31 inches 785 mm maximum above the finish floor or ground.
You also need a clear floor space and insulated pipes under the sink.
These regulations adopted revised enforceable accessibility standards called the 2010 ada standards for accessible design 2010 standards or standards.
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The standards also address maneuvering space for wheelchair turning.
Measurement starts from the point where a person has 9 vertical clearance for their feet and 27 vertical clearance for their knees.