Measurement starts from the point where a person has 9 vertical clearance for their feet and 27 vertical clearance for their knees.
Ada sink clearance from wall.
The standards also address maneuvering space for wheelchair turning.
For wheelchair accessibility the center line of the toilet must be between 16 18 405 455 mm from the 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.
Ada regulations require a clear floor space in front of a bathroom sink or vanity of 30 inches deep from the sink to any other fixture or opposing wall and 48 inches wide from side to side.
Clearances are required at accessible elements fixtures and controls so that people with disabilities including those who use wheelchairs can approach and use them.
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.
This guide explains requirements in the ada standards for clear floor or ground space and turning space.
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.
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.
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.
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.
Sinks must have 30 x 48 760 x 1220 mm of access.
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.
The walls behind and surrounding the cabinetry are finished.
You also need a clear floor space and insulated pipes under the sink.