All areas of new or renovated commercial buildings are required to be accessible to those in wheelchairs, to avoid discrimination against people with disabilities, according to the American Disabilities Act (ADA). The required dimensions for sinks include its height, depth, knee clearance (if a person in a wheelchair had to sit in front of the sink), clear floor space (to maneuver or turn a wheel chair around in a space), pipes and faucets.
Sinks should be installed with the counter or rim at a maximum height of 34 inches above the final flooring material.
All sinks should not have a depth greater than 6 1/2 inches.
Knee clearance underneath sinks should have a minimum of 27 inches in height, 30 inches wide, and 19 inches deep.
Clear Floor Space
There should be a clear floor space (with no physical obstructions) in front of the sink to allow a forward approach. This space should be 30 inches by 48 inches. It should be on a route easily accessible by a wheelchair and must extend a maximum of 19 inches underneath the sink.
Exposed hot water or drain pipes should be insulated or protected to prevent contact. The area under the sink should be free of sharp or abrasive surfaces.
Faucets should be equipped with a push-type, lever-operated, touch-type or electronically controlled mechanism