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1991 ADA Standards for Accessible Design

Note: This document, portion of document or referenced document was published prior to the 2010 ADA Standards, and is still applicable.

4.24 Sinks.

4.24.1 General.

Sinks required to be accessible by 4.1 shall comply with 4.24.

4.24.2 Height.

Sinks shall be mounted with the counter or rim no higher than 34 in (865 mm) above the finish floor.

4.24.3 Knee Clearance.

Knee clearance that is at least 27 in (685 mm) high, 30 in (760 mm) wide, and 19 in (485 mm) deep shall be provided underneath sinks.

4.24.4 Depth.

Each sink shall be a maximum of 6‒1/2 in (165 mm) deep.

4.24.5 Clear Floor Space.

A clear floor space at least 30 in by 48 in (760 mm by 1220 mm) complying with 4.2.4 shall be provided in front of a sink to allow forward approach. The clear floor space shall be on an accessible route and shall extend a maximum of 19 in (485 mm) underneath the sink (see Fig. 32).

The minimum depth of the lavatory is 17 inches (430 mm). (4.19.3, 4.24.5)

Fig. 32 Clear Floor Space at Lavatories

4.24.6 Exposed Pipes and Surfaces.

Hot water and drain pipes exposed under sinks shall be insulated or otherwise configured so as to protect against contact. There shall be no sharp or abrasive surfaces under sinks.

4.24.7 Faucets.

Faucets shall comply with 4.27.4. Lever-operated, push-type, touch-type, or electronically controlled mechanisms are acceptable designs.


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