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United States · ADA · Illustrated standards guidance

Toilet rooms: fixture and transfer clearances

Toilet-room layouts, water-closet transfer spaces, grab bars, lavatories and accessible toilet compartments.

AccessibilityAnthropometry & ergonomics
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Source wording and page order preserved. Drawings and table layouts remain available in the original PDF.

Chapter 6: Plumbing Elements and Facilities Toilet Rooms Water Closets in Residential Dwelling Units In residential dwelling units required to be mobility accessible, at least one bathroom must comply (§809.4). Accessible water closets in dwelling units are permitted several exceptions that allow some features, such as grab bars and knee and toe space below lavatories, to be provided after construction as needed if certain conditions are met. In addition, lavatories can overlap a portion of the water closet clearance if additional clearance depth is provided. Exceptions for Water Closets in Dwelling Units Note: All other applicable requirements, including clearances and turning space, must be met. 19 ”91–”51 Grab Bars Grab bars can be installed after construction if walls are properly reinforced/ blocked (§604.5, Ex. 2). Lavatory Knee & Toe Space Cabinetry is permitted under lavatories if: it can be taken out without removal or replacement of the fixture, the finish floor extends beneath it, and the walls behind and surrounding the cabinetry are finished (§606.2, Ex. 3). Toilet Seat Height A lower toilet seat height is permitted (§604.4, Ex. 2). 66” A compliant lavatory is permitted on the rear min wall 18” min. from the water closet centerline if 18” min the clearance at the water closet is at least 66” (instead of 56”) deep (§604.3.2, Ex.). C L

Edition and local adoption determine which requirements apply. Use the publisher’s document for the complete clauses, diagrams and amendments.