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Note: This document or portion of document references a state or local code that aligns with the 2010 ADA Standards requirements.

11B-604.3.2 Overlap.

The required clearance around the water closet shall be permitted to overlap the water closet, associated grab bars, dispensers, sanitary napkin disposal units, coat hooks, shelves, accessible routes, clear floor space and clearances required at other fixtures, and the turning space. No other fixtures or obstructions shall be located within the required water closet clearance.

ETA Editor's Note

The Office of Statewide Health Planning and Development (OSHPD), which has jurisdiction over hospitals and long-term care facilities in California, has issued Code Application Notice CAN 2-11B, dated 9/9/14, which includes the following interpretation of Subsection 11B-604.3.2:

Showers are fixtures including a 30 inch x 60 inch clear receptor with a minimum/maximum slope of ¼ inch per foot to a drain (refer to CPC Section 408.5 and CBC Section 11B-608.9), and a threshold, between the shower receptor and the fixture clearance provided outside the shower (CBC Section 11B-608.2.2.1) with a maximum height of ½ inch (CBC Section 11B-608.7).  The required clearance around a water closet may overlap the clearance required outside the shower but not overlap the shower fixture threshold or receptor.

Exception:  In residential dwelling units, a lavatory complying with Section 11B-606 shall be permitted on the rear wall 18 inches (457 mm) minimum from the water closet centerline where the clearance at the water closet is 66 inches (1676 mm) minimum measured perpendicular from the rear wall.

[2010 ADAS] Advisory 604.3.2 Overlap.  When the door to the toilet room is placed directly in front of the water closet, the water closet cannot overlap the required maneuvering clearance for the door inside the room.
The clearance around a water closet is shown in plan view to be 60 inches wide minimum and 66 inches deep minimum with a lavatory permitted on the real wall if the distance between the lavatory nearest edge and the water closet center line is 18 inches minimum.

FIGURE 11B-604.3.2 (EXCEPTION)

OVERLAP OF WATER CLOSET CLEARANCE IN RESIDENTIAL DWELLING UNITS

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