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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. [S.H. 4.16.2]

EXCEPTION: In residential dwelling units, a lavatory complying with 606 shall be permitted on the rear wall 18 inches (455 mm) minimum from the water closet centerline where the clearance at the water closet is 66 inches (1675 mm) minimum measured perpendicular from the rear wall.

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 (1525 mm) wide minimum and 66 inches (1675 mm) 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 (455 mm) minimum.

Figure 604.3.2 (Exception) Overlap of Water Closet Clearance in Residential Dwelling Units


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