Yankee Chronicler
REGISTERED
"Shelves" (A117.1 604.3.3 / ADAS 604.3.2). I think this boils down to "do you consider a 'floor-mounted' unit like what's in the photo a 'shelf' or something else?".

Somewhere I've seen it explained that s shelf within the clear space for a water closet allows the use of toe and knee vertical space for turning. Beyond that, though, a single occupant toilet room is designed for use by any wheelchair occupant. It has to allow for a front transfer or a side transfer. In a side transfer, the occupant backs the wheelchair into the space between the water closet and the lavatory. For a front transfer, the wheelchair user rolls up to the front of the WC, facing it, then stands up and pivots around to sit on the WC. There can't be anything in the space -- including hung on the wall -- that the wheelchair can't fit under.