Accessible Shower Compartment Types (2010 ADA Standards 608.2)

Three types, three geometries, and picking the wrong one puts a remodel a foot short in the wrong direction.

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TRANSFER is 36 x 36 in -- the only one that fits a standard alcove -- but its OUTSIDE clearance is 36 x 48 from the control wall, deeper than the stall itself. STANDARD ROLL-IN is 30 x 60 with a 60 in entry, meaning the whole long side is open, which a curb or jamb defeats. ALTERNATE ROLL-IN is 36 x 60 with a 36 in entry on one long side. It also reports which types a compartment WOULD satisfy as built, because a stall that fails one often meets another.

transfer type: 36 x 36 in clear inside, 36 in wide entry, 36 x 48 in clearance from the control wall. Standard roll-in: 30 in wide by 60 in deep clear inside, 60 in wide entry, 30 x 60 in clearance adjacent to the open face. Alternate roll-in: 36 in wide by 60 in deep clear inside, 36 in wide entry at one end of the long side.

2010 ADA Standards for Accessible Design, 608.2.1, 608.2.2, and 608.2.3. A US federal standard in the public domain, quoted directly.

The 2010 ADA Standards are published in full at no cost at ada.gov and by the US Access Board.

Estimate. AHJ and licensed professional govern.

Field names used by the API: shower_type, width_in, depth_in, entry_width_in, clearance_width_in, clearance_length_in, required_width_in, required_entry_in, entry_deficit_in, inside_area_sf, total_footprint_sf

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