Transfer type shower compartments, which were previously not allowed as an accessible shower type in California, have been restored from the 2010 ADA Standards (with some amendments) under very limited scoping (see notes at Division 2).
11B-608.2.1 Transfer Type Shower Compartments. Transfer type shower compartments shall be 36 inches (914 mm) by 36 inches (914 mm) clear inside dimensions measured at the center points of opposing sides and shall have 36 inch (914 mm) wide minimum entry on the face of the shower compartment. Clearance of 36 inches (914 mm) wide minimum by 48 inches (1219 mm) long minimum measured from the control wall shall be provided. Transfer type shower compartments shall be permitted in transient lodging guest rooms, multi-bedroom housing units in undergraduate student housing and residential dwelling units; and shall not be permitted at other locations to meet the requirements of Section 11B-213.3.6.
Figure 11B-608.2.1 Transfer Type Shower Compartment Size and Clearance
11B-608.3.1 Transfer Type Shower Compartments. In transfer type compartments, grab bars shall be provided across the control wall and back wall to a point 18 inches (457 mm) from the control wall.
Figure 11B-608.3.1 Grab Bars for Transfer Type Showers
11B-608.4 Seats. A folding seat shall be provided in roll-in type showers and transfer type shower compartments. Seats shall comply with Section 11B-610.
Exception: In residential dwelling units, seats shall not be required in shower compartments provided that reinforcement has been installed in walls so as to permit the installation of seats complying with Section 11B-608.4.
11B-608.5 Controls. Controls, faucets, and shower spray units shall comply with Section 11B-309.4. Controls and faucets shall be of a single lever design allow the user to close and open the water supply.
11B-608.5.1 Transfer Type Shower Compartments. In transfer type shower compartments, the controls, faucets, and shower spray unit shall be installed on the side wall opposite the seat 38 inches (965 mm) minimum and 48 inches (1219 mm) maximum above the shower floor and shall be located on the control wall 15 inches (380 mm) maximum from the centerline of the seat toward the shower opening.
Figure 11B-608.5.1 Transfer Type Shower Compartment Control Location
11B-608.7 Thresholds. Thresholds in roll-in type shower compartments shall be 1/2 inch (12.7 mm) high maximum in accordance with Section 11B-303. In transfer type shower compartments, thresholds 1/2 inch (12.7 mm) high maximum shall be beveled, rounded, or vertical.
Exception: Reserved. A threshold 2 inches (51 mm) high maximum shall be permitted in transfer type shower compartments in existing facilities where provision of a 1/2 inch (12.7 mm) high threshold would disturb the structural reinforcement of the floor slab.
11B-610.3 Shower compartment seats. A seat in a standard roll-in shower compartment shall be a folding type, shall be installed on the side wall adjacent to the controls, and shall extend from the back wall to a point within 3 inches (76 mm) of the compartment entry. A seat in an alternate roll-in type shower compartment shall be a folding type, shall be installed on the front wall opposite the back wall, and shall extend form the adjacent side wall to a point within 3 inches (76 mm) of the compartment entry. In transfer-type showers, the seat shall extend from the back wall to a point within 3 inches (76 mm) of the compartment entry. The top of the seat shall be 17 inches (432 mm) minimum and 19 inches (483 mm) maximum above the bathroom finish floor. When folded, the seat shall extend 6 inches (152 mm) maximum from the mounting wall. Seats shall comply with Section 11B-610.3.1 or 11B-610.3.2.