2022 California Standards for Accessible Design Guide (effective January 1, 2023)
11B-903 Benches
11B-903.1 General.
Benches shall comply with Section 11B-903.
11B-903.2 Clear floor or ground space.
Clear floor or ground space complying with Section 11B-305 shall be provided and shall be positioned at the end of the bench seat and parallel to the short axis of the bench.
11B-903.3 Size.
Benches shall have seats that are 48 inches (1219 mm) long minimum and 20 inches (508 mm) deep minimum and 24 inches (610 mm) deep maximum.
[2010 ADA Standards] 903.3 Size. Benches shall have seats that are 42 inches (1065 mm) long minimum and 20 inches (510 mm) deep minimum and 24 inches (610 mm) deep maximum.
11B-903.4 Back support.
The bench shall provide for back support or shall be affixed to a wall along its long dimension. Back support shall be 48 inches (1219 mm) long minimum and shall extend from a point 2 inches (51 mm) maximum above the seat surface to a point 18 inches (457 mm) minimum above the seat surface. Back support shall be 2½ inches (64 mm) maximum from the rear edge of the seat measured horizontally.
[2010 ADA Standards] 903.4 Back Support. The bench shall provide for back support or shall be affixed to a wall. Back support shall be 42 inches (1065 mm) long minimum and shall extend from a point 2 inches (51 mm) maximum above the seat surface to a point 18 inches (455 mm) minimum above the seat surface. Back support shall be 2 1/2 inches maximum from the rear edge of the seat measured horizontally.
(a)
(b)
FIGURE 11B-903.4 BENCH BACK SUPPORT
11B-903.5 Height.
The top of the bench seat surface shall be 17 inches (432 mm) minimum and 19 inches (483 mm) maximum above the finish floor or ground.
11B-903.6 Structural strength.
Benches shall be affixed to the wall or floor. Allowable stresses shall not be exceeded for materials used when a vertical or horizontal force of 250 pounds (1112 N) is applied at any point on the seat, fastener, mounting device, or supporting structure.
[2010 ADA Standards] 903.6 Structural Strength. Allowable stresses shall not be exceeded for materials used when a vertical or horizontal force of 250 pounds (1112 N) is applied at any point on the seat, fastener, mounting device, or supporting structure.
11B-903.7 Wet locations.
Where installed in wet locations, the surface of the seat shall be slip resistant and shall not accumulate water.
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