11B-903 Benches — 2025 California Building Code
California Building Code (Title 24, Part 2) · 2025 edition · updated 2026-10-19 · California
CBSC: official editions, supplements and errata
Italicized text is a California amendment to the model code, as printed in the official publication.
Cite as: 2025 California Building Code (Title 24, Part 2) § 11B-903 · Effective January 1, 2026 · Official source: Building Standards Commission
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.
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 2 1/2 inches (64 mm) maximum from the rear edge of the seat measured horizontally.
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.
FIGURE 11B- 903.4—BENCH BACK SUPPORT
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.
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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