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Fire blocking or fire stopping at stairwells: codes / specification requirements for fire blocking at stairs and stairways: this document provides building code specifications, sketches, photographs, and examples of fire stopping or fire spread control for stairs and stairways.
We also include references to key documents on building codes and stair and railing safety.
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Fire stopping for stairs is required to slow the spread of building fires between floors and to assist in emergency exit.
Sketch at left courtesy of Carson Dunlop Associates, illustrates where fireblocking must be installed.
For an interior stairway, 1/2" drywall is fastened to the stair underside or sidewalls above (if present) or (below) the stairs.
These improvements are not expected to make the building fire-proof. But especially because stairs form a natural building fire spread pathway fire stopping is required by building codes to slow the spread of fire that might follow the under-side of a stairway from a lower floor to an upper one.
Also see our page top photo. There you will notice that the under-side and sidewall of stairs passing through a garage were covered with fire-rated drywall on both the stair side and underside. Photo courtesy Galow Homes.
Model & Example California Building Code Specifications for Fire Blocking & Fire Stopping at Stairways
Example: California Building Code Stairways & Landings Specifications - stairway fire blocking / fire stopping
Continue reading at STAIRS, RAILINGS, LANDINGS, RAMPS - INSPECTIONS, CODES or select a topic from the More Reading links shown below.
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