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STAIRS, DECK & PORCH CONSTRUCTION
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Stairway headroom & width codes & requirements: this document provides building code specifications, sketches, photographs, and examples of the stair passage width & stair overhead clearance or head room needed for indoor or outdoor stairs. How much space is needed over steps or stairs, and exactly where should those measurements be taken?
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Stairway overall height, width, and headroom requirements & codes are detailed here.
Our page top photo, courtesy Galow Homes and Eric Galow, shows where headroom clearance should be measured at a stairwell: stair overhead clearance is the vertical distance measured between the outer edge of the stair tread surface (close to the stair tread rounded nosing), and the under-side of the ceiling above.
Specifications for Stairway Overhead Clearance: Headroom
Re-stating this for clarity:
Stair way headroom should be 12' or less between floors - or restated, the total rise for a set of steps between floors should be less than or equal to twelve feet.
This means landings could be required if the total rise height of a stairway is more than 12 ft.
Sketch at left provided courtesy Carson Dunlop Associates.
Model & Example California Building Code Specifications for Stairway Headroom Requirements
Continue reading at STAIR PLATFORMS & LANDINGS, ENTRY or select a topic from the More Reading links shown below.
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