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Landings serving existing basement stairs being altered or modified shall not be reduced below the existing stairway landing depth and width. Existing basement stairs not otherwise being altered shall be permitted to maintain the current landing depth and width.

Related Code Sections

1011.6 Means of Egress, Stairway Landings
There shall be a floor or landing at the top and bottom of each stairway. The width of landings shall be not less than the width of stairways served ...
AJ501.8.3 Existing Building and Structures, Stair Landing
Landings serving existing basement stairs being altered or modified shall not be reduced below the existing stairway landing depth and width ...
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Glazing adjacent to the landing at the bottom of a stairway where the glazing is less than 60 inches (1524 mm) above the landing and within a 60-inch ...
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Glazing adjacent to the landing at the bottom of a stairway where the glazing is less than 36 inches (914 mm) above the landing and within a 60-inch ...
R311.7.6 Building Planning, Landings for Stairways
There shall be a floor or landing at the top and bottom of each stairway. The width perpendicular to the direction of travel shall be not less than ...