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// CODE SNIPPET

R305.2.2 Minimum Stairway Headroom, Existing Buildings

Minnesota Residential Code 2015 > 3 Building Planning > R305 Ceiling Height > R305.2 Alterations to Existing Building Basements > R305.2.2 Minimum Stairway Headroom, Existing Buildings
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Alterations to existing basement stairways shall have a minimum headroom in all parts of the stairway not less than 6 feet 4 inches (1931 mm) measured vertically from the sloped line adjoining the tread nosing or from the floor surface of the landing or platform on that portion of the stairway.
Exception: Where the nosings of treads at the side of a flight extend under the edge of a floor opening through which the stair passes, the floor opening shall be allowed to project horizontally into the required headroom a maximum of 43/4 inches (121 mm).

Related Code Sections


R305.2.2 Building Planning, Minimum Stairway Headroom, Existing Buildings
Alterations to existing basement stairways shall have a minimum headroom in all parts of the stairway not less than 6 feet 4 inches (1931 mm ...
2020 Minnesota Residential Code > 3 Building Planning > R305 Ceiling Height > R305.2 Alterations to Existing Building Basements > R305.2.2 Minimum Stairway Headroom, Existing Buildings
R305.2.2 Building Planning, Minimum Stairway Headroom, Existing Buildings
Alterations to existing basement stairways shall have a minimum headroom in all parts of the stairway not less than 6 feet 4 inches (1931 mm ...
Minnesota Residential Code 2015 > 3 Building Planning > R305 Ceiling Height > R305.2 Alterations to Existing Building Basements > R305.2.2 Minimum Stairway Headroom, Existing Buildings
R311.7.2 Building Planning, Headroom
horizontally into the required headroom a maximum of 4 3 / 4 inches (121 mm). The minimum headroom for existing buildings shall be in accordance ...
2020 Minnesota Residential Code > 3 Building Planning > R311 Means of Egress > R311.7 Stairways > R311.7.2 Headroom
R311.7.2 Building Planning, Headroom
horizontally into the required headroom a maximum of 4 3 / 4 inches (121 mm). The minimum headroom for existing buildings shall be in accordance ...
Minnesota Residential Code 2015 > 3 Building Planning > R311 Means of Egress > R311.7 Stairways > R311.7.2 Headroom
1009.5 Means of Egress, Headroom
Stairways shall have a minimum headroom clearance of 80 inches (2032 mm) measured vertically from a line connecting the edge of the nosings . Such ...
Minnesota Building Code 2015 > 10 Means of Egress > 1009 Stairways > 1009.5 Headroom
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