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• <br /> 1AyBuiLdingermit.com <br /> a service of eCityGov.net Construction Tip Sheet 01 <br /> r. <br /> //',/, <br /> Overhead Obstruction <br /> / , / The minimum headroom of <br /> // / a stair is 6'-8"(measured <br /> %/' vertically from the sloped <br /> / plane adjoining the tread <br /> nosing). R311.7.2 <br /> No more than 12'-7" <br /> : r:g00rhes betwe fl <br /> / els or s <br /> R311.7.3 <br /> Figure 3: Headroom Clearance Requirements <br /> January 22,2021 MyBuildingPermit.com I Basic Stairs 3 <br /> eCityGov.net <br /> 2005•`s eCkyGovAtliance <br />