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Technical Note: Stairwell Openings in APA PRI I-Joist Floors
Z705
Technical Note: Stairwell Openings in APA PRI I-Joist Floors

Describes how to detail an unsupported stairwell opening in a residential floor. Simplifies the selection of trimmers and headers, provides guidance on the appropriate detailing for their use, and quantifies hanger capacity requirements for I-joist-to-header and header-to-trimmer intersections. Revised September 2012.

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