Structural · S-XRP3Z

Cold-Formed Steel Stud and Joist Punchout Limits

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Cold-formed steel stud and joist profiles detail permissible web punchout dimensions and spacing rules for service penetrations. Allowable round or slotted penetrations adhere to strict minimum and maximum dimensions from member ends and centerlines, with maximum punchout heights relative to web depths. Infill repairs at oversized or cut penetrations consist of a solid steel plate, C-section, or track matching the parent stud thickness, secured with screws spaced one inch on center typically. Joist web bearing conditions specify minimum end distances from supports to centerline of punchouts.

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