The Ontario Building Code | Framing around Openings
9.24.3.5. Framing around openings="http://thehandyforce.com/windows/" title ="Window installer in Toronto">openings
(1) studs shall be doubled on each side of every opening where such openings="http://thehandyforce.com/windows/" title ="Window installer in Toronto">openings involve more than one stud space, and shall be tripled where the openings="http://thehandyforce.com/windows/" title ="Window installer in Toronto">openings in exterior walls exceed 2.4 m in width.
(2) studs described in Sentence (1) shall be fastened together by screws, crimping or welding to act as a single structural unit in resisting transverse loads.
In Plain Language
Framing around openings in a steel stud wall, such as for windows or doors, must meet the requirements set out in this article.
This is a plain-language summary of the 2012/2017 Ontario Building Code text above, for general understanding only and not a substitute for the Code. Always confirm current requirements against the 2024 edition (O.Reg. 163/24) or a qualified professional before construction.