Wall Stud Size and Spacing

(1)  Except as provided in Sentence (2), the size and spacing of studs shall conform to Table 9.23.10.1.

(2)  Studs for walls not listed in Table 9.23.10.1. and supporting roof loads shall conform to Tables A-30 to A-33, provided,

    (a)   the studs are clad with not less than 9.5 mm thick plywood, OSB or waferboard sheathing on the exterior face, and not less than 12.5 mm gypsum board on the interior face,

    (b)   solid bridging is provided at not more than 1.2 m o.c,

    (c)   the studs are fastened to the top and bottom plates with no fewer than three 82 mm toe-nails,

    (d)   the double top plates are fastened together with not less than 76 mm nails spaced not more than 200 mm o.c,

    (e)   roof framing members spaced not more than 610 mm are fastened to the top plates with no fewer than four 82 mm toe-nails, and

    (f)   the bottom plate is fastened to the floor joists, blocking or rim joist with not less than 82 mm nails spaced not more than 200 mm o.c.

Article 9.23.10.1. Ontario Regulation 332/12 Building Code,   Information published by oncodes.ca for educational purposes only.