Construction codes of Ontario

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Wall Sheathing Thickness, Rating and Material Standards

Wall Sheathing Thickness, Rating and Material Standards (1) Where wall sheathing is required for the purpose of complying with this Section, it shall conform to Table 9.23.16.2.A. or Table 9.23.16.2.B. Article 9.23.16.2 Ontario Regulation 332/12 Building Code, O. Reg. 332/12: BUILDING CODE (ontario.ca) © Queen’s Printer for Ontario, 2021.

Wall Stud Size and Spacing

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 […]

Wall Studs

Wall Studs (1) Wall studs shall not be notched, drilled or otherwise damaged so that the undamaged portion of the stud is less than two-thirds the depth of the stud if the stud is loadbearing or 40 mm if the stud is non-loadbearing, unless the weakened studs are suitably reinforced. Article 9.23.5.3. Ontario Regulation 332/12 Building […]

Walls Above Grade

Walls Above Grade Cladding such as wood siding, stucco or brick veneer provides a first plane of protection against precipitation ingress in above-grade wall assemblies. In geographic locations where the probability of wetting due to precipitation is high and the drying potential of the walls is low, a capillary break (an air space) must be […]

Walls Above Grade Air Barrier

Walls Above Grade Air Barrier When the air barrier is on the interior of the wall framing, it can be easily sealed to the polyethylene attached to the underside of the roof framing. However, it is difficult to install a polyethylene air barrier where the floor joists meet an exterior wall because the joists interrupt […]

Wood Column Materials

Wood Column Materials (1) Wood columns shall be either solid, glue-laminated or built-up. (2) Built-up columns shall consist of not less than 38 mm thick full-length members, (a) bolted together with not less than 9.52 mm diam bolts spaced not more than 450 mm o.c., or (b) nailed together with not less than 76 […]

Wood Column Sizes

Wood Column Sizes, (1) The width or diameter of a wood column shall be not less than the width of the supported member. (2) Except as provided in Article 9.35.4.2., columns shall be not less than 184 mm for round columns and 140 mm by 140 mm for rectangular columns, unless calculations are provided to show that […]