Construction codes of Ontario

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Wall Sheathing Thickness and Specifications Table

Wall Sheathing Thickness and Specifications Table Table 9.23.16.2.A.Wall Sheathing Thickness and Specifications Forming Part of Sentence 9.23.16.2.(1) Notes to Table 9.23.16.2.A.: (1) See also Sentences 9.27.5.1.(2) and (3). (2) The flame-spread rating of gypsum board shall be determined in accordance with CAN/ULC-S102, “Test for Surface Burning Characteristics of Building Materials and Assemblies”. Table 9.23.16.2A Ontario Regulation 332/12 […]

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 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 Frame Roof Systems

Wood Frame Roof Systems (1) Except as permitted in Sentence (2), roof systems of wood frame construction shall be tied to exterior masonry walls by not less than 12.7 mm diam anchor bolts, (a) spaced not more than 2.4 m apart, (b) embedded not less that 90 mm into the masonry, and (c) […]

Wood Roof Shingles Grade

Wood Roof Shingles Grade (1) Western cedar shingles shall be not less than No. 2 grade. (2) Eastern white cedar shingles shall be not less than B (clear) grade. Article 9.26.9.2. Ontario Regulation 332/12 Building Code, Information published by oncodes.ca for educational purposes only. Wood Shingles Note : Western red and white cedar are the principal […]

Wood Roof Trusses

Wood Roof Trusses (1) Roof trusses that are not designed in accordance with Part 4 shall, (a) be capable of supporting a total ceiling load (dead load plus live load) of 0.35 kPa plus two and two-thirds times the specified live roof load for 24 h, and (b) not exceed the deflections shown in […]