Construction codes of Ontario

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Deflections

(1) The maximum deflection of structural members shall conform to Table 9.4.3.1. (2) Dead loads need not be considered in computing deflections referred to in Sentence (1). Article 9.4.3.1 Ontario Regulation 332/12 Building Code, Information published by oncodes.ca for educational purposes only.

Edge Support Panel-Type Subflooring

Edge Support Panel-Type Subflooring (1) Where the edges of panel-type subflooring are required to be supported, such support shall consist of tongue-and-groove panel edges or not less than 38 mm by 38 mm blocking securely nailed between framing members. Article 9.23.14.3. Ontario Regulation 332/12 Building Code, O. Reg. 332/12: BUILDING CODE (ontario.ca) © Queen’s Printer […]

End Bearing for Joists

End Bearing for Joists (1) Except when supported on ribbon boards, floor joists shall have not less than 38 mm length of end bearing. (2) Ribbon boards referred to in Sentence (1) shall be not less than 19 mm by 89 mm lumber let into the studs. Article 9.23.9.1. Ontario Regulation 332/12 Building Code, Information published […]

Fastening for Sheathing or Subflooring

Fastening for Sheathing or Subflooring (1) Except as required by Sentence (5), fastening of sheathing and subflooring shall conform to Table 9.23.3.5. (2) Staples shall not be less than 1.6 mm in diameter or thickness, with not less than a 9.5 mm crown driven with the crown parallel to framing. (3) Roofing nails for the attachment of fibreboard […]

Fastening Panel-type underlay

Fastening Panel-type underlay (1) Panel-type underlay shall be fastened to the subfloor with staples, annular grooved flooring nails or spiral nails, spaced not more than 150 mm o.c. along the edges and 200 mm o.c. both ways at other locations. (2) Nails for panel-type underlay shall be not less than 19 mm long for 6 mm thick […]

Finish Quality Flooring

Finish Quality Flooring (1) Finished flooring shall have a surface that is smooth, even and free from roughness or open defects. Article 9.30.1.4 Ontario Regulation 332/12 Building Code, Information published by oncodes.ca for educational purposes only.

Fire Block Materials

(1) Except as permitted by Sentences (2) to (4) and (7) fire blocks shall remain in place and prevent the passage of flames for not less than 15 min when subjected to the standard fire exposure in CAN/ULC-S101, “Fire Endurance Tests of Building Construction and Materials”. (2) Gypsum board not less than 12.7 mm thick and sheet […]