Code Library › Volume 1 › Section 3.3 — Safety Within Floor Areas (See Note A-3.3.)
PART 3 — FIRE PROTECTION, OCCUPANT SAFETY AND ACCESSIBILITYUpdated for the 2024 Ontario Building Code

3.3.1.26.Welding and Cutting

(1) Except as provided in Sentence (2), welding and cutting operations shall be carried out in a room (a) separated from the remainder of the building by a fire separation having a fire-resistance rating not less than 1 h, or (b) protected by an automatic fire extinguishing system. (2) Sentence (1) shall not apply to industrial occupancies where the welding and cutting operations do not present a fire or explosion hazard to adjacent areas.
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Code text is reproduced for reference from the Ontario Building Code (O. Reg. 163/24, 2024 Building Code Compendium). This page is provided for general information and is not an official copy. Always verify requirements against the official Ontario Building Code and confirm with your local building department.