Div. B › Part 3 › 3.3 › 3.3.1 — All Floor Areas

3.3.1.24 — Welding and Cutting

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(1) Except as provided in Sentence (2), welding and cutting operations shall be located 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) does not apply to an industrial occupancy where the welding and cutting operations do not present a fire or explosion hazard to adjacent areas.

OBC Definitions

Defined terms on this page

fire separation

means a construction assembly that acts as a barrier against the spread of fire.

fire-resistance rating

means the time in minutes or hours that a material or assembly of materials will withstand the passage of flame and the transmission of heat when exposed to fire under specified conditions of test and performance criteria, or as determined by extension or interpretation of information derived from that test and performance as prescribed in this Code.

industrial occupancy

means the occupancy or use of a building or part of a building for the assembling, fabricating, manufacturing, processing, repairing or storing of goods or materials.

occupancy

means the use or intended use of a building or part of a building for the shelter or support of persons, animals or property.

building

(a) a structure occupying an area greater than ten square metres consisting of a wall, roof and floor or any of them or a structural system serving the function thereof including all plumbing, works, fixtures and service systems appurtenant thereto,
(b) a structure occupying an area of ten square metres or less that contains plumbing, including the plumbing appurtenant thereto,
(c) plumbing not located in a structure,
(c.1) a sewage system, or
(d) structures designated in the building code; Act

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