Code Library › Volume 1 › Section 3.2 — Building Fire Safety
PART 3 — FIRE PROTECTION, OCCUPANT SAFETY AND ACCESSIBILITYUpdated for the 2024 Ontario Building Code

3.2.3.12.Area Increase for Unprotected Openings

(1) Except as required by Sentence 3.2.3.7.(5), the maximum area of unprotected openings in any exposing building face of a building that is not sprinklered is permitted to be doubled if the openings are glazed with (a) glass block conforming to the requirements of Article 3.1.8.16., or (b) wired glass assemblies conforming to MMAH Supplementary Standard SB-2, “Fire Performance Ratings.” (See Note A-3.2.3.12.(1)) (See A-2.3.15. of SB-2)
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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.