Div. B › Part 3 › 3.1 › 3.1.7 — Fire-Resistance Ratings

3.1.7.4 — Minimum Fire-Resistance Rating

Copied! ▲ ▼
(1) The use of materials or assemblies having a greater fire-resistance rating than required shall impose no obligation to exceed in whole or in part the minimum fire-resistance ratings required by this Part.
Disclaimer. This site provides general access to Ontario Building Code information for reference only. It is not an official source and may omit or summarize content. Always verify requirements with the current OBC and your Authority Having Jurisdiction (AHJ). The Ontario Building Code is Crown copyright © King’s Printer for Ontario. Terms of Use.