Code Library › Volume 1 › Section 9.23 — Wood Frame Construction
PART 9 — HOUSING AND SMALL BUILDINGSUpdated for the 2024 Ontario Building Code

9.23.13.2.Requirements for High Wind and Seismic Forces

(1) Except as provided in Article 9.23.13.1., this Article applies in locations where (a) the seismic spectral acceleration, Sa(0.2), is greater than 0.70 but not more than 1.8 and (i) the lowest exterior frame wall supports not more than 1 floor in buildings of heavy construction, or (See Note A-9.23.13.2.(1)(a)(i)) (ii) the lowest exterior frame wall supports not more than 2 floors in other types of construction, and (b) the 1-in-50 hourly wind pressure is less than 1.20 kPa. (2) Bracing to resist lateral loads shall be designed and constructed in accordance with (a) Articles 9.23.13.4. to 9.23.13.7., (b) Part 4, or (c) good engineering practice such as that provided in CWC 2014, “Engineering Guide for Wood Frame Construction.”
← Previous9.23.13.1. Requirements for Low to Moderate Wind and SeismiNext →9.23.13.3. Requirements for Extreme Wind and Seismic Forces

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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.