Code Library › Volume 1 › Section 9.4 — Structural Requirements
PART 9 — HOUSING AND SMALL BUILDINGSUpdated for the 2024 Ontario Building Code

9.4.4.4.Soil Movement

(1) Where a foundation is located in an area where soil movement caused by changes in soil moisture content, freezing, or chemical-microbiological oxidation is known to occur to the extent that it will damage a building, measures shall be taken to preclude such movement or to reduce the effects on the building so that the building’s stability and the performance of assemblies will not be adversely affected. (See Note A-9.4.4.4.(1))
← Previous9.4.4.3. High Water TableNext →9.4.4.6. Walls Supporting Drained Earth (See Note A-9.4.4

Common questions about this part of the code

When can you use Part 9 span tables instead of an engineer in Ontario?What design loads apply to houses under Part 9 in Ontario?What are the basic foundation design rules for houses in Ontario?

Understand this provision in seconds

BUILDAiD Assist explains any article of the building code in plain English — with exact citations, exceptions and related requirements.

Try BUILDAiD Beta

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.