The Ontario Building Code | Sheet Metal Thickness
9.3.3.1. Sheet Metal Thickness
(1) Minimum thicknesses for sheet metal material required in this Part refer to the actual minimum base metal thicknesses measured at any point of the material, and in the case of galvanized steel described in Sentence 9.3.3.2.(1), include the thickness of the galvanizing coating unless otherwise indicated.
In Plain Language
Sheet metal used in construction must meet the minimum thickness requirements set out in this article, ensuring it has adequate strength and durability for its intended use.
This is a plain-language summary of the 2012/2017 Ontario Building Code text above, for general understanding only and not a substitute for the Code. Always confirm current requirements against the 2024 edition (O.Reg. 163/24) or a qualified professional before construction.