The Ontario Building Code | Corbelling for Masonry Veneer
9.20.12.3. Corbelling for masonry Veneer
(1) masonry veneer resting on a bearing support shall not project more than 25 mm beyond the supporting base where the veneer is at least 90 mm thick, and 12 mm beyond the supporting base where the veneer is less than 90 mm thick.
(2) In the case of rough stone veneer, the projection, measured as the average projection of the stone units, shall not exceed one-third the bed width beyond the supporting base.
9.20.13. Control of Rain water Penetration
In Plain Language
Corbelling for masonry veneer has its own specific requirements set out in this article, since corbelled veneer needs support suited to its non-structural, decorative role.
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.