The Ontario Building Code | Exit Width
9.9.3.2. Exit Width
(1) Except for doors and corridors, the width of every exitfacility shall be not less than 900 mm.
In Plain Language
Exits must provide a minimum width set out in this article, sized to let the building's occupant load pass through within a safe time during an emergency evacuation.
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.