The Ontario Building Code | Capacity of Access to Exits
3.3.1.16. Capacity of Access to Exits
(1) The capacity of an access to exit shall be based on the occupant load of the portion of thefloor area served.
(2) In an access to exit the required width of ramps with a slope not more than 1 in 8, doorway ="http://thehandyforce.com/doors/" title ="Toronto Door installer">doorways, and corridors shall be based on not less than 6.1 mm per person.
(3) In an access to exit the required width of a ramp with a slope more than 1 in 8 shall be based on not less than 9.2 mm per person.
(4) In an access to exit from a floor area used or intended to be used for patients or residents in a Group B, Division 2 or Division 3 occupancy, the required width of corridors, doorways, and ramps shall be based on not less than 18.4 mm per person.
(5) The capacity of stairs in an access to exitshall conform to the requirements for stairs in Sentences 3.4.3.2.(1) to (3).
In Plain Language
This clause addresses egress requirements for mezzanines, ensuring occupants on a mezzanine level have access to an exit meeting the same general standards required for a full storey.
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.