The Ontario Building Code | General
3.14.2.2. General
(1) Air-supported structures shall not be used for Groups B, C or Group F, Division 1 major occupancies or for classrooms.
(2) Except where no fire separation is required between major occupancies, air-supported structures shall contain not more than one major occupancy.
(3) Except as provided in Sentence (5), air-supported structures are exempt from complying with Articles 3.2.2.20. to 3.2.2.83., except for maximum building size.
(4) Air-supported structures may be designed with interior walls, mezzanines, or similar construction.
(5) interior construction contained within air-supported structures must meet the construction requirements of Articles 3.2.2.20. to 3.2.2.83.
In Plain Language
Air-supported structures can't be used for Group B, C, or high-hazard industrial occupancies or classrooms, and except where no fire separation is required between major occupancies, they can contain only one major occupancy.
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.