The Ontario Building Code | Group F, Division 3, Storage Garages up to 22 m High
3.2.2.83. Group F, Division 3, Storage garages up to 22 m High
(1) A building used as a storage garage with all storeysconstructed as open-air storeys and having no otheroccupancy above it is permitted to have its floor, wall, ceiling and roof assemblies constructed without a fire-resistance rating provided it is,
(a) of noncombustible construction,
(b) not more than 22 m high, measured between grade and the ceiling level of the top storey,
(c) not more than 10 000 m2in building area, and
(d) designed so that every portion of each floor area is within 60 m of an exterior wall opening.
3.2.3. Spatial Separation and Exposure Protection
In Plain Language
A storage garage with every storey built as an open-air storey and no other occupancy above it can skip fire-resistance ratings on its floor, wall, ceiling, and roof assemblies, provided it's noncombustible, no more than 22 m high, no more than 10,000 m² in area, and designed so every floor point is within 60 m of an exterior wall opening.
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.