The Ontario Building Code | Group A, Division 2, up to 6 Storeys, Any Area, Sprinklered
3.2.2.24. Group A, Division 2, up to 6 Storeys, Any Area, Sprinklered
(1) A building classified as Group A, Division 2, that is not limited by building area, is permitted to conform to Sentence (2) provided,
(a) except as permitted by Sentence 3.2.2.7.(1), the building is sprinklered, and
(b) it is not more than 6 storeys in building height.
(2) Except as permitted by Article 3.2.2.16., the buildingreferred to in Sentence (1) shall be of noncombustible construction, and,
(a) floor assemblies shall be fire separations with a fire-resistance rating not less than 1 h,
(b) mezzaninesshall have a fire-resistance rating not less than 1 h, and
(c) all loadbearingwalls, columns and arches shall have a fire-resistance rating not less than that required for the supported assembly.
In Plain Language
This article sets one of the specific size-and-construction packages available for a Group A, Division 2 buildings building: up to 6 storeys with unlimited area, provided the building is sprinklered and noncombustible, with 1-hour floor assemblies and mezzanines. Designers can choose whichever of the several packages in this Subsection best fits the building being planned, trading height and area against construction type, sprinklering, and fire-resistance rating requirements.
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.