Code Library › Volume 1 › Section 3.2 — Building Fire Safety
PART 3 — FIRE PROTECTION, OCCUPANT SAFETY AND ACCESSIBILITYUpdated for the 2024 Ontario Building Code

3.2.2.21.Group A, Division 1, One Storey, Limited Area, Sprinklered

(1) A building classified as Group A, Division 1 is permitted to conform to Sentence (2) provided (a) except as permitted by Sentences 3.2.2.7.(1) and 3.2.2.18.(2), the building is sprinklered throughout, (b) it is not more than 1 storey in building height, (c) it has less than 40% of the area of the building as 2 storeys for the purpose of (i) development of productions including preparation of scenery and costumes and rehearsal of performers, (ii) organization of performers, scenery and sound equipment, (iii) preparation by performers for a performance, (iv) managerial functions, or (v) toilets, rest rooms and similar public facilities, (d) it has no occupancy above or below the auditorium other than one which serves it or is dependent on it, (e) it is not more than 600 m2 in building area, and (f) the occupant load is not more than 600. (2) The building referred to in Sentence (1) is permitted to be of heavy timber construction or noncombustible construction used singly or in combination, and (a) floor assemblies shall be fire separations (i) with a fire-resistance rating not less than 45 min, or (ii) of heavy timber construction, and (b) loadbearing walls, columns and arches shall (i) have a fire-resistance rating not less than that required for the supported assembly, or (ii) be of heavy timber construction.
← Previous3.2.2.20. Group A, Division 1, Any Height, Any Area, SprinNext →3.2.2.22. Group A, Division 1, One Storey, Sprinklered

Common questions about this part of the code

When is noncombustible construction required under the Ontario Building Code?When are automatic sprinklers required in a building in Ontario?What are the fire department access route requirements under the Ontario Building Code?When is a fire alarm system required in a building in Ontario?

Understand this provision in seconds

BUILDAiD Assist explains any article of the building code in plain English — with exact citations, exceptions and related requirements.

Try BUILDAiD Beta

Code text is reproduced for reference from the Ontario Building Code (O. Reg. 163/24, 2024 Building Code Compendium). This page is provided for general information and is not an official copy. Always verify requirements against the official Ontario Building Code and confirm with your local building department.