PART 3 — FIRE PROTECTION, OCCUPANT SAFETY AND ACCESSIBILITYUpdated for the 2024 Ontario Building Code
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3.3.1.4.Public Corridor Separations
(1) Except as otherwise required by this Part or as permitted by Sentence (4), a public corridor shall be separated from
the remainder of the storey by a fire separation.
(2) Except as permitted by Sentence (3) and Clauses (4)(a) and (b), the fire separation between a public corridor and
the remainder of the storey shall have a fire-resistance rating not less than 45 min.
(3) If a storey is sprinklered throughout, no fire-resistance rating is required for a fire separation between a public
corridor and the remainder of the storey, provided the corridor does not serve a care, care and treatment, detention or
residential occupancy. (See Note A-3.1.8.1.(1)(b))
(4) No fire separation is required in a sprinklered floor area between a public corridor and
(a) except as required by Sentences 3.3.3.5.(9) and 3.3.4.2.(1) and notwithstanding Sentence 3.4.2.4.(2), the remainder
of a storey, provided the travel distance from any part of the floor area to an exit is not more than 45 m.,
(b) a room or suite, provided the public corridor complies with Sentence 3.3.1.9.(4) and Clause 3.4.2.5.(1)(d), or
(c) a space containing plumbing fixtures required by Subsection 3.7.4. provided the space and the public corridor are
separated from the remainder of the storey by a fire separation having a fire-resistance rating not less than that
required between the public corridor and the remainder of the storey.
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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.