The Ontario Building Code | Public Corridor Separations
18.104.22.168. 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, 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, detentionor residential occupancy.
(a) except as required by Sentences 22.214.171.124.(9) and 126.96.36.199.(1) and notwithstanding Sentences 188.8.131.52.(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 suiteprovided the public corridor complies with Sentence 184.108.40.206.(6) and Clause 220.127.116.11.(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 storeyby a fire separation that has a fire-resistance rating not less than that required between the public corridor and the remainder of the storey.
(5) The sprinkler system in Sentences (3) and (4) shall be electrically supervised in conformance with Sentence 18.104.22.168.(3) and, upon operation, shall cause a signal to be transmitted to the fire department in conformance with Sentence 22.214.171.124.(4) when the corridor serves a Group E or Group F, Division 1 or 2 occupancy.