The Ontario Building Code | Group C, Any Height, Any Area, Sprinklered
18.104.22.168. Group C, Any Height, Any Area, Sprinklered
(1) Except as permitted by Articles 22.214.171.124. to 126.96.36.199., a building classified as Group C shall conform to Sentence (2).
Note: On July 1, 2017, Sentence 188.8.131.52.(1) of Division B of the Regulation is amended by adding "other than a retirement home" after "Group C". (See: O. Reg. 139/17, s. 18)
(2) Except as permitted by Article 184.108.40.206., the buildingreferred to in Sentence (1) shall be of noncombustible construction, and,
(a) except as permitted by Sentence 220.127.116.11.(1), the building shall be sprinklered,
(b) except as permitted by Sentence (3), floor assemblies shall be fire separationswith a fire-resistance rating not less than 2 h,
(c) mezzanines shall have a fire-resistance rating not less than 1 h, and
(d) loadbearing walls, columns and arches shall have a fire-resistance rating not less than that required for the supported assembly.
(3) In a building that contains dwelling units that have more than 1 storey, subject to the requirements of Sentence 18.104.22.168.(3), the floor assemblies, including floors over basements, which are entirely contained within these dwelling units, shall have a fire-resistance rating not less than 1 h but need not be constructed as fire separations.