3.2.2.50.Group C, up to 4 Storeys, Noncombustible Construction

(1) A building classified as Group C, other than a retirement home, is permitted to conform to Sentence (2) provided (a) it is not more than (i) 3 storeys in building height, or (ii) 4 storeys in building height provided there is not more than one dwelling unit above another dwelling unit, and vertical fire separations of adjacent dwelling units conform to Sentence (4), and (b) it has a building area not more than the value in Table 3.2.2.50. Table 3.2.2.50. Maximum Building Area, Group C, up to 4 Storeys Forming Part of Sentence 3.2.2.50.(1) Maximum Area, m2 No. of Storeys Facing 1 Street Facing 2 Streets Facing 3 Streets 1 not limited not limited not limited 2 6 000 not limited not limited 3 4 000 5 000 6 000 4 3 000 3 750 4 500 (2) The building referred to in Sentence (1) shall be of noncombustible construction, and (a) except as permitted by Sentence (3), floor assemblies shall be fire separations with a fire-resistance rating not less than 1 h, (b) mezzanines shall have a fire-resistance rating not less than 1 h, (c) roof assemblies 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 one storey, subject to the requirements of Sentence 3.3.4.2.(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. (4) The dwelling units described in Subclause (1)(a)(ii) shall be separated by continuous vertical fire separations that extend through all storeys and service spaces of the separated portions.