9.11.1.1 — Required Protection

(1) This Article applies where the required protection is provided in accordance with Clause 9.11.1.1. (1)(b) and compliance is demonstrated in accordance with Clause 9.11.1.3. (2)(b). (2) Flanking wall assemblies connected to a separating floor or ceiling assembly shall be constructed with, (a) concrete or concrete block having a mass per area greater than 200 kg/m2 , or (b) gypsum board finish that, (i) is supported on wood or steel framing, and (ii) ends or is interrupted where it meets the structure of the separating floor or ceiling assembly. (3) Flanking wall and ceiling assemblies connected to a separating wall assembly shall be constructed with, (a) concrete or concrete block having a mass per area greater than 300 kg/m2, or (b) gypsum board finish that, (i) is supported on wood or steel framing, and (ii) ends or is interrupted where it meets the structure of the separating wall assembly or, for double-stud walls, where it meets the space between the two lines of studs. (4) Flanking floor assemblies connected to a separating wall assembly shall be, (a) constructed, (i) with concrete having a mass per area greater than 300 kg/m2 , or (ii) in accordance with Section 9.16., or (b) supported on joists or trusses that are not continuous across the junction and are covered with floor treatments in accordance with Table 9.11.1.4. for the applicable wall construction.