(1)

A building classified as Group G, Division 1 is permitted to be of combustible construction or noncombustible construction, used singly or in combination, provided

(a)

the building is sprinklered throughout,

(b)

the building is not more than 3 storeys in building height,

(c)

the building has a building area not more than

(i)

4 800 m2, if 1 storey in building height,

(ii)

2 400 m2, if 2 storeys in building height, or

(iii)

1 600 m2, if 3 storeys in building height,

(d)

floor assemblies, including the floor assembly immediately above a basement, are fire separations with a fire-resistance rating not less than 45 min, and

(e)

loadbearing walls, columns and arches have a fire-resistance rating not less than that required for the supported assembly.