(1)
A building classified as Group D is permitted to conform to Sentence (2) provided
(a)
it is not more than 6 storeys in building height, and
(b)
it has a building area not more than the value in Table 3.2.2.58.
Table 3.2.2.58. Maximum Building Area, Group D, up to 6 Storeys
Forming Part of Sentence 3.2.2.58.(1)
(2)
The building referred to in Sentence (1) shall be of noncombustible construction, and
(a)
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, except that in a building not more than 1 storey in building height this requirement is waived, and
(d)
loadbearing walls, columns and arches shall have a fire-resistance rating not less than that required for the supported assembly.