(1)
The requirements for a roof assembly to have a fire-resistance rating stated in Articles 3.2.2.25., 3.2.2.30. and 3.2.2.32. are permitted to be waived for gymnasiums, swimming pools, arenas, and rinks, provided
(a)
the roof carries no loads other than normal roof loads, including permanent access walks, and ventilating, sound and lighting equipment, and
(b)
except as provided in Sentence (3), no part of the roof assembly is less than 6 m above the main floor or balcony. (See Note A-3.2.2.17.(1))
(2)
The requirements for a mezzanine to have a fire-resistance rating stated in Articles 3.2.2.25., 3.2.2.30. and 3.2.2.32. are permitted to be waived for gymnasiums, swimming pools, arenas, and rinks, provided
(a)
the mezzanine is not required to be considered as a storey as per Sentences 3.2.1.1.(3) to (5),
(b)
the mezzanine is used only for ventilating, sound and lighting equipment, and
(c)
except as provided in Sentence (3), no part of the mezzanine is less than 6 m above the main floor or balcony.
(3)
The restrictions concerning minimum distance stated in Clauses (1)(b) and (2)(c) shall not apply to
(a)
an inclined and stepped floor ascending from the main floor that is used for seating purposes only, or
(b)
a balcony used for seating purposes only.