(1)
A mezzanine need not terminate at a vertical fire separation nor be protected in conformance with the requirements of Articles 3.2.8.3. to 3.2.8.8. provided the mezzanine
(a)
serves a Group A, Division 1 major occupancy,
(b)
serves a Group A, Division 3 major occupancy in a building not more than 2 storeys in building height, or
(c)
serves a Group A, C, D, E or F major occupancy and
(i)
is 500 m
(ii)
conforms to Sentence 3.2.1.1.(3) or (4).
(2)
Except for floors referred to in Sentence 3.1.10.3.(1) and Article 3.2.1.2., openings through a horizontal fire separation for vehicular ramps in a storage garage are not required to be protected with closures and need not conform to this Subsection.
(3)
If a closure in an opening in a fire separation would disrupt the nature of a manufacturing process, such as a continuous flow of material from storey to storey, the closure for the opening is permitted to be omitted provided precautions are taken to offset the resulting hazard. (See Note A-3.2.8.2.(3))
(4)
An interconnected floor space in a Group B, Division 1 occupancy need not conform to the requirements of Articles 3.2.8.3. to 3.2.8.8. provided the interconnected floor space does not interconnect more than 2 adjacent storeys.
(5)
Except as permitted by Sentence (6), openings for escalators and inclined moving walks need not conform to the requirements in Articles 3.2.8.3. to 3.2.8.8. provided
(a)
the opening for each escalator or walk does not exceed 10 m
(b)
the building is sprinklered throughout,
(c)
closely spaced sprinklers and associated draft stops are installed around the openings in conformance with NFPA 13, “Standard for the Installation of Sprinkler Systems,” and
(d)
the interconnected floor space contains only Group A, Division 1, 2 or 3, Group D or Group E occupancies. (See Note A-3.2.8.2.(6)(c))
(6)
An interconnected floor space need not conform to the requirements of Articles 3.2.8.3. to 3.2.8.8. provided
(a)
it consists of the first storey and the storey next above or below it, but not both,
(b)
it is sprinklered throughout or, where the building area is not more than one-half of the area permitted by Subsection 3.2.2., the openings through the floor are used only for stairways, escalators or moving walks, and (See Note A-3.2.8.2.(6)(b))
(c)
it contains only Group A, Division 1, 2 or 3, Group D, Group E, or Group F, Division 2 or 3 major occupancies. (See Note A-3.2.8.2.(6)(c))