(1)
Except where fire dampers, window assemblies and glass block are used as closures, closures of the same fire-protection rating installed on opposite sides of the same opening are deemed to have a fire-protection rating equal to the sum of the fire-protection ratings of the closures. (See Note A-3.1.8.1.(2))
(2)
Except as otherwise specified in this Part, every door, fire damper, window assembly or glass block used as a closure in a required fire separation shall be installed in conformance with NFPA 80, “Standard for Fire Doors and Other Opening Protectives.” (See Note A-3.1.8.1.(2))
(3)
Except as otherwise specified in this Part, every smoke damper or combination smoke/ fire damper used as a closure in a required fire separation shall be installed in conformance with NFPA 105, “Standard for Smoke Door Assemblies and Other Opening Protectives.”
(4)
If a door is installed so that it could damage the integrity of a fire separation if its swing is unrestricted, door stops shall be installed to prevent the damage.
(5)
Reserved.
(6)
A leakage-rated door assembly complying with Sentence 3.1.8.4.(4) shall be installed in
(a)
fire separations in protected floor areas described in Clause 3.3.1.7.(1)(b),
(b)
fire separations in care or care and treatment occupancies referred to in Sentence 3.3.3.5.(4) and installed in fire separations in retirement homes referred to in Sentence 3.3.4.11.(4),
(c)
except as provided in Sentence (8), fire separations of public corridors serving dwelling units in storeys that are not sprinklered, and
(d)
firewalls that are a horizontal exit referred to in Sentence 3.3.3.5.(3).
(7)
Leakage-rated door assemblies required by Sentence (6) shall be installed in accordance with NFPA 105, “Standard for Smoke Door Assemblies and Other Opening Protectives.”
(8)
A leakage-rated door assembly need not be installed where a dwelling unit served by a public corridor has
(a)
a second and separate means of egress, or
(b)
an open-air balcony that is sized to accommodate the number of occupants for which the dwelling unit is intended.