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3.1.8.14. Hold Open Devices
1) Except as provided in Sentence 3.1.8.10. (2) and 3.1.8.11. (3), a hold-open device is permitted to be used on a closure in a required fire separation, other than on an exit stair door in a building more than 3 storeys in building height and on a door for a vestibule required by 3.3.5.7., provided the device is designated to release the closure in conformance with this Article.
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3.1.8.13. Self-closing Devices
1) Except as permitted by Sentence (2), every door in a fire separation, other than doors to freight elevators and dumbwaiters, shall be equipped with a self-closing device designated to return the door to the closed position after each use.
2) A self-closing device need not be provided on a door that is located between
a) a classroom and a corridor providing access to exit from the classroom in a building that is not more than 3 storeys in building height,
b) a public corridor and an adjacent room of business and personal service occupancy in a building that is not more than 3 storeys in building height provided the door is not located in a dead-end portion of the corridor,
c) a patients' sleeping room and a corridor serving the patients' sleeping room, provided the room and corridor are within a fire compartment in a hospital or nursing home with treatment that complies with the requirements of Article 3.3.3.5., or
d) a patients' sleeping room and an adjacent room that serves the patients' sleeping room, provided these rooms are within a fire compartment in a hospital or nursing home with treatment that complies with the requirements of Article 3.3.3.5.
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3.1.8.7. Location of Fire Dampers and Smoke Dampers
1) Except as provided in Article 3.1.8.8., a fire damp having a fire protection rating conforming to Sentence 3.1.8.4.(2) shall be installed in conformance with Article 3.1.8.10. in ducts or air-transfer openings that penetrate an assembly required to be a fire separation.
2) Except as provided in Article 3.1.8.9., a smoke damper or a combination smoke/fire damper shall be installed in conformance with Article 3.1.8.11. in ducts or air-transfer openings that penetrate an assembly required to be a fire separation, where the fire separation
a) separates a public corridor,
b) contains an egress door refereed to in Sentence 3.4.2.4.(2)
c) serves an assembly, care, treatment, detention or residential occupancy, or
d) is installed to meet the requirements of Clause 3.3.1.7.(1)(b) or Sentence 3.3.3.5.(4).
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3.1.8.6. Maximum Openings
1) The size of an opening in an interior fire separation required to be protected with a closure shall be not more than 11 sqm, with no dimension more than 3.7m, if a fire compartment on either side of the fire separation is not sprinklered.
2) the size of an opening in an interior fire separation required to be protected with a closure shall be not more than 22 sqm, with no dimension more than 6m, provided the fire compartments on both sides of the fire separation are sprinklered.
Question:
How many openings are permitted in a fire separation?
Please give your answer by comments.
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3.1.8.3. Continuity of Fire Separations
1) Except as permitted by Sentence 3.6.4.2.(2), a horizontal service space or other concealed space located above a required vertical fire separation, including the walls of a vertical shaft, shall be divided at the fire separation by an equivalent fire separation within the service space.
2) The fire separation required in Sentence (1) shall terminate so that smoke-tight joints are provided where it abuts on or intersects
a) a floor,
b) a roof slab, or
c) a roof deck.
3) Except as required by Sentence 3.6.3. for a shaft penetrating a roof assembly, a shaft, including an exit enclosure, that penetrates a fire separation, shall
a) extend through any horizontal service space or any other concealed space, and
b) terminate so that smoke-tight joints are provided where the shafts abuts on or intersects
i) a floor,
ii) a roof slab, or
iii) a roof deck.
4) The continuity of a fire separation shall be maintained where it abuts another fire separation, a floor, a ceiling, a roof, or an exterior wall assembly.
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3.1.7.5. Rating of Supporting Construction
1) Except as permitted by Sentence (2) and by Articles 3.2.2.20. to 3.2.2.90. for mixed types of construction, all loadbearing walls, columns and arches in the storey immediately below a floor or roof assembly required to have a fire resistance rating shall have a fire-resistance rating not less than that required for the supported floor or roof assembly.
2) Loadbearing walls, columns and arches supporting a service room or service space need not conform to Sentence (1)
3) Except for noncombustible roof assemblies required by Clauses 3.2.2.50.(2)(c) and 3.2.2.58.(2)(c), if an assembly is required to be of noncombustible construction and have a fire resistance rating, it shall be supported by noncombustible construction.