(1)
Except as provided by Sentences (2) to (4) and (9), an automatic sprinkler system shall be designed, constructed, installed and tested in conformance with NFPA 13, “Standard for the Installation of Sprinkler Systems.” (See Note A-3.2.5.12.(1))
(2)
Instead of the requirements of Sentence (1), NFPA 13R, “Standard for the Installation of Sprinkler Systems in Low-Rise Residential Occupancies,” is permitted to be used for the design, construction, installation and testing of an automatic sprinkler system installed
(a)
in a building of residential occupancy throughout that is not more than 4 storeys in building height and conforms to Article 3.2.2.47., 3.2.2.49., 3.2.2.51., 3.2.2.52. or 3.2.2.55.,
(b)
in a building of Group B, Division 3 occupancy that contains sleeping accommodation for not more than 10 persons and not more than six occupants require assistance in evacuation in case of an emergency,
(c)
in a building that contains a retirement home constructed in accordance with Article 3.2.2.55D., or
(d)
in a building that contains a retirement home constructed in accordance with Article 3.2.2.55E., where the fire separation required by Sentence 3.3.4.11.(2) on the storey immediately below the roof assembly is continuous to the underside of the roof deck. (See Note A-3.2.5.12.(2))
(3)
Instead of the requirements of Sentence (1), NFPA 13D, “Standard for the Installation of Sprinkler Systems in One-and Two-Family Dwellings and Manufactured Homes,” is permitted to be used for the design, construction and installation of an automatic sprinkler system installed
(a)
in a building of residential occupancy throughout that contains not more than two dwelling units,
(b)
reserved,
(c)
in a building of residential occupancy throughout that contains more than two dwelling units, provided
(i)
except for a secondary suite, no dwelling unit is located above another dwelling unit,
(ii)
all suites are separated by a vertical fire separation having a fire-resistance rating of not less than 1 h that provides continuous protection from the top of the footing to the underside of the roof deck, with any space between the top of the wall and the roof deck tightly filled with mineral wool or noncombustible material,
(iii)
each dwelling unit has its own sprinkler water supply provided in accordance with NFPA 13D, “Standard for the Installation of Sprinkler Systems in One- and Two-Family Dwellings and Manufactured Homes,”
(iv)
a passive purge sprinkler system design is used as described in NFPA 13D, “Standard for the Installation of Sprinkler Systems in One- and Two-Family Dwellings and Manufactured Homes,” and
(v)
where the sprinkler system is taken into consideration for the reduction of limiting distance, all rooms, including closets, bathrooms and attached garages, that adjoin an exposing building face are sprinklered, notwithstanding any exemption stated in NFPA 13D, “Standard for the Installation of Sprinkler Systems in One- and Two-Family Dwellings and Manufactured Homes.” (See Note A-3.2.5.12.(2))
(4)
If a building contains fewer than 9 sprinklers, the water supply for these sprinklers is permitted to be supplied from the domestic water system for the building provided the required flow for the sprinklers can be met by the domestic system.
(5)
If a water supply serves both an automatic sprinkler system and a system serving other equipment, control valves shall be provided so that either system can be shut off independently.
(6)
Notwithstanding the requirements of the standards referenced in Sentences (1) and (2) for the installation of automatic sprinkler systems, sprinklers shall not be omitted in any room or closet in the storey immediately below a roof assembly. (See Note A-3.2.5.12.(6))
(7)
Notwithstanding the requirements of the standards referenced in Sentences (1) and (2) regarding the installation of automatic sprinkler systems, in buildings conforming to Article 3.2.2.48., 3.2.2.51., 3.2.2.57., 3.2.2.60. or 3.2.2.93., sprinklers shall be provided for all balconies and decks, other than, (a) balconies or decks that are not more than 610 mm in depth measured perpendicular to the exterior wall of the building, or
(b)
decks on the uppermost roof of the building. (See Note A-3.2.5.12.(7))
(8)
Sprinklers in elevator machine rooms shall have a temperature rating not less than that required for an intermediate temperature classification and shall be protected against physical damage. (See Note A-3.2.5.12.(8))
(9)
Except as provided in Subsection 3.2.8., closely spaced sprinklers and associated draft stops need not be installed around floor openings in conformance with NFPA 13, “Standard for the Installation of Sprinkler Systems.”
(10)
The sprinkler system described in Sentence (3) shall be provided with a minimum 20 min water supply when installed in a retirement home.