jswizzle3737/ontario_laws_and_regs huggingface dataset:
Notes to Table 3.1.3.1.:
3.1.11.2. Fire Blocks in Wall Assemblies (1) Except as permitted by Sentence (2), fire blocks
conforming to Article 3.1.11.7. shall be provided to block off concealed spaces within a wall assembly, (a) at every floor level, (b) at every ceiling level where the ceiling forms part of an assembly required to have a fire-resistance rating, and (c) so that the maximum horizontal dimension is not more than 20 m and the maximum vertical dimension is not more than 3 m. (2) Fire blocks conforming to Sentence (1) are not required provided, (a) the wall space is filled with insulation, (b) the exposed construction materials and any insulation within the wall space are noncombustible, (c) the exposed materials within the wall space, including insulation but not including wiring, piping or similar services, have a flame-spread rating not more than 25 on any exposed surface, or on any surface that would be exposed by cutting through the material in any direction, and fire blocks
are installed so that the vertical distance between them is not more than 10 m, or (d) the insulated wall assembly contains not more than one concealed air space and the horizontal thickness of that air space is not more than 25 mm.
Notes to Table 3.1.3.1.:
3.1.11.3. Fire Blocks between Nailing and Supporting Elements (1) In a building required to be of noncombustible construction, a concealed space in which there is an exposed ceiling finish with a flame-spread rating
more than 25, shall be provided with fire blocks conforming to Article 3.1.11.7. between wood nailing elements, so that the maximum area of the concealed space is not more than 2 m2. (2) In a building required to be of noncombustible construction, fire blocks conforming to Article 3.1.11.7. shall be provided in the concealed spaces created by the wood members permitted by Sentence 3.1.5.8.(2), so that the maximum area of a concealed space is not more than 10 m2. (3) In a building or part of a building permitted to be of encapsulated mass timber construction, a concealed space in which there is an exposed ceiling finish with a flame-spread rating more than 25 shall be provided with fire blocks conforming to Article 3.1.11.7. between wood nailing elements so that the maximum area of the concealed space is not more than 2 m2. (4) In a building or part of a building permitted to be of encapsulated mass timber construction, fire blocks conforming to Article 3.1.11.7. shall be provided in the concealed spaces created by the wood members permitted by Sentence 3.1.6.12.(1) so that the maximum area of a concealed
space is not more than 10 m2.
Notes to Table 3.1.3.1.:
3.1.11.4. Fire Blocks between Vertical and Horizontal Spaces (1) Fire blocks
conforming to Article 3.1.11.7. shall be provided, (a) at all interconnections between concealed vertical and horizontal spaces in interior coved ceilings, drop ceilings and soffits in which the exposed construction materials within the space have a flame‑spread rating more than 25, and (b) at the end of each run and at each floor level in concealed spaces between stair stringers in which the exposed construction materials within the space have a flame‑spread rating more than 25.
Notes to Table 3.1.3.1.:
3.1.11.5. Fire Blocks in Horizontal Concealed Spaces (1) Except for a crawl space conforming to Sentence 3.1.11.6.(1), a horizontal concealed space within a floor assembly or roof assembly of combustible construction, in which sprinklers are not installed, shall be separated by construction conforming to Article 3.1.11.7. into compartments not more than, (a) 600 m2 in area with no dimension more than 60 m, if the exposed construction materials within the space have a flame-spread rating not more than 25, and (b) 300 m2 in area with no dimension more than 20 m, if the exposed construction materials within the space have a flame-spread rating more than 25. (2) A concealed space in an exterior cornice, a mansard style roof, a balcony or a canopy in which exposed construction materials within the space have a flame‑spread rating
more than 25, shall be separated by construction conforming to Article 3.1.11.7., (a) at locations where the concealed space extends across the ends of required vertical fire separations, and (b) so that the maximum dimension in the concealed space is not more than 20 m. (3) Except as provided by Sentence (4), a horizontal concealed space within a floor assembly or roof assembly of combustible construction in a building within the scope of Article 3.2.2.43A. or 3.2.2.50A. shall be separated by construction conforming to Article 3.1.11.7. into compartments not more than, (a) 600 m2 in area with no dimension more than 60 m, if the exposed construction materials within the space have a flame-spread rating not more than 25, and (b) 300 m2 in area with no dimension more than 20 m, if the exposed construction materials within the space have a flame-spread rating more than 25. (3.1) Except for crawl spaces conforming to Sentence 3.1.11.6.(1) and except as provided in Sentence (4), in buildings or parts of buildings conforming to Article 3.2.2.42A. or 3.2.2.49A., horizontal concealed spaces within a floor assembly or roof assembly of encapsulated mass timber construction shall be separated by construction conforming to Article 3.1.11.7. into compartments that are not more than, (a) 600 m2 in area with no dimension more than 60 m, if the exposed construction materials within the space have a flame-spread rating not more than 25, and (b) 300 m2 in area with no dimension more than 20 m, if the exposed construction materials within the space have a flame-spread rating not more than 25. (4) Sentences (3) and (3.1) do not apply if the horizontal concealed space within the floor assembly or roof assembly is entirely filled with noncombustible
insulation such that any air gap between the top of the insulation and the underside of the floor or roof deck does not exceed 50 mm.
Notes to Table 3.1.3.1.:
3.1.11.6. Fire Blocks in Crawl Spaces (1) A crawl space that is not considered as a basement
by Article 3.2.2.9. and in which sprinklers are not installed, shall be separated by construction conforming to Article 3.1.11.7. into compartments not more than 600 m2 in area with no dimension more than 30 m.
Notes to Table 3.1.3.1.:
3.1.11.7. Fire Block Materials (1) Except as permitted by Sentences (2) to (4) and (7) fire blocks shall remain in place and prevent the passage of flames for not less than 15 min when subjected to the standard fire exposure in CAN/ULC-S101, “Fire Endurance Tests of Building Construction and Materials”. (2) Gypsum board not less than 12.7 mm thick and sheet steel not less than 0.38 mm thick need not be tested in conformance with Sentence (1) provided all joints have continuous support. (3) In a building required to be of noncombustible construction, wood nailing elements described in Article 3.1.5.6. need not be tested in conformance with Sentence (1). (3.1) In a building or part of a building permitted to be of encapsulated mass timber construction, wood nailing elements referred to in Article 3.1.6.11. need not be tested in conformance with Sentence (1). (4) In a building permitted to be of combustible construction, in a combustible roof system permitted by Sentences 3.1.5.3.(2) and 3.1.6.7.(1), and in a raised platform permitted by Sentence 3.1.5.8.(2) or 3.1.6.12.(1), fire blocks are permitted to be, (a) solid lumber or a structural composite lumber product conforming to ASTM D5456, “Evaluation of Structural Composite Lumber Products”, not less than 38 mm thick, (b) phenolic bonded plywood, OSB or waferboard not less than 12.5 mm thick with joints supported, or (c) two thicknesses of lumber or a structural composite lumber product conforming to ASTM D5456, “Evaluation of Structural Composite Lumber Products”, each not less than 19 mm thick with joints staggered, where the width or height of the concealed space requires more than one piece of lumber or structural composite lumber product not less than 38 mm thick to block off the space. (5) Openings through fire blocks shall be protected to maintain the integrity of the construction. (6) Where fire blocks are penetrated by construction elements or by service equipment, a fire stop
shall be used to seal the penetration. (7) In a building permitted to be of combustible construction, semi-rigid fibre insulation board, produced from glass, rock or slag, is permitted to be used to block the vertical space in a double wythe wall assembly formed at the intersection of the floor assembly and the walls, provided the insulation board, (a) has a density not less than 45 kg/m3, (b) is securely fastened to one set of studs, (c) extends from below the bottom of the top plates in the lower storey to above the top of the bottom plate in the upper storey, and (d) completely fills the portion of the vertical space between the headers and between the wall plates. 3.1.12. Flame-Spread Rating and Smoke Developed Classification
Notes to Table 3.1.3.1.:
3.1.12.1. Determination of Ratings (1) Except as required by Sentence (2) and as permitted by Sentence (3), the flame-spread rating and smoke developed classification of a material, assembly, or structural member shall be determined on the basis of no fewer than three tests conducted in conformance with CAN/ULC-S102, “Test for Surface Burning Characteristics of Building Materials and Assemblies”. (2) The flame-spread rating and smoke developed classification of a material or assembly shall be determined on the basis of no fewer than three tests conducted in conformance with CAN/ULC-S102.2, “Test for Surface Burning Characteristics of Flooring, Floor Coverings, and Miscellaneous Materials and Assemblies”, if the material or assembly, (a) is designed for use in a relatively horizontal position with only its top surface exposed to air, (b) cannot be tested in conformance with Sentence (1) without the use of supporting material that is not representative of the intended installation, or (c) is thermoplastic. (3) A material, assembly, or structural member is permitted to be assigned a flame-spread rating and smoke developed classification on the basis of MMAH Supplementary Standard SB-2, “Fire Performance Ratings”. 3.1.13. Interior Finish
Notes to Table 3.1.3.1.:
3.1.13.1. Interior Finish Description (1) Interior finish material shall include any material that forms part of the interior surface of a floor, wall, partition
or ceiling, including, (a) interior cladding of plaster, wood or tile, (b) surfacing of fabric, paint, plastic, veneer or wallpaper, (c) doors, windows and trim, (d) lighting elements, such as light diffusers and lenses forming part of the finished surface of the ceiling, and (e) carpet material that overlies a floor that is not intended as the finished floor.
Notes to Table 3.1.3.1.:
3.1.13.2. Flame-Spread Rating (1) Except as otherwise required or permitted by this Subsection, the flame-spread rating of interior wall and ceiling finishes, including glazing and skylights, shall be not more than 150 and shall conform to Table 3.1.13.2. Table 3.1.13.2.   Flame-Spread Ratings Forming Part of Sentence 3.1.13.2.(1) Item   Column 1   Column 2   Column 3 

      Occupancy, Location or Element   Maximum Flame-Spread Rating for Walls and Ceilings 

          Sprinklered   Not Sprinklered 

  1.   Group A, Division 1 occupancies, including doors, skylights, glazing and light diffusers and lenses   150   75 

  2.   Group B occupancies   150   75 (2) 

  3.   Exits(1)   25   25 

  4.   Lobbies described in Sentence 3.4.4.2.(2)   25   25 

  5.   Covered vehicular passageways, except for roof assemblies of heavy timber construction in such passageways   25   25 

  6.   Vertical service spaces   25   25
Notes to Table 3.1.13.2.:
3.1.13.3. Plumbing Fixtures and Bathrooms Finishes (1) The flame-spread rating of interior wall and ceiling finishes for a bathroom in a suite of residential occupancy shall be not more than 200. (2) Plumbing fixtures shall have a flame-spread rating not more than 200.
Notes to Table 3.1.13.2.:
3.1.13.4. Light Diffusers and Lenses (1) The flame-spread rating of combustible light diffusers and lenses in all occupancies other than Group A, Division 1 is permitted to be more than the flame-spread rating limits required elsewhere in this Subsection, provided the light diffusers and lenses, (a) have a flame-spread rating not more than 250 and a smoke developed classification not more than 600 when tested in conformance with CAN/ULC-S102.2, “Test for Surface Burning Characteristics of Flooring, Floor Coverings, and Miscellaneous Materials and Assemblies”, (b) fall to the bottom of the test apparatus before igniting when tested in conformance with ULC-S102.3, “Fire Test of Light Diffusers and Lenses”, (c) are not prevented from falling from the ceiling by construction located beneath the elements, and (d) are not used in a corridor that is required to be separated from the remainder of the building
by a fire separation or in an exit
shaft unless individual diffusers or lenses are not more than 1 m2
in area and are not less than 1.2 m apart.
Notes to Table 3.1.13.2.:
3.1.13.5. Skylights (1) Individual combustible skylights in a corridor that is required to be separated from the remainder of the storey by a fire separation
shall be not more than 1 m2 in area and not less than 1.2 m apart.
Notes to Table 3.1.13.2.:
3.1.13.6. Corridors (1) Except as permitted by Sentences (2) and (3), the flame-spread rating shall be not more than 75 for the interior wall finish of, (a) a public corridor, (b) a corridor used by the public in, (i) an assembly occupancy, or (ii) a care,
care and treatment or detention occupancy, (c) a corridor serving classrooms, or (d) a corridor serving sleeping rooms in a care, care and treatment or detention occupancy. (2) The flame-spread rating limit specified in Sentence (1) does not apply to corridors referred to in Sentence (1) provided the flame-spread rating is not more than, (a) 25 on the upper half of the wall, and (b) 150 on the lower half of the wall. (3) The flame-spread rating limits specified in Sentences (1) and (2) for corridors referred to in Sentence (1) do not apply to a corridor in which the flame-spread rating is not more than 150 provided the floor area is sprinklered. (4) The flame-spread rating limits specified in Sentences (1) to (3) apply to occupancies in the corridor as well as to the corridor itself. (5) Except in a floor area that is sprinklered and as permitted in Sentence (6), the interior ceiling finish of corridors and occupancies
referred to in Sentences (1) and (4) shall have a flame-spread rating not more than 25. (6) The flame-spread rating limits specified in Sentence (5) do not apply to a corridor in which the flame-spread rating is not more than 150 provided the floor area
is sprinklered.
Notes to Table 3.1.13.2.:
3.1.13.7. High Buildings (1) Except as permitted by Sentences (2) and (3), the interior wall, ceiling and floor finishes in a building regulated by the provisions of Subsection 3.2.6. shall conform to the flame-spread rating requirements in Articles 3.1.13.2. to 3.1.13.6. and to the flame-spread rating and smoke developed classification values in Table 3.1.13.7. Table 3.1.13.7.   Flame-Spread Rating and Smoke Developed Classification in a High Building Forming Part of Sentences 3.1.13.7.(1) and (2) Item   Column 1   Column 2   Column 3   Column 4   Column 5   Column 6   Column 7 

      Location or Element   Maximum Flame-Spread Rating   Maximum Smoke Developed Classification  

          Wall Surface   Ceiling Surface (1)   Floor Surface   Wall Surface   Ceiling Surface (1)   Floor Surface 

  1.   Exit stairways, vestibules to exit stairs and lobbies described in Sentence 3.4.4.2.(2)   25   25   25   50   50   50 

  2.   Corridors not within suites   (2)   (2)   300   100   50   500 

  3.   Elevator cars   75   75   300   450   450   450 

  4.   Elevator vestibules   25   25   300   100   100   300 

  5.   Service spaces and service rooms   25   25   25   50   50   50 

  6.   Other locations and elements   (2)   (2)   No limit   300   50   No limit
Notes to Table 3.1.13.7.:
3.1.13.8. Noncombustible Construction (1) In a building required to be of noncombustible construction, (a) the flame-spread ratings required by Subsection 3.1.5. shall apply in addition to the requirements in this Subsection, and (b) the flame-spread ratings for exits in this Subsection shall also apply to any surface in the exit that would be exposed by cutting through the material in any direction, except that this requirement does not apply to doors, heavy timber construction
in a sprinklered building and fire-retardant treated wood.
Notes to Table 3.1.13.7.:
3.1.13.9. Underground Walkways (1) Except for paint, the interior wall and ceiling finishes of an underground walkway shall be of noncombustible materials.
Notes to Table 3.1.13.7.:
3.1.13.10. Exterior Exit Passageway (1) The wall and ceiling finishes of an exterior exit
passageway that provides the only means of egress
from the rooms or suites it serves, including the soffit beneath and the guard on the passageway, shall have a flame-spread rating not more than 25, except that a flame-spread rating not more than 150 is permitted for up to 10% of the total wall area and for up to 10% of the total ceiling area.
Notes to Table 3.1.13.7.:
3.1.13.11. Elevator Cars (1) The wall and ceiling surfaces of elevator cars shall have a flame-spread rating not more than 75. (2) The wall, ceiling and floor surfaces of elevator cars shall have a smoke developed classification not more than 450. 3.1.13.12. Encapsulated Mass Timber Construction (1) In a building or part of a building permitted to be of encapsulated mass timber construction, (a) the flame-spread ratings required by Subsection 3.1.6. shall apply in addition to the requirements in this Subsection, and (b) the flame-spread ratings for exits required by this Subsection shall also apply to any surface in the exit
that would be exposed by cutting through the material in any direction, except that this requirement does not apply to doors, structural mass timber elements conforming to Sentence 3.1.6.4.(3), heavy timber construction and fire-retardant-treated wood. 3.1.14. Roof Assemblies
Notes to Table 3.1.13.7.:
3.1.14.1. Fire-Retardant Treated Wood Roof Systems (1) If a fire-retardant treated wood roof system is used to comply with the requirements of Subsection 3.2.2., the roof deck assembly shall meet the conditions of acceptance of CAN/ULC-S126, “Test for Fire Spread Under Roof-Deck Assemblies”. (2) Supports for the roof deck assembly referred to in Sentence (1) shall consist of, (a)  fire-retardant treated wood, (b)  heavy timber construction, (c)  noncombustible construction, or (d) a combination of the items described in Clauses (a) to (c).
Notes to Table 3.1.13.7.:
3.1.14.2. Metal Roof Deck Assemblies (1) Except as permitted by Sentence (2), a metal roof deck assembly shall meet the conditions of acceptance of CAN/ULC-S126, “Test for Fire Spread Under Roof-Deck Assemblies”, if, (a) it supports a combustible material above the deck that could propagate a fire beneath the roof deck assembly, and (b) the deck is used to comply with the requirements of Sentences 3.2.2.25.(2), 3.2.2.32.(2), 3.2.2.53.(2), 3.2.2.59.(2), 3.2.2.70.(2) and 3.2.2.76.(2) for noncombustible construction. (2) The requirements of Sentence (1) are waived provided, (a) the combustible
material above the roof deck is protected, (i) by not less than 12.7 mm thick gypsum board, mechanically fastened to a supporting assembly if located beneath the roof deck, or (ii) by a thermal barrier conforming to Clause 3.1.5.12.(4)(c) or (d) that is located on the underside of the combustible material or beneath the roof deck, (b) the building
is sprinklered, or (c) the roof assembly has a fire-resistance rating not less than 45 min. 3.1.15. Roof Covering
Notes to Table 3.1.13.7.:
3.1.15.1. Roof Covering Classification (1) A roof covering classification shall be determined in conformance with CAN/ULC-S107, “Fire Tests of Roof Coverings”.
Notes to Table 3.1.13.7.:
3.1.15.2. Roof Coverings (1) Except as provided in Sentences (2) to (5), every roof covering shall have a Class A, B or C classification as determined in accordance with Article 3.1.15.1. (2) A roof covering is not required to have a Class A, B or C classification for, (a) a tent, (b) an air-supported structure, (c) a building
of Group A, Division 2 occupancy not more than 2 storeys in building height and not more than 1 000 m2 in building area, provided the roof covering is underlaid with noncombustible
material, or (d) a steel building
system described in Article 4.3.4.3., provided the roof covering consists of metal sheets, metal shingles or other noncombustible
roofing materials. (3) Except as provided in Sentence (5), roof coverings on buildings
within the scope of Article 3.2.2.43A. or 3.2.2.50A. shall have a Class A classification if the roof height is greater than 25 m measured from the floor of the first storey to the highest point of the roof. (4) Except as provided in Sentence (5), roof coverings in buildings or parts of buildings
permitted to be of encapsulated mass timber construction
shall have a Class A classification if the roof height is greater than 25 m measured from the floor of the first storey to the highest point of the roof. (5) Where buildings or parts of a building conforming to Article 3.2.2.42A., 3.2.2.43A., 3.2.2.49A or 3.2.2.50A include non-contiguous roof assemblies at different elevations, the roof coverings referred to in Sentences (3) and (4) are permitted to be evaluated separately to determine the roof covering classification required. 3.1.16. Fabrics
Notes to Table 3.1.13.7.:
3.1.16.1. Fabric Awnings, Canopies and Marquees (1) Fabrics used as part of an awning, canopy
or marquee that is located within or attached to a building of any type of construction shall conform to CAN/ULC-S109, “Flame Tests of Flame-Resistant Fabrics and Films”. 3.1.17. Occupant Load
Notes to Table 3.1.13.7.:
3.1.17.2. Dance Floor (1) The occupant load of a room in which a dance floor is situated shall be calculated in respect of that portion of the room that is not occupied by the dance floor.
Notes to Table 3.1.13.7.:
3.1.17.3. Public Pools (1) The occupant load of a public pool, except a wave action pool, shall be determined by the following formula:  where, D = the water surface area in square metres of the part of the pool that is deeper than 1 350 mm; and S = the water surface area in square metres of the part of the pool that is 1 350 mm in depth or less. (2) The occupant load of a wave action pool shall be determined by the following formula:  where, D = the water surface area in square metres of the part of the pool where the still water depth is greater than 1 000 mm; and S = the water surface area in square metres of the part of the pool where the still water depth is 1 000 mm or less. 3.1.18. Drainage and Grades
Notes to Table 3.1.13.7.:
3.1.18.1. Drainage (1) The building shall be located and the building site graded so that water will not accumulate at or near the building and will not adversely affect any adjacent properties. 3.1.19. Above Ground Electrical Conductors
Notes to Table 3.1.13.7.:
3.1.19.1. Clearance to Buildings (1) A building shall not be located beneath existing above ground electrical conductors. (2) The horizontal clearance measured from the maximum conductor swing to the building, including balconies, fire escapes, flat roofs or other accessible projections beyond the face of the building, shall, (a) be not less than 1 m, for electrical conductors carrying voltages 750 V or less, except where necessary to connect to the electrical wiring of the building, (b) be not less than 3 m, for electrical conductors carrying voltages greater than 750 V but not exceeding 46 kV, (c) be not less than 3.7 m, for electrical conductors carrying voltages greater than 46 kV but not exceeding 69 kV, or (d) conform to the requirements of CAN/CSA-C22.3 No.1, “Overhead Systems”, for electrical conductors carrying voltages greater than 69 kV. (3) Where the swing of an above ground electrical conductor not owned or operated by an electrical supply authority is not known, a swing of not less than 1.8 m shall be used. (4) Sentences (1) to (3) do not apply to a building
containing electrical equipment and electrical installations used exclusively in the generation, transformation or transmission of electrical power or energy intended for sale or distribution to the public. 3.1.20. Glass in Guards
Notes to Table 3.1.13.7.:
3.1.20.1. Glass (1) Except as provided in Sentence 3.3.4.7.(1), glass in guards shall conform to MMAH Supplementary Standard SB-13, “Glass in Guards”.
Notes to Table 3.1.13.7.:
3.1.21. Revoked: O. Reg. 88/19, s. 27. Section 3.2. Building Fire Safety 3.2.1. General
Notes to Table 3.1.13.7.:
3.2.1.1. Exceptions in Determining Building Height (1) A rooftop enclosure provided for elevator machinery, a stairway or a
service room used for no purpose other than for service to the building, shall not be considered as a storey in calculating the building height. (2) Space under tiers of seats in a building
of the arena type shall not be considered as adding to the building height provided the space is used only for dressing rooms, concession stands and similar purposes incidental to the major occupancy of the building. (3) Except as required by Sentence (5), the space above a mezzanine need not be considered as a storey in calculating building height provided, (a) the aggregate area of mezzanines that are not superimposed does not exceed 40% of the open area of the room in which they are located, and (b) except as permitted in Sentence (8) and Sentence 3.3.2.11.(3) the space above the mezzanine is used as an open area without partitions or subdividing walls higher than 1 070 mm above the mezzanine
floor. (4) Except as required by Sentence (5), the space above a mezzanine need not be considered as a storey in calculating the building height provided, (a) the aggregate area of mezzanines that are not superimposed and do not meet the conditions of Sentence (3) does not exceed 10% of the floor area in which they are located, and (b) the area of mezzanine
in a suite does not exceed 10% of the area of that suite. (5) Except as permitted by Sentences (6) and (7), each level of mezzanine that is partly or wholly superimposed above the first level of mezzanine shall be considered as a storey in calculating the building height. (6) Platforms intended solely for periodic inspection and elevated catwalks need not be considered as floor assemblies or mezzanines for the purpose of determining building height
provided, (a) they are not used for storage, (b) they are constructed with noncombustible materials unless the building
is permitted to be of combustible construction, and (c) where they are intended to be occupied, they have an occupant load of not more than four persons. (7) Mezzanines, elevated walkways and platforms that are intended to be occupied in Group F, Division 2 or 3 major occupancies need not be considered as storeys in calculating building height provided, (a) the building is of noncombustible construction, and (b) the occupant load is not more than four persons. (8) The space above a mezzanine conforming to Sentence (3) is permitted to include an enclosed space whose area does not exceed 10% of the open area of the room in which the mezzanine
is located, provided the enclosed space does not obstruct visual communication between the open space above the mezzanine and the room in which it is located. (9) A service space in which facilities are included to permit a person to enter and to undertake maintenance and other operations pertaining to building services from within the service space need not be considered a storey if it conforms to Articles 3.2.5.15. and 3.3.1.23. and Sentences 3.2.4.20.(12), 3.2.7.3.(2), 3.3.1.3.(7), 3.4.2.4.(3) and 3.4.4.4.(9).
Notes to Table 3.1.13.7.:
3.2.1.2. Storage Garage Considered as a Separate Building (1) A basement used primarily as a storage garage is permitted to be considered as a separate building for the purposes of Subsection 3.2.2. and Sentences 3.2.5.13.(2) and (3), provided the floor and roof assemblies above the basement and, except as permitted by Sentence (2), the exterior walls of the basement
above the adjoining ground level are constructed as fire separations of, (a) masonry or concrete having a fire-resistance rating not less than 2 h, or (b)  noncombustible construction having a fire-resistance rating
of not less than 2 h, where the building conforms to Clauses 3.1.10.2.(4)(a) and (c) to (e). (2) The exterior wall of a basement that is required to be a fire separation with a fire-resistance rating in accordance with Sentence (1) is permitted to be penetrated by openings that are not protected by closures provided, (a) the storage garage is sprinklered, (b) every opening in the exterior wall is separated from storeys above the opening by a projection of the floor or roof assembly above the basement, extending not less than, (i) 1 m beyond the exterior face of the storage garage if the upper storeys are required to be of noncombustible construction, or (ii) 2 m beyond the exterior face of the storage garage if the upper storeys are permitted to be of combustible construction or encapsulated mass timber construction, or (c) the exterior walls of any storeys located above the floor or roof assembly referred to in Sentence (1) are recessed behind the outer edge of the assembly by not less than, (i) 1 m if the upper storeys are required to be of noncombustible construction, or (ii) 2 m if the upper storeys are permitted to be of combustible construction or encapsulated mass timber construction. (3) The floor or roof assembly projection referred to in Clause (2)(b) shall have a fire-resistance rating not less than 2 h and shall have no openings within the projection.
Notes to Table 3.1.13.7.:
3.2.1.3. Roof Considered as a Wall (1) For the purposes of this Section any part of a roof that is pitched at an angle of 60° or more to the horizontal and is adjacent to a space intended for occupancy within a building shall be considered as part of an exterior wall of the building.
Notes to Table 3.1.13.7.:
3.2.1.4. Floor Assembly over Basement (1) Except as permitted by Sentence 3.2.2.42.(3), 3.2.2.43.(3), 3.2.2.44.(3), 3.2.2.45.(3), 3.2.2.46.(3), 3.2.2.47.(3) or 3.2.2.48.(3), a floor assembly immediately above a basement shall be constructed as a fire separation having a fire-resistance rating conforming to the requirements of Articles 3.2.2.20. to 3.2.2.83. for a floor assembly, but not less than 45 min. (2) All loadbearing walls, columns and arches supporting a floor assembly immediately above a basement
shall have a fire-resistance rating not less than that required by Sentence (1) for the floor assembly.
Notes to Table 3.1.13.7.:
3.2.1.5. Fire Containment in Basements (1) Except as permitted by Sentences (2) and 3.2.2.15.(3), in a building in which an automatic sprinkler system is not required to be installed by Articles 3.2.2.20. to 3.2.2.83., every basement shall, (a) be sprinklered, or (b) be subdivided into fire compartments not more than 600 m2 in area by a fire separation having a fire-resistance rating not less than that required for the floor assembly immediately above the basement. (2) An open-air storey need not conform to Sentence (1).
Notes to Table 3.1.13.7.:
3.2.1.6. Mezzanines (1) The floor assembly of a mezzanine that is required to be considered as a storey in calculating
building height shall be constructed in conformance with the fire separation requirements for floor assemblies in Articles 3.2.2.20. to 3.2.2.83. 3.2.2. Building Size and Construction Relative to Occupancy
Notes to Table 3.1.13.7.:
3.2.2.1. Application (1) Except as permitted by Article 3.2.2.3., a building
shall be constructed in conformance with this Subsection to prevent fire spread and collapse caused by the effects of fire.
Notes to Table 3.1.13.7.:
3.2.2.2. Special and Unusual Structures (1) A structure that cannot be identified with the characteristics of a building in Articles 3.2.2.20. to 3.2.2.83. shall be protected against fire spread and collapse in conformance with good fire protection engineering practice.
Notes to Table 3.1.13.7.:
3.2.2.3. Exceptions to Structural Fire Protection (1) Fire protection is not required for, (a) steel lintels above openings not more than 2 m wide in loadbearing walls and not more than 3 m wide in non-loadbearing walls, (b) steel lintels above openings more than 2 m wide in loadbearing walls and more than 3 m wide in non-loadbearing walls, provided the lintels are supported at intervals of not more than 2 m by structural members with the required fire-resistance rating, (c) the bottom flanges of shelf angles and plates that are not a part of the structural frame, (d) steel members for framework around elevator hoistway doorways, steel for the support of elevator and dumbwaiter guides, counterweights and other similar equipment, that are entirely enclosed in a hoistway and are not a part of the structural frame of the building, (e) steel members of stairways and escalators that are not a part of the structural frame of a building, (f) steel members of porches, exterior balconies, exterior stairways, fire escapes, cornices, marquees
and other similar appurtenances, provided they are outside an exterior wall of a building, and (g)  loadbearing
steel or concrete members wholly or partly outside a building
face in a building not more than 4 storeys in building height
and classified as Group A, B, C, D or F, Division 3 major occupancy provided the members are, (i) not less than 1 m away from any unprotected opening in an exterior wall, or (ii) shielded from heat radiation in the event of a fire within the building
by construction that will provide the same degree of protection that would be necessary if the member was located inside the building, with the protection extending on either side of the member a distance equal to the projection of the member from the face of the wall.
Notes to Table 3.1.13.7.:
3.2.2.4. Buildings with Multiple Major Occupancies (1) The requirements restricting fire spread and collapse for a building of a single major occupancy
classification are provided in this Subsection according to its building height and building area. (2) If a building contains more than one major occupancy, classified in more than one Group or Division, the requirements of this Subsection concerning building
size and construction relative to major occupancy
shall apply according to Articles 3.2.2.5. to 3.2.2.8. (3) For the purposes of Sentences (1) and (2), a retirement home
is deemed to be a separate major occupancy.
Notes to Table 3.1.13.7.:
3.2.2.5. Applicable Building Height and Area (1) In determining the fire safety requirements of a building in relation to each of the major occupancies contained in it, the building height
and building area of the entire building shall be used. (2) For the purposes of Sentence (1), a retirement home is deemed to be a separate major occupancy.
Notes to Table 3.1.13.7.:
3.2.2.6. Multiple Major Occupancies (1) Except as permitted by Articles 3.2.2.7. and 3.2.2.8. and Sentences 3.2.2.42A.(4), 3.2.2.43A.(5), 3.2.2.49A.(3) and 3.2.2.50A.(4), in a building
containing more than one major occupancy, the requirements of this Subsection for the most restricted major occupancy contained shall apply to the whole building. (2) For the purposes of Sentence (1), a retirement home is deemed to be a separate major occupancy.
Notes to Table 3.1.13.7.:
3.2.2.7. Superimposed Major Occupancies (1) Except as permitted by Article 3.2.2.8. and Sentences 3.2.2.42A.(4), 3.2.2.43A.(5), 3.2.2.49A.(3) and 3.2.2.50A.(4), in a building
in which one major occupancy is located entirely above another major occupancy, the requirements in this Subsection for each portion of the building containing a major occupancy shall apply to that portion as if the entire building was of that major occupancy. (2) If one major occupancy is located above another major occupancy, the fire-resistance rating of the floor assembly between the major occupancies shall be determined on the basis of the requirements of this Subsection for the lower major occupancy. (3) For the purposes of Sentences (1) and (2), a retirement home
is deemed to be a separate major occupancy.
Notes to Table 3.1.13.7.:
3.2.2.8. Exceptions for Major Occupancies (1) In a building in which the aggregate area of all major occupancies in a particular Group or Division is not more than 10% of the floor area
of the storey in which they are located, these major occupancies need not be considered as major occupancies for the purposes of this Subsection, provided they are not classified as Group F, Division 1 or 2 occupancies. (1.1) For the purposes of Sentence (1), a retirement home is deemed to be a separate major occupancy. (2) A helicopter landing area on the roof of a building
need not be considered a major occupancy for purposes of Subsection 3.2.2. where such landing area is not more than 10% of the area of the roof.
Notes to Table 3.1.13.7.:
3.2.2.9. Crawl Spaces (1) For the purposes of Articles 3.2.1.4. and 3.2.1.5., a crawl space shall be considered as a basement if it is, (a) more than 1 800 mm high between the lowest part of the floor assembly and the ground or other surface below, (b) used for any occupancy, (c) used for the passage of flue pipes, or (d) used as a plenum
in combustible construction. (2) A floor assembly immediately above a crawl space is not required to be constructed as a fire separation and is not required to have a fire-resistance rating provided the crawl space is not required to be considered as a basement
by Sentence (1).
Notes to Table 3.1.13.7.:
3.2.2.10. Streets (1) Every building shall face a street located in conformance with the requirements of Articles 3.2.5.4 and 3.2.5.5 for access routes. (2) For the purposes of Subsections 3.2.2. and 3.2.5. an access route conforming to Subsection 3.2.5. is permitted to be considered as a street. (3) A building within the scope of Article 3.2.2.43A. or 3.2.2.50A. is considered to face one street, where, (a) not less than 25% of the building perimeter is located within 15 m of a street or streets, or (b) not less than 10% of the building perimeter is located within 15 m of a street or streets, provided the exterior cladding conforms to Sentence 3.1.4.8.(2). (4) A building is considered to face two streets
provided not less than 50% of the building
perimeter is located within 15 m of a street or streets. (5) A building is considered to face three
streets provided not less than 75% of the building
perimeter is located within 15 m of a street or streets. (6) Enclosed spaces, tunnels, bridges and similar structures, even though used for vehicular or pedestrian traffic, are not considered as streets
for the purpose of this Part.
Notes to Table 3.1.13.7.:
3.2.2.11. Exterior Balconies (1) Except as provided in Sentence (2), an exterior balcony shall be constructed in accordance with the type of construction required by Articles 3.2.2.20. to 3.2.2.83., as applicable to the occupancy
classification of the building. (2) The floor assembly of an exterior balcony in a building
or part of a building conforming to Article 3.2.2.42A. or 3.2.2.49A. shall, (a) be of noncombustible construction, or (b) be constructed in accordance with Article 3.1.6.3., but need not comply with Sentence 3.1.6.4.(1).
Notes to Table 3.1.13.7.:
3.2.2.12. Exterior Passageways (1) An elevated exterior passageway used as part of a means of egress shall conform to the requirements of Articles 3.2.2.20. to 3.2.2.83. for mezzanines.
Notes to Table 3.1.13.7.:
3.2.2.13. Occupancy on Roof (1) A portion of a roof that supports an occupancy
shall be constructed in conformance with the fire separation requirements of Articles 3.2.2.20. to 3.2.2.83. for floor assemblies.
Notes to Table 3.1.13.7.:
3.2.2.14. Rooftop Enclosures (1) A rooftop enclosure for elevator machinery or for a service room shall be constructed in accordance with the type of construction required by Articles 3.2.2.20. to 3.2.2.83. (2) A rooftop enclosure for elevator machinery or for a service room, not more than 1 storey
high, is not required to have a fire-resistance rating. (3) A rooftop enclosure for a stairway shall be constructed in accordance with the type of construction required by Articles 3.2.2.20. to 3.2.2.83. (4) A rooftop enclosure for a stairway need not have a fire-resistance rating nor be constructed as a fire separation.
Notes to Table 3.1.13.7.:
3.2.2.15. Storeys below Ground (1) If a building is erected entirely below the adjoining finished ground level and does not extend more than 1 storey below that ground level, the minimum precautions against fire spread and collapse shall be the same as are required for basements under a building of 1 storey in building height
having the same occupancy and building area. (2) If any portion of a building is erected entirely below the adjoining finished ground level and extends more than 1 storey below that ground level, the following minimum precautions against fire spread and collapse shall be taken: (a) except as permitted by Sentence (3), the basements shall be sprinklered, (b) a floor assembly below the ground level shall be constructed as a fire separation
with a fire-resistance rating not less than, (i) 3 h if the basements are intended for use as Group E or Group F, Division 1 or 2 occupancies, or (ii) 2 h if the basements are not intended for use as Group E or Group F, Division 1 or 2 occupancies, and (c) all loadbearing
walls, columns and arches shall have a fire-resistance rating not less than that required for the construction that they support. (3) If the first storey of a building is not required to be sprinklered, sprinklers are not required in the storey immediately below the first storey, provided the storey below, (a) contains only residential occupancies, and (b) has at least one unobstructed access opening conforming to Sentence 3.2.5.1.(2) installed on that storey for each 15 m of wall length in at least one wall required by this Subsection to face a street.
Notes to Table 3.1.13.7.:
3.2.2.16. Heavy Timber Roof Permitted (1) Unless otherwise permitted by Articles 3.2.2.20. to 3.2.2.83., a roof assembly in a building up to 2 storeys in building height is permitted to be of heavy timber construction regardless of building area or type of construction required, provided the building is sprinklered. (2) If Sentence (1) permits a roof assembly to be of heavy timber construction, structural members in the storey immediately below the roof assembly are permitted to be of heavy timber construction.
Notes to Table 3.1.13.7.:
3.2.2.17. Sprinklers in Lieu of Roof Rating (1) The requirements in Articles 3.2.2.20. to 3.2.2.83. for roof assemblies to have a fire-resistance rating are permitted to be waived provided, (a) except as provided by Sentence (2), the building is sprinklered, (b) the sprinkler system in Clause (a) is electrically supervised in conformance with Sentence 3.2.4.10.(3), and (c) the operation of the sprinkler system in Clause (a) will cause a signal to be transmitted to the fire department in conformance with Sentence 3.2.4.8.(4). (2) The fire-resistance rating of roof assemblies required by Clause 3.2.2.43A.(2)(b) or 3.2.2.50A.(2)(b) is not permitted to be waived.
Notes to Table 3.1.13.7.:
3.2.2.18. Automatic Sprinkler System Required (1) If an automatic sprinkler system is required by Articles 3.2.2.20. to 3.2.2.83., the system shall conform to the requirements of Articles 3.2.4.8. to 3.2.4.10. and 3.2.5.13.
Notes to Table 3.1.13.7.:
3.2.2.19. Buildings Containing Impeded Egress Zones (1) A building containing an impeded egress zone and conforming to the appropriate requirements of Articles 3.2.2.20. to 3.2.2.83. is not required to conform to the requirements of Articles 3.2.2.36. and 3.2.2.37. for a Group B, Division 1 major occupancy provided, (a) the building
is sprinklered, (b) it is not more than 1 storey in building height, (c) it does not include, (i) a contained use area, (ii) sleeping accommodation, (iii) a high hazard industrial occupancy, or (iv) a mercantile occupancy, (d) the building area is not more than 6 400 m2 if the building
includes a medium hazard industrial occupancy, (e) the impeded egress zone does not extend beyond the boundaries of the fire compartment in which it is located, and (f) the occupant load of the impeded egress zone is not more than 100.
Notes to Table 3.1.13.7.:
3.2.2.20. Group A, Division 1, Any Height, Any Area, Sprinklered (1) Except as permitted by Articles 3.2.2.21. and 3.2.2.22., a building classified as Group A, Division 1 shall conform to Sentence (2). (2) Except as permitted by Article 3.2.2.16., the building
referred to in Sentence (1) shall be of noncombustible construction, and, (a) except as permitted by Sentence 3.2.2.7.(1), the building shall be sprinklered, (b) floor assemblies shall be fire separations with a fire-resistance rating not less than 2 h, (c)  mezzanines
shall have a fire-resistance rating not less than 1 h, and (d)  loadbearing
walls, columns and arches shall have a fire-resistance rating not less than that required for the supported assembly.
Notes to Table 3.1.13.7.:
3.2.2.21. Group A, Division 1, 1 Storey, Limited Area (1) A building classified as Group A, Division 1 is permitted to conform to Sentence (2) provided, (a) it is not more than 1 storey in building height, (b) it has less than 40% of the area of the building as 2 storeys
for the purpose of, (i) development of productions including preparation of scenery and costumes and rehearsal of performers, (ii) organization of performers, scenery and sound equipment, (iii) preparation by performers for a performance, (iv) managerial functions, or (v) toilets, rest rooms and similar public facilities, (c) it has no occupancy
above or below the auditorium other than one that serves it or is dependent on it, (d) it is not more than 600 m2
in building area, and (e) the occupant load is not more than 600. (2) The building referred to in Sentence (1) is permitted to be of heavy timber construction or noncombustible construction used singly or in combination, and, (a) floor assemblies shall be fire separations, (i) with a fire-resistance rating not less than 45 min, or (ii) of
heavy timber construction, and (b)  loadbearing
walls, columns and arches shall, (i) have a fire-resistance rating not less than that required for the supported assembly, or (ii) be of heavy timber construction.
Notes to Table 3.1.13.7.:
3.2.2.22. Group A, Division 1, 1 Storey (1) A building classified as Group A, Division 1 is permitted to conform to Sentence (2) provided, (a) it is not more than 1 storey in building height, (b) no part of an auditorium floor is more than 5 m above or below grade, (c) no occupancy
is above or below the auditorium other than one that serves it or is dependent on it, and (d) the occupant load of the auditorium floor is not more than 300. (2) The building referred to in Sentence (1) is permitted to be of combustible construction or noncombustible construction used singly or in combination, and, (a) floor assemblies shall be fire separations with a fire-resistance rating not less than 45 min, (b)  mezzanines
shall have, if of combustible construction, a fire-resistance rating not less than 45 min, (c) roof assemblies shall have, if of
combustible construction, a fire-resistance rating not less than 45 min, and (d)  loadbearing
walls, columns and arches supporting an assembly required to have a fire-resistance rating shall, (i) have a fire-resistance rating not less than 45 min, or (ii) be of noncombustible construction, and (e)  loadbearing
walls, columns and arches supporting a fire separation
shall have a fire-resistance rating not less than that required for the fire separation.