Division B
Acceptable Solutions

Part 9 — Housing and Small Buildings

Section 9.10. Fire Protection

9.10.1. Definitions and Application

9.10.1.1. Sloped Roofs

1) For the purposes of this Section, roofs with slopes of 60° or more to the horizontal that are adjacent to a room or space intended for occupancy shall be considered as a wall.

9.10.1.2. Commissioning of Life Safety and Fire Protection Systems

1) Where life safety and fire protection systems are installed to comply with the provisions of this By-law or the Fire By-law, the commissioning of these integrated systems must be performed as a whole to ensure the proper operation and inter-relationship of the systems. (See A-3.2.4.6.(1) in Appendix A.)

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1) Where life safety and fire protection systems are installed to comply with the provisions of this By-lawCode or the British Columbia Fire By-lawCode, the commissioning of these integrated systems must be performed as a whole to ensure the proper operation and inter-relationship of the systems. (See A-3.2.4.6.(1) in Appendix A.)

1) Where life safety and fire protection systems are installed to comply with the provisions of this By-lawCode or the Fire By-law NFC, the commissioning of these integrated systems must be performed as a whole to ensure the proper operation and inter-relationship of the systems. (See A-3.2.4.6.(1) in Appendix A.)

9.10.1.3. Items under Part 3 Jurisdiction

1) Tents, air-supported structures, transformer vaults, walkways, elevators and escalators shall conform to Part 3.

2) Where rooms or spaces are intended for an assembly occupancy, such rooms or spaces shall conform to Part 3.

3) Basements containing more than 1 storey or exceeding 600 m² in area shall conform to Part 3.

4) Where rooms or spaces are intended for the storage, manufacture or use of hazardous or explosive material, such rooms or spaces shall conform to Part 3. (See A-3.3.1.2.(1) in Appendix A.)

5) Except as provided in Article 3.3.5.8., facilities for the dispensing of fuel shall not be installed in any building.

6) Openings through floors that are not protected by shafts or closures shall be protected in conformance with Subsection 3.2.8. (See also Sentence 9.9.4.7.(1).)

7) Chutes and shafts shall conform to Subsection 3.6.3. except where they are entirely contained within a dwelling unit.

8) Sprinkler systems shall be designed, constructed and installed in conformance with Articles 3.2.5.12. to 3.2.5.15. and 3.2.5.17.

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8) Sprinkler systemsSprinklersystems shall be designed, constructed and installed in conformance with Articles 3.2.5.12. to 3.2.5.15. and 3.2.5.17.

9) Standpipe and hose systems shall be designed, constructed and installed in conformance with Articles 3.2.5.8. to 3.2.5.11. and 3.2.5.17.

10) Fire pumps shall be installed in conformance with Articles 3.2.5.17. and 3.2.5.18.

11) Where fuel-fired appliances are installed on a roof, such appliances shall be installed in conformance with Article 3.6.1.4.

9.10.1.4. Items under Part 6 Jurisdiction

1) In kitchens containing commercial cooking equipment used in processes producing grease-laden vapours, the equipment shall be designed and installed in conformance with Article 6.2.2.7. (See Appendix A.)

9.10.2. Occupancy Classification

9.10.2.1. Occupancy Classification

1) Except as provided in Article 9.10.2.2., every building or part thereof shall be classified according to its major occupancy as belonging to one of the groups or divisions described in Table 9.10.2.1.

9.10.2.2. Custodial, Convalescent and Residential Care Homes

1) Children's custodial homes and convalescent homes for ambulatory occupants living as a single housekeeping unit in a dwelling unit with sleeping accommodation for not more than 10 persons are permitted to be classified as Group C, residential occupancies.

2) A care facility accepted for residential use pursuant to provincial legislation is permitted to be classified as a residential occupancy provided

a) the occupants live as a single housekeeping unit in a dwelling unit with sleeping accommodation for not more than 10 persons,

b) interconnected smoke alarms are installed in each sleeping room in addition to the requirements of Article 9.10.19.2.,

c) emergency lighting is provided in conformance with Article 9.9.12.3., and

d) the building is sprinklered throughout.

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9.10.2.2. Custodial, Convalescent and Residential Care HomesCustodial and Convalescent Homes

1) Children's custodial homes and convalescent homes for ambulatory occupants living as a single housekeeping unit in a dwelling unit with sleeping accommodation for not more than 10 persons are permitted to be classified as Group C, residential occupanciesresidential occupancies
(Group C).

2) A care facility accepted for residential use pursuant to provincial legislation is permitted to be classified as a residential occupancy provided

a) the occupants live as a single housekeeping unit in a dwelling unit with sleeping accommodation for not more than 10 persons,

b) interconnected smoke alarms are installed in each sleeping room in addition to the requirements of Article 9.10.19.2.,

c) emergency lighting is provided in conformance with Article 9.9.12.3., and

d) the building is sprinklered throughout.

9.10.2.3. Group A, Division 2, Low Occupant Load

1) This Part may apply to a Group A, Division 2 assembly occupancy that is permitted by Article 3.1.2.6. to be classified as Group D, business and personal services occupancy, provided the building in which the assembly occupancy is located complies with Sentence 1.3.3.3.(1) of Division A.

9.10.2.4. Major Occupancies above Other Major Occupancies

1) Except as permitted in Article 9.10.2.5., in any building containing more than one major occupancy in which one major occupancy is located entirely above another, the requirements of Article 9.10.8.1. for each portion of the building containing a major occupancy shall be applied to that portion as if the entire building was of that major occupancy.

9.10.2.5. Buildings Containing More Than One Major Occupancy

1) In a building containing more than one major occupancy, where the aggregate area of all major occupancies in a particular group or division does not exceed 10 per cent of the floor area on the storey on which they are located, they need not be considered as major occupancies for the purposes of Articles 9.10.8.1. and 9.10.2.4. provided they are not classified as Group F, Division 2 occupancies.

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1) In a building containing more than one major occupancy, where the aggregate area of all major occupancies in a particular group or division does not exceed 10 per cent 10% of the floor area on the storey on which they are located, they need not be considered as major occupancies for the purposes of Articles 9.10.8.1. and 9.10.2.4. provided they are not classified as Group F, Division 2 occupancies.

9.10.3. Ratings

9.10.3.1. Fire-Resistance and Fire-Protection Ratings

1) Where a fire-resistance rating or a fire-protection rating is required in this Section for an element of a building, such rating shall be determined in conformance with the test methods described in Part 3, A-9.10.3.1. in Appendix A, or Appendix D.

9.10.3.2. Flame-Spread Ratings

1) Where a flame-spread rating is required in this Section for an element of a building, such rating shall be determined in accordance with the test methods described in Part 3, or in accordance with Appendix D.

2) Unless the flame-spread rating is referred to herein as a “surface flame-spread rating,” it shall apply to any surface of the element being considered that would be exposed by cutting through it as well as to the exposed surface of the element.

9.10.3.3. Fire Exposure

1) Floor, roof and ceiling assemblies shall be rated for exposure to fire on the underside.

2) Exterior walls shall be rated for exposure to fire from inside the building, except that such walls need not comply with the temperature rise limitations required by the standard tests referred to in Article 9.10.3.1., if such walls have a limiting distance of not less than 1.2 m, and due allowance is made for the effects of heat radiation in accordance with the requirements in Part 3.

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2) Exterior walls shall be rated for exposure to fire from inside the building, except that such walls need not comply with the temperature rise limitations required by the standard tests referred to in Article 9.10.3.1., if such walls have a limiting distance of not less than 1.2 m, and due allowance is made for the effects of heat radiation in accordance with the requirements in Part 3.

3) Interior vertical fire separations required to have fire-resistance ratings shall be rated for exposure to fire on each side.

9.10.3.4. Suspended Membrane Ceilings

1) Where a ceiling construction has a suspended membrane ceiling with lay-in panels or tiles which contribute to the required fire-resistance rating, hold down clips or other means shall be provided to prevent the lifting of such panels or tiles in the event of a fire.

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1) Where a ceiling constructionconstruction has a suspended membrane ceiling with lay-in panels or tiles which contribute to the required fire-resistance rating, hold down clips or other means shall be provided to prevent the lifting of such panels or tiles in the event of a fire.

9.10.4. Building Size Determination

9.10.4.1. Mezzanines not Considered as Storeys

1) Except as required by Sentences (2) and 9.10.4.2.(1), the space above a mezzanine is permitted to be excluded from the calculation of building height, provided

a) the aggregate area of mezzanines that are not superimposed does not exceed 10 per cent of the floor area of the building in which they are located, and

b) the area of mezzanine in a suite does not exceed 10 per cent of the area of that suite on the storey on which it is located.

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1) Except as required by Sentences (2) and 9.10.4.2.(1), the space above a mezzanine is permitted to be excluded from the calculation of building height, provided

a) the aggregate area of mezzanines that are not superimposed does not exceed 10 per cent 10% of the floor area of the building in which they are located, and

b) the area of mezzanine in a suite does not exceed 10 per cent 10% of the area of that suite on the storey on which it is located.

2) Except as provided in Sentence 9.10.4.2.(1), a mezzanine need not be considered as a storey in calculating the building height provided

a) not less than 60 per cent of the horizontal plane separating the mezzanine from the room or floor space in which it is located is open, and

b) except from within enclosures described in Sentence (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.

(See Appendix Note A-3.2.1.1.(3).)

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2) Except as provided in Sentence 9.10.4.2.(1), a mezzanine need not be considered as a storey in calculating the building height provided

a) not less than 60 per cent60% of the horizontal plane separating the mezzanine from the room or floor space in which it is located is open, and

b) except from within enclosures described in Sentence (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.

(See Appendix Note A-3.2.1.1.(3).)

2) Except as provided inrequired bySentence 9.10.4.2.(1), the space above a mezzanineneed not be considered as a storey in calculating the is permitted to be excluded from the calculation of building height, provided

a) not less than 60 per cent of the horizontal plane separating the mezzanine from the room or floor space in which it is located is open, andthe aggregate area of mezzanines that are not superimposed does not exceed 40% of the open area of the room in which they are located (see A-3.2.1.1.(3) in Appendix A), and

b) except from within enclosures described as permitted in Sentence (3), the space above the mezzaninefloor is used as an open area without partitionspartitions or subdividing walls higher than 1 070 mm1 070 mm above the mezzanine floor.

(See Appendix Note A-3.2.1.1.(3).)

3) The space above a mezzanine conforming to Sentence (2) is permitted to include an enclosed space whose area does not exceed 10 per cent 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.

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3) The space above a mezzanine conforming to Sentence (2) is permitted to include an enclosed space whose area does not exceed 10 per cent 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.

4) For the purpose of determining occupant load, the areas of mezzanines that are not considered as storeys shall be added to the floor area of the storey on which they are located. (See Appendix A.)

5) Platforms and catwalks intended solely for periodic inspection and maintenance need not be considered as floor assemblies or mezzanines for the purpose of calculating building height, provided

a) they are not used for storage, and

b) they are constructed with noncombustible materials, unless the building is permitted to be of combustible construction.

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5) Platforms and catwalks intended solely for periodic inspection and maintenance need not be considered as floor assemblies or mezzanines for the purpose of calculating building height, provided

a) they are not used for storage, and

b) they are constructed with noncombustible materials, unless the building is permitted to be of combustible construction construction.

9.10.4.2. More Than One Level of Mezzanine

1) 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.

9.10.4.3. Basement Storage Garages

1) Where a basement is used primarily as a storage garage, the basement is permitted to be considered as a separate building for the purposes of this Section provided the floor above the basement and the exterior walls of the basement above the adjoining ground level are constructed as fire separations of masonry or concrete having a fire-resistance rating of not less than 2 h, except as permitted by Sentences 3.2.1.2.(2) and (3).

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1) Where a basement is used primarily as a storage garage, the basement is permitted to be considered as a separate building for the purposes of this Section provided the floor above the basement and the exterior walls of the basement above the adjoining ground level are constructed as fire separations of masonry or concrete having a fire-resistance rating of not less than 2 h, except as permitted by Sentences 3.2.1.2.(2) and (3).

9.10.4.4. Roof-Top Enclosures

1) A roof-top enclosure shall not be considered as a storey in calculating the building height if the roof-top enclosure is

a) provided for elevator machinery, a stairway or a service room, and

b) used for no purpose other than for service to the building.

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1) A roof-top enclosure Roof-top enclosures provided for elevator machinery, stairways and service rooms, used for no purpose other than for service to the building, shall not be considered as a storey in calculating the building height if the roof-top enclosure is.

a) provided for elevator machinery, a stairway or a service room, and

b) used for no purpose other than for service to the building.

9.10.5. Permitted Openings in Wall and Ceiling Membranes

9.10.5.1. Permitted Openings in Wall and Ceiling Membranes

1) Except as permitted in Sentences (2) and (4), a membrane forming part of an assembly required to have a fire-resistance rating shall not be pierced by openings into the assembly unless the assembly has been tested and rated for such openings.

2) A wall or ceiling membrane forming part of an assembly required to have a fire-resistance rating is permitted to be pierced by openings for electrical and similar service outlet boxes provided such outlet boxes are tightly fitted.

3) Where boxes referred to in Sentence (2) are located on both sides of walls required to provide a fire-resistance rating, they shall be offset where necessary to maintain the integrity of the fire separation.

4) A membrane ceiling forming part of an assembly assigned a fire-resistance rating on the basis of Table A-9.10.3.1.B or Appendix D, is permitted to be pierced by openings leading to ducts within the ceiling space provided the ducts, the amount of openings and their protection conform to the requirements of Appendix D.

9.10.6. Construction Types

9.10.6.1. Combustible Elements in Noncombustible Construction

1) Where a building or part of a building is required to be of noncombustible construction, combustible elements shall be limited in conformance with the requirements in Subsection 3.1.5.

9.10.6.2. Heavy Timber Construction

1) Heavy timber construction shall be considered to have a 45 min fire-resistance rating when it is constructed in accordance with the requirements for heavy timber construction in Article 3.1.4.7.

9.10.7. Steel Members

9.10.7.1. Protection of Steel Members

1) Except as permitted in Article 3.2.2.3., structural steel members used in construction required to have a fire-resistance rating shall be protected to provide the required fire-resistance rating.

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1) Except as permitted in Article 3.2.2.3., structural steel members used in constructionconstruction required to have a fire-resistance rating shall be protected to provide the required fire-resistance rating.

9.10.8. Fire Resistance and Combustibility in Relation to Occupancy, Height and Supported Elements

9.10.8.1. Fire-Resistance Ratings for Floors and Roofs

1) Except as otherwise provided in this Subsection, the fire-resistance ratings of floors and roofs shall conform to Table 9.10.8.1. (See Subsection 9.10.2. for mixed occupancies and Subsection 9.10.21. for construction camps.)

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1) Except as otherwise provided in this Subsection, the fire-resistance ratings of floors and roofs shall conform to Table 9.10.8.1. (See Subsection 9.10.2. for mixed occupancies and Subsection 9.10.21. for constructionconstruction camps.)

9.10.8.2. Fire-Resistance Ratings in Sprinklered Buildings

1) The requirements in Table 9.10.8.1. for roof assemblies to have a fire-resistance rating are permitted to be waived in sprinklered buildings where

a) the sprinkler system is electrically supervised in conformance with Sentence 3.2.4.10.(3), and

b) the operation of the sprinkler system will cause a signal to be transmitted to the fire department in conformance with Sentence 3.2.4.8.(4).

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1) The requirements in Table 9.10.8.1. for roof assemblies to have a fire-resistance rating are permitted to be waived in sprinklered buildings where

a) the sprinkler systemsprinklersystem is electrically supervised in conformance with Sentence 3.2.4.10.(3), and

b) the operation of the sprinkler systemsprinklersystem will cause a signal to be transmitted to the fire department in conformance with Sentence 3.2.4.8.(4).

9.10.8.3. Fire-Resistance Ratings for Walls, Columns and Arches

1) Except as otherwise provided in this Subsection, all loadbearing walls, columns and arches in the storey immediately below a floor or roof assembly shall have a fire-resistance rating of not less than that required for the supported floor or roof assembly.

2) Reserved.

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2) Reserved.Light-frame walls, columns, arches and beams as well as loadbearing steel elements that support floors between dwelling units in a house with a secondary suite including their common spaces shall be protected by not less than 12.7 mm thick gypsum board. (See Appendix A.)

9.10.8.4. Support of Noncombustible Construction

1) Where an assembly is required to be of noncombustible construction and to have a fire-resistance rating, it shall be supported by noncombustible construction.

9.10.8.5. Service Rooms

1) Construction supporting a service room need not conform to Article 9.10.8.3.

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1) ConstructionConstruction supporting a service room need not conform to Article 9.10.8.3.

9.10.8.6. Mezzanines

1) Mezzanines required to be counted as storeys in Articles 9.10.4.1. and 9.10.4.2. shall be constructed in conformance with the requirements for “Floors Except Floors over Crawl Spaces” in Table 9.10.8.1.

9.10.8.7. Roofs Supporting an Occupancy

1) Where a portion of a roof supports an occupancy, that portion shall be constructed as a fire separation having a fire-resistance rating conforming to the rating for “Floors Except Floors over Crawl Spaces” in Table 9.10.8.1.

9.10.8.8. Floors of Exterior Passageways

1) Except as provided in Sentences (2) and (3), the floor assembly of every exterior passageway used as part of a means of egress shall have a fire-resistance rating of not less than 45 min or be of noncombustible construction.

2) No fire-resistance rating is required for floors of exterior passageways serving buildings of Group D, E or F major occupancy that are not more than 2 storeys in building height.

3) No fire-resistance rating is required for floors of exterior passageways serving a single dwelling unit where no suite is located above or below the dwelling unit.

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3) No fire-resistance rating is required for floors of exterior passageways serving a single dwelling unit where no suite is located above or below the dwelling unit.

a) a house with a secondary suite, or

b) a single dwelling unit where no suite is located above or below the dwelling unit (see also Sentence 9.9.9.3.(2)).

9.10.8.9. Crawl Spaces

1) Where a crawl space exceeds 1.8 m in height or is used for any occupancy or as a plenum in combustible construction or for the passage of flue pipes, it shall be considered as a basement in applying the requirements in Article 9.10.8.1.

9.10.8.10. Application to Houses

1) Table 9.10.8.1. does not apply to a dwelling unit that has no other dwelling unit above or below it, or to a dwelling unit that is not above or below another major occupancy.

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1) Table 9.10.8.1. does not apply to a dwelling unit that has no other dwelling unit above or below it, or to a dwelling unit that is not above or below another major occupancy.

a) a dwelling unit that has no other dwelling unit above or below it,

b) houses with a secondary suite, where the floor framing is protected on the underside by a continuous smoke-tight barrier of not less than 12.7 mm thick gypsum board, or

c) a dwelling unit that is not above or below another major occupancy.

9.10.8.11. Part 3 as an Alternative

1) The fire-resistance ratings of floors, roofs, loadbearing walls, columns and arches need not conform to this Subsection if such assemblies conform in all respects to the appropriate requirements in Section 3.2.

9.10.9. Fire Separations between Rooms and Spaces within Buildings

9.10.9.1. Application

1) This Subsection applies to fire separations required between rooms and spaces in buildings, except between rooms and spaces within a dwelling unit.

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1) This Subsection applies tofire separations required between rooms and spaces in buildings, except between rooms and spaces within a dwelling unit.

a) fire separations required between rooms and spaces in buildings, and

b) smoke-tight barriers required in houses with a secondary suite including their common spaces.

9.10.9.2. Continuous Barrier

1) Except as permitted in Article 9.10.9.3., a wall or floor assembly required to be a fire separation shall be constructed as a continuous barrier against the spread of fire and retard the passage of smoke.

2) Reserved.

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2) Reserved.Except as permitted in Article 9.10.9.3., a wall or floor assembly required to be a smoke-tight barrier shall be constructed as a continuous barrier against the spread of smoke.

3) 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. (See A-3.1.8.3.(4).)

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3) The continuity of a fire separation or smoke-tight barrier shall be maintained where it abuts another fire separation or smoke-tight barrier, a floor, a ceiling, a roof, or an exterior wall assembly. (See Appendix A and A-3.1.8.3.(4).) in Appendix A.)

4) Reserved.

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4) Reserved.All gypsum board joints in the assemblies described in Sentences (1)and (2) shall conform to CSA A82.31-M, “Gypsum Board Application,” and penetrations in these assemblies shall be sealed using flexible sealant or tape to maintain the integrity of the smoke -tight barrier over the entire surface.

9.10.9.3. Openings to be Protected with Closures

1) Except as permitted in Articles 9.10.9.5., 9.10.9.6. and 9.10.9.7., openings in required fire separations shall be protected with closures conforming to Subsection 9.10.13.

2) Reserved.

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2) Reserved.Doors in smoke-tight barriers shall

a) be solid-core, wood doors at least 45 mm thick, and

b) have a self-closing device.

(See Appendix A.)

9.10.9.4. Floor Assemblies

1) Except as permitted in Sentences (2) to (4), all floor assemblies shall be constructed as fire separations.

2) Floor assemblies contained within dwelling units need not be constructed as fire separations.

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2) Floor assemblies contained within dwelling unitsand within houses with a secondary suiteneed not be constructed as fire separations.

3) Floor assemblies for which no fire-resistance rating is required by Subsection 9.10.8. and floors of mezzanines not required to be counted as storeys in Articles 9.10.4.1. and 9.10.4.2. need not be constructed as fire separations.

4) Where a crawl space is not required by Article 9.10.8.9. to be constructed as a basement, the floor above it need not be constructed as a fire separation.

9.10.9.5. Interconnected Floor Spaces

1) Interconnected floor spaces shall conform to Subsection 3.2.8.

9.10.9.6. Penetration of Fire Separations

1) Piping, tubing, ducts, chimneys, wiring, conduit, electrical outlet boxes and other similar service equipment that penetrate a required fire separation shall be tightly fitted or fire stopped to maintain the integrity of the separation. (See Appendix A.)

2) Penetrations of a firewall shall be sealed at the penetration by a fire stop that, when subjected to the fire test method in CAN/ULC-S115, “Fire Tests of Firestop Systems,” has an FT rating not less than the fire-resistance rating for the fire separation.

3) Except as provided in Sentences (4) to (12) and Article 9.10.9.7., pipes, ducts, electrical boxes, totally enclosed raceways or other similar service equipment that partly or wholly penetrate an assembly required to have a fire-resistance rating shall be noncombustible unless the assembly has been tested incorporating such equipment. (See A-3.1.9.2.(1) in Appendix A.)

4) Electrical wires or similar wiring enclosed in noncombustible totally enclosed raceways are permitted to partly or wholly penetrate an assembly required to have a fire-resistance rating without being incorporated in the assembly at the time of testing as required in Sentence (3).

5) Single conductor metal-sheathed cables with combustible jacketting that are more than 25 mm in overall diameter are permitted to penetrate a fire separation required to have a fire-resistance rating without being incorporated in the assembly at the time of testing as required in Sentence (2), provided the cables are not grouped and are spaced a minimum of 300 mm apart.

6) Electrical wires or cables, single or grouped, with combustible insulation or jacketting that is not totally enclosed in raceways of noncombustible material, are permitted to partly or wholly penetrate an assembly required to have a fire-resistance rating without being incorporated in the assembly at the time of testing as required in Sentence (3), provided the overall diameter of the wiring is not more than 25 mm.

7) Combustible totally enclosed raceways which are embedded in a concrete floor slab are permitted in an assembly required to have a fire-resistance rating without being incorporated in the assembly at the time of testing as required in Sentence (3), where the concrete provides not less than 50 mm of cover between the raceway and the bottom of the slab.

8) Combustible outlet boxes are permitted in an assembly required to have a fire-resistance rating without being incorporated in the assembly at the time of testing as required in Sentence (3), provided the opening through the membrane into the box does not exceed 160 cm².

9) Combustible water distribution piping is permitted to partly or wholly penetrate a fire separation that is required to have a fire-resistance rating without being incorporated in the assembly at the time of testing as required in Sentence (3), provided the piping is protected with a fire stop in conformance with Sentence 3.1.9.4.(4).

10) Combustible sprinkler piping is permitted to penetrate a fire separation provided the fire compartments on each side of the fire separation are sprinklered.

11) Sprinklers are permitted to penetrate a fire separation or a membrane forming part of an assembly required to have a fire-resistance rating without having to meet the fire stop requirements of Sentence (1), provided the annular space created by the penetration of a fire sprinkler is covered by a metal escutcheon plate in accordance with NFPA 13, “Installation of Sprinkler Systems.”

12) Combustible piping for central vacuum systems is permitted to penetrate a fire separation provided the installation conforms to the requirements that apply to combustible drain, waste and vent piping specified in Sentences 9.10.9.7.(2) to (6).

13) Fire dampers are permitted to penetrate a fire separation or a membrane forming part of an assembly required to have a fire-resistance rating without having to meet the fire stop requirements of Sentence (1), provided the fire damper is

a) installed in conformance with NFPA 80, “Fire Doors and Other Opening Protectives,” or

b) specifically designed with a fire stop.

9.10.9.7. Combustible Drain, Waste and Vent Piping

1) Except as permitted in Sentences (2) to (6), combustible piping shall not be used in any part of a drain, waste and vent piping system where any part of that system partly or wholly penetrates a fire separation required to have a fire-resistance rating or penetrates a membrane that contributes to the required fire-resistance rating of an assembly.

2) Combustible drain, waste and vent piping not located in a vertical shaft is permitted to penetrate a fire separation required to have a fire-resistance rating or a membrane that forms part of an assembly required to have a fire-resistance rating provided the piping is sealed at the penetration by a fire stop that has an F rating not less than the fire-resistance rating required for the fire separation.

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2) Combustible drain, waste and vent piping not located in a vertical shaft is permitted to penetrate a fire separation required to have a fire-resistance rating or a membrane that forms part of an assembly required to have a fire-resistance rating provided the piping is sealed at the penetration by a fire stopfirestopsystem that has an F rating not less than the fire-resistance rating required for the fire separation.

3) The rating referred to in Sentence (2) shall be based on CAN/ULC-S115, “Fire Tests of Firestop Systems,” with a pressure differential of 50 Pa between the exposed and unexposed sides, with the higher pressure on the exposed side.

4) Combustible drain piping is permitted to penetrate a horizontal fire separation or a membrane that contributes to the required fire-resistance rating of a horizontal fire separation, provided it leads directly from a noncombustible watercloset through a concrete floor slab.

5) Combustible drain, waste and vent piping is permitted on one side of a vertical fire separation provided it is not located in a vertical shaft.

6) In buildings containing 2 dwelling units only, combustible drain, waste and vent piping is permitted on one side of a horizontal fire separation.

9.10.9.8. Collapse of Combustible Construction

1) Combustible construction that abuts on or is supported by a noncombustible fire separation shall be constructed so that its collapse under fire conditions will not cause collapse of the fire separation.

9.10.9.9. Reduction in Thickness of Fire Separation by Beams and Joists

1) Where pockets for the support of beams or joists are formed in a masonry or concrete fire separation, the remaining total thickness of solid masonry and/or grout and/or concrete shall be not less than the required equivalent thickness shown for Type S monolithic concrete in Table D-2.1.1. in Appendix D for the required fire-resistance rating.

9.10.9.10. Concealed Spaces above Fire Separations

1) Except as provided in Sentence (2), a horizontal service space or other concealed space located above a required vertical fire separation shall be divided at the fire separation by an equivalent fire separation within the space.

2) Where a horizontal service space or other concealed space is located above a required vertical fire separation other than a vertical shaft, such space need not be divided as required in Sentence (1) provided the construction between such space and the space below is constructed as a fire separation having a fire-resistance rating not less than that required for the vertical fire separation, except that where the vertical fire separation is not required to have a fire-resistance rating greater than 45 min, the fire-resistance rating of the ceiling may be reduced to 30 min.

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2) Where a horizontal service space or other concealed space is located above a required vertical fire separation other than a vertical shaft, such space need not be divided as required in Sentence (1) provided the constructionconstruction between such space and the space below is constructed as a fire separation having a fire-resistance rating not less than that required for the vertical fire separation, except that where the vertical fire separation is not required to have a fire-resistance rating greater than 45 min, the fire-resistance rating of the ceiling may be reduced to 30 min.

9.10.9.11. Separation of Residential Occupancies

1) Except as provided in Sentence (2), residential occupancies shall be separated from all other major occupancies by a fire separation having a fire-resistance rating of not less than 1 h.

2) Except as provided in Sentence (3), a major occupancy classified as a residential occupancy shall be separated from other major occupancies classified as mercantile or medium-hazard industrial occupancies by a fire separation having a fire-resistance rating of not less than 2 h.

3) Where not more than 2 dwelling units are located in a building containing a mercantile occupancy, such mercantile occupancy shall be separated from the dwelling units by a fire separation having not less than 1 h fire-resistance rating.

9.10.9.12. Residential Suites in Industrial Buildings

1) Not more than one suite of residential occupancy shall be contained within a building classified as a Group F, Division 2 major occupancy.

9.10.9.13. Separation of Suites

1) Except as required in Article 9.10.9.14. and as permitted by Sentence (2) and (3), a suite shall be separated from adjoining suites by a fire separation having a fire-resistance rating of not less than 45 min.

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1) Except as required in Article 9.10.9.14. and as permitted by Sentence (2) and (3), aeachsuitein other than business and personal services occupanciesshall be separated from adjoining suites by a fire separation having a fire-resistance rating of not less than 45 min.

2) In sprinklered buildings, suites of business and personal services occupancy and mercantile occupancy that are served by public corridors conforming with Clause 3.3.1.4.(4)(b) are not required to be separated from each other by fire separations.

3) No fire separation is required between suites of business and personal services occupancy.

9.10.9.14. Separation of Residential Suites

1) Except as provided in Sentences (2), and (3) and Article 9.10.21.2., suites in residential occupancies shall be separated from adjacent rooms and suites by a fire separation having a fire-resistance rating of not less than 45 min.

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1) Except as provided in Sentences (2), , (3)and (3) and Article 9.10.21.2., suites in residential occupancies shall be separated from adjacent rooms and suites by a fire separation having a fire-resistance rating of not less than 45 min.

2) Sleeping rooms in boarding and lodging houses where sleeping accommodation is provided for not more than 8 boarders or lodgers need not be separated from the remainder of the floor area as required in Sentence (1) where the sleeping rooms form part of the proprietor's residence and do not contain cooking facilities.

3) Dwelling units that contain 2 or more storeys including basements shall be separated from the remainder of the building by a fire separation having a fire-resistance rating of not less than 1 h. (See A-3.3.4.4.(1) in Appendix A.)

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3) Except as provided in Sentence (4), Dwellingdwelling units that contain 2 or more storeys including basements shall be separated from the remainder of the building by a fire separation having a fire-resistance rating of not less than 1 h. (See A-3.3.4.4.(1) in Appendix A.)

4) Reserved.

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4) Reserved.Walls and floor-ceiling framing in a house with a secondary suite that separate dwelling units from each other or dwelling units from ancillary spaces and common spaces need not comply with Sentence (1), where the walls and floor-ceiling framing are protected by a continuous smoke-tight barrier of not less than 12.7 mm thick gypsum board installed on

a) both sides of walls, and

b) the underside of floor-ceiling framing.

(See Sentence 9.10.9.3.(2) for closures.)

9.10.9.15. Separation of Public Corridors

1) Except as provided in Sentences (2) and (3), public corridors shall be separated from the remainder of the building by a fire separation having not less than a 45 min fire-resistance rating.

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1) Except as provided in Sentences (2) and (3) and (4), public corridors shall be separated from the remainder of the building by a fire separation having not less than a 45 min fire-resistance rating.

2) In other than residential occupancies, no fire-resistance rating is required for fire separations between a public corridor and the remainder of the building if

a) the floor area is sprinklered,

b) the sprinkler system is electrically supervised in conformance with Sentence 3.2.4.10.(3), and

c) the operation of the sprinkler system will cause a signal to be transmitted to the fire department in conformance with Sentence 3.2.4.8.(4).

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2) In other than residential occupancies, no fire-resistance rating is required for fire separations between a public corridor and the remainder of the building if

a) the floor area is sprinklered,

b) the sprinkler systemsprinklersystem is electrically supervised in conformance with Sentence 3.2.4.10.(3), and

c) the operation of the sprinkler systemsprinklersystem will cause a signal to be transmitted to the fire department in conformance with Sentence 3.2.4.8.(4).

3) In other than residential occupancies, no fire separation is required between a public corridor and the remainder of the building if

a) the floor area is sprinklered,

b) the sprinkler system is electrically supervised in conformance with Sentence 3.2.4.10.(3),

c) the operation of the sprinkler system will cause a signal to be transmitted to the fire department in conformance with Sentence 3.2.4.8.(4), and

d) the corridor exceeds 5 m in width.

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3) In other than residential occupancies, no fire separation is required between a public corridor and the remainder of the building if

a) the floor area is sprinklered,

b) the sprinkler systemsprinklersystem is electrically supervised in conformance with Sentence 3.2.4.10.(3),

c) the operation of the sprinkler systemsprinklersystem will cause a signal to be transmitted to the fire department in conformance with Sentence 3.2.4.8.(4), and

d) the corridor exceeds 5 m in width.

4) Reserved.

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4) Reserved.Where a public corridor is located in a house with a secondary suite, a continuous smoke-tight barrier of not less than 12.7 mm thick gypsum board shall be installed on

a) both sides of walls separating the corridor from the remainder of the building, and

b) the underside of floor-ceiling framing separating the corridor from the remainder of the building.

(See Sentence 9.10.9.3.(2) for closures.)

9.10.9.16. Separation of Storage Garages

1) Except as provided in Sentences (2) and (3), a storage garage shall be separated from other occupancies by a fire separation having not less than a 1.5 h fire-resistance rating.

2) Except as permitted in Sentence (3), storage garages containing 5 motor vehicles or fewer shall be separated from other occupancies by a fire separation of not less than 1 h.

3) Where a storage garage serves only the dwelling unit to which it is attached or in which it is built, it shall be considered as part of that dwelling unit and the fire separation required in Sentence (2) need not be provided between the garage and the dwelling unit.

4) Except as provided in Sentence (5), where a storage garage is attached to or built into a building of residential occupancy,

a) an air barrier system conforming to Subsection 9.25.3. shall be installed between the garage and the remainder of the building to provide an effective barrier to gas and exhaust fumes, and

b) every door between the garage and the remainder of the building shall conform to Article 9.10.13.15.

(See Appendix A.)

5) Where membrane materials are used to provide the required airtightness in the air barrier system, all joints shall be sealed and structurally supported.

9.10.9.17. Separation of Repair Garages

1) Except as provided in Sentences (2) and (3), a repair garage shall be separated from other occupancies by a fire separation having a fire-resistance rating of not less than 2 h.

2) Ancillary spaces directly serving a repair garage, including waiting rooms, reception rooms, tool and parts storage areas and supervisory office space, need not be separated from the repair garage but shall be separated from other occupancies as required in Sentence (1).

3) The fire separation referred to in Sentence (1) shall have a fire-resistance rating of not less than 1 h, where

a) the building is not more than one storey in building height,

b) the building is operated as a single suite, and

c) the only occupancy other than the repair garage is a mercantile occupancy.

4) Except as provided in Sentence (5), where a building containing a repair garage also contains a dwelling unit, an air barrier system conforming to Subsection 9.25.3. shall be installed between the dwelling unit and the suite containing the garage to provide an effective barrier to gas and exhaust fumes. (See A-9.10.9.16.(4) in Appendix A.)

5) Where membrane materials are used to provide the required airtightness in the air barrier system, all joints shall be sealed and structurally supported.

9.10.9.18. Exhaust Ducts Serving More Than One Fire Compartment

1) Where a vertical service space contains an exhaust duct that serves more than one fire compartment, the duct shall have a fan located at or near the exhaust outlet to ensure that the duct is under negative pressure.

2) Individual fire compartments referred to in Sentence (1) shall not have fans that exhaust directly into the duct in the vertical service space.

9.10.9.19. Central Vacuum Systems

1) A central vacuum system shall serve not more than one suite.

9.10.9.20. Multiple Tenant Self Storage Warehouses

9.10.10. Service Rooms

9.10.10.1. Application

1) This Subsection applies to service rooms in all buildings except rooms located within a dwelling unit.

9.10.10.2. Service Room Floors

1) The fire-resistance rating requirements in this Subsection do not apply to the floor assembly immediately below a service room.

9.10.10.3. Separation of Service Rooms

1) Except as provided in Sentence (2) and Articles 9.10.10.5. and 9.10.10.6., service rooms shall be separated from the remainder of the building by a fire separation having a fire-resistance rating of not less than 1 h when the floor area containing the service room is not sprinklered.

2) Where a room contains a limited quantity of service equipment and the service equipment does not constitute a fire hazard, the requirements in Sentence (1) shall not apply.

9.10.10.4. Location of Fuel-Fired Appliances

1) Except as provided in Sentences (2) and (3) and Article 9.10.10.5., fuel-fired appliances shall be located in a service room separated from the remainder of the building by a fire separation having not less than a 1 h fire-resistance rating.

2) Except as required in the appliance installation standards referenced in Sentences 6.2.1.4.(1), 9.33.5.2.(1) and 9.33.5.3.(1), fuel-fired space-heating appliances, space-cooling appliances, service water heaters and laundry appliances need not be separated from the remainder of the building as required in Sentence (1), where the appliances serve

a) not more than one room or suite, or

b) a building with a building area of not more than 400 m² and a building height of not more than 2 storeys.

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2) Except as required in the appliance installation standards referenced in Sentences 6.2.1.4.(1), 9.33.5.2.(1) and 9.33.5.3.(1), fuel-fired space-heating appliances, space-cooling appliances, service water heaters and and laundry appliances need not be separated from the remainder of the building as required in Sentence (1), where the appliances serve

a) not more than one room or suite, or

b) a building with a building area of not more than 400 m² and a building height of not more than 2 storeys.

a) where the appliances serve

i) not more than one room or suite, or

ii) a building with a building area of not more than 400 m² and a building height of not more than 2 storeys, or

b) where the appliances

i) serve a house with a secondary suite including their common spaces, and

ii) are located in a service room where both sides of any wall assemblies and the underside of any floor-ceiling framing separating this room from both dwelling units or their common spaces are protected by a continuous smoke-tight barrier consisting of not less than 12.7 mm thick gypsum board.

3) Sentence (1) does not apply to fireplaces and cooking appliances.

9.10.10.5. Incinerators

1) Service rooms containing incinerators shall be separated from the remainder of the building by a fire separation having a fire-resistance rating of not less than 2 h.

2) The design, construction, installation and alteration of each indoor incinerator shall conform to NFPA 82, “Incinerators and Waste and Linen Handling Systems and Equipment.”

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2) The design, constructionconstruction, installation and alteration of each indoor incinerator shall conform to NFPA 82, “Incinerators and Waste and Linen Handling Systems and Equipment.”

3) Every incinerator shall be connected to a chimney flue conforming to the requirements in Section 9.21. and serving no other appliance.

4) An incinerator shall not be located in a room with other fuel-fired appliances.

9.10.10.6. Storage Rooms

1) Rooms for the temporary storage of combustible refuse in all occupancies or for public storage in residential occupancies shall be separated from the remainder of the building by a fire separation having not less than a 1 h fire-resistance rating, except that a 45 min fire separation is permitted where the fire-resistance rating of the floor assembly is not required to exceed 45 min, or where such rooms are sprinklered.

9.10.11. Firewalls

9.10.11.1. Required Firewalls

1) Except as provided in Article 9.10.11.2., a party wall on a property line shall be constructed as a firewall. (See A-3.2.3.4.(1) in Appendix A.)

9.10.11.2. Firewalls Not Required

1) In a building of residential occupancy in which there is no dwelling unit above another dwelling unit, a party wall on a property line between dwelling units need not be constructed as a firewall provided it is constructed as a fire separation having not less than a 1 h fire-resistance rating.

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1) In Except as stated in Sentence (2), a buildingparty wallof residential occupancyon ain which there isproperty line of ano dwelling unitbuilding ofabove another dwelling unit, a party wall on a property line between dwelling unitsresidential occupancyneed not be constructed as a firewall, provided it is constructed as a fire separation having not less than a 1 h fire-resistance rating., where the party wall separates

a) two dwelling units where there is no dwelling unit above another dwelling unit,

b) a dwelling unit and a house with a secondary suite including their common spaces, or

c) two houses with a secondary suite including their common spaces.

2) Reserved.

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2) Reserved.Where a building of residential occupancy contains more than 2 houses, a party wall that separates any 2 adjacent houses with a secondary suite from the rest of the building shall be constructed as a firewall to create separate buildings each containing no more than 2 adjacent houses with a secondary suite.

3) The wall described in Sentence (1) shall provide continuous protection from the top of the footings to the underside of the roof deck.

4) Any space between the top of the wall described in Sentence (1) and the roof deck shall be tightly filled with mineral wool or noncombustible material.

9.10.11.3. Construction of Firewalls

1) Where firewalls are used, the requirements in Part 3 shall apply.

9.10.12. Prevention of Fire Spread at Exterior Walls and between Storeys

9.10.12.1. Termination of Floors or Mezzanines

1) Except as provided in Sentence (2) and in Articles 9.10.1.3. and 9.10.9.5., the portions of a floor area or mezzanine that do not terminate at an exterior wall, a firewall or a vertical shaft, shall terminate at a vertical fire separation having a fire-resistance rating not less than that required for the floor assembly that terminates at the separation.

2) A mezzanine need not terminate at a vertical fire separation where the mezzanine is not required to be considered as a storey in Articles 9.10.4.1. and 9.10.4.2.

9.10.12.2. Location of Skylights

1) Where a wall in a building is exposed to a fire hazard from an adjoining roof of a separate unsprinklered fire compartment in the same building, the roof shall contain no skylights within a horizontal distance of 5 m of the windows in the exposed wall.

9.10.12.3. Exterior Walls Meeting at an Angle

1) Except as provided in Article 9.9.4.5., where exterior walls of a building meet at an external angle of 135° or less, the horizontal distance from unprotected opening in one exterior wall to an unprotected opening in the other exterior wall shall be not less than 1.2 m, where these openings are

a) in different fire compartments, or

b) in different dwelling units.

2) The exterior wall of each fire compartment referred to in Sentence (1) within the 1.2 m distance shall have a fire-resistance rating not less than that required for the interior vertical fire separation between the compartment and the remainder of the building.

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9.10.12.3. Exterior Walls Meeting at an Angle

1) Except as provided in Article 9.9.4.5., where exterior walls of a building meet at an external angle of 135° or less, the horizontal distance from an unprotected openingopenings in one exterior wall to an unprotected openingopenings in the other exterior wall shall be not less than 1.2 m, where these openings are

a) in different fire compartments, or

b) in different dwelling units, ancillary spaces or common spaces in a house with a secondary suite.

2) The Except as provided in Sentence (3), the exterior wall of each fire compartment referred to in Sentence (1) within the 1.2 m distance shall have a fire-resistance rating not less than that required for the interior vertical fire separation between the compartment and the remainder of the building.

3) Where interior walls between dwelling units, ancillary spaces or common spaces in a house with a secondary suite are not constructed as fire separations, the exterior wall of each dwelling unit, ancillary space or common space referred to in Sentence (1) within the 1.2 m distance shall be finished on the interior with not less than 12.7 mm thick gypsum board.

9.10.12.4. Protection of Soffits

1) This Article applies to the portion of any soffit enclosing a projection that is

a) less than 2.5 m vertically above a window or door, and

b) less than 1.2 m from either side of the window or door.

(See Appendix A.)

2) Except as provided in Sentences (4) and (5), the construction described in Sentence (1) shall have no unprotected openings and shall be protected in accordance with Sentence (3), where the soffit encloses

a) a common attic or roof space that spans more than 2 suites of residential occupancy and projects beyond the exterior wall of the building,

b) a floor space where an upper storey projects beyond the exterior wall of a lower storey and a fire separation is required at the floor between the two, or

c) a floor space where an upper storey projects beyond the exterior wall of a lower storey, and the projection is continuous across a vertical fire separation separating two suites.

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2) Except as provided in Sentences (4) and (5), the constructionconstruction described in Sentence (1) shall have no unprotected openings and shall be protected in accordance with Sentence (3), where the soffit encloses

a) a common attic or roof space that spans more than 2 suites of residential occupancy and projects beyond the exterior wall of the building,

b) a floor space where an upper storey projects beyond the exterior wall of a lower storey and a fire separation is required at the floor between the two, or

c) a floor space where an upper storey projects beyond the exterior wall of a lower storey, and the projection is continuous across a vertical fire separation separating two suites.

2) Except as provided in Sentences (4) and (5), the constructionconstruction described in Sentence (1) shall have no unprotected openings and shall be protected in accordance with Sentence (3), where the soffit encloses

a) a common attic or roof space that spans more than 2 suites of residential occupancy and projects beyond the exterior wall of the building,

b) a floor space where an upper storey projects beyond the exterior wall of a lower storey and a fire separation is required at the floor between the two, or

i) a fire separation is required at the floor between the two, or

ii) the floor separates dwelling units from each other or a dwelling unit from an ancillary space or a common space in a house with a secondary suite, or

c) a floor space where an upper storey projects beyond the exterior wall of a lower storey, and the projection is continuous across a vertical fire separation separating two suites.

i) a vertical fire separation separating two suites, or

ii) a wall separating dwelling units from each other or a dwelling unit from an ancillary space or a common space in a house with a secondary suite.

3) Protection required by Sentence (2) shall be provided by

a) noncombustible material having a minimum thickness of 0.38 mm and a melting point not below 650°C,

b) not less than 12.7 mm thick gypsum soffit board or gypsum wallboard installed according to CSA A82.31-M, “Gypsum Board Application,”

c) not less than 11 mm thick plywood,

d) not less than 12.5 mm thick OSB or waferboard, or

e) not less than 11 mm thick lumber.

(See Appendix A.)

4) In the case of a soffit described in Sentence (1) that is at the edge of an attic or roof space and completely separated from the remainder of that attic or roof space by fire blocks, the requirements in Sentence (2) do not apply.

5) Where all suites spanned by a common attic or roof space or situated above or below the projecting floor are sprinklered, the requirements of Sentence (2) do not apply, provided that all rooms, including closets and bathrooms, having openings in the wall beneath the soffit are sprinklered, notwithstanding any exceptions in the sprinkler standards referenced in Article 3.2.5.12.

9.10.13. Doors, Dampers and Other Closures in Fire Separations

9.10.13.1. Closures

1) Except as provided in Article 9.10.13.2., openings in required fire separations shall be protected with a closure conforming to Table 9.10.13.1. and shall be installed in conformance with Chapters 2 to 14 of NFPA 80, “Fire Doors and Other Opening Protectives,” unless otherwise specified herein. (See also Article 9.10.3.1.)

9.10.13.2. Solid Core Wood Door as a Closure

1) A 45 mm thick solid core wood door is permitted to be used where a minimum fire-protection rating of 20 min is permitted, between a secondary suite or lock-off unit and its primary dwelling unit, or between a public corridor and a suite provided that the door conforms to CAN/ULC-S113, “Wood Core Doors Meeting the Performance Required by CAN/ULC-S104 for Twenty Minute Fire Rated Closure Assemblies.” (See Appendix A.)

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1) A 45 mm thick solid core wood door is permitted to be used where a minimum fire-protection rating of 20 min is permitted, between a secondary suiteor lock-off unit and its primary dwelling unit, or between a public corridor and a suite provided that the door conforms to CAN/ULC-S113, “Wood Core Doors Meeting the Performance Required by CAN/ULC-S104 for Twenty Minute Fire Rated Closure Assemblies.” (See Appendix A.)

2) Doors described in Sentence (1) shall have not more than a 6 mm clearance beneath and not more than 3 mm at the sides and top.

9.10.13.3. Unrated Wood Door Frames

1) Doors required to provide a 20 min fire-protection rating or permitted to be 45 mm solid core wood shall be mounted in a wood frame of not less than 38 mm thickness where the frame has not been tested and rated.

9.10.13.4. Doors as a Means of Egress

1) Doors forming part of an exit or a public means of egress shall conform to Subsection 9.9.6. in addition to this Subsection.

9.10.13.5. Wired Glass as a Closure

1) Wired glass conforming to Article 9.6.1.2. which has not been tested in accordance with Article 9.10.3.1. is permitted as a closure in a vertical fire separation required to have a fire-resistance rating of not more than 1 h provided such glass is not less than 6 mm thick and is mounted in conformance with Sentence (2).

2) Wired glass described in Sentence (1) shall be mounted in fixed steel frames having a metal thickness of not less than 1.35 mm and a glazing stop of not less than 20 mm on each side of the glass.

3) Individual panes of glass described in Sentence (1) shall not exceed 0.8 m² in area or 1.4 m in height or width, and the area of glass not structurally supported by mullions shall not exceed 7.5 m².

9.10.13.6. Steel Door Frames

1) Steel door frames forming part of a closure in a fire separation, including anchorage requirements, shall conform to CAN4-S105-M, “Fire Door Frames Meeting the Performance Required by CAN4-S104.”

9.10.13.7. Glass Block as a Closure

1) Glass block that has not been tested in accordance with Article 9.10.3.1. is permitted as a closure in a fire separation required to have a fire-resistance rating of not more than 1 h. (See Article 9.20.9.6.)

9.10.13.8. Maximum Size of Opening

1) The size of an opening in an interior fire separation, even where protected with a closure, shall not exceed 11 m², with no dimension greater than 3.7 m, when the fire compartments on both sides of the fire separation are not sprinklered.

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1) The size of an opening in an interior fire separationfire separation, even where protected with a closure, shall not exceed 11 m², with no dimension greater than 3.7 m, when the fire compartments on both sides of the fire separation are not sprinklered.

2) The size of an opening in an interior fire separation, even where protected with a closure, shall not exceed 22 m², with no dimension greater than 6 m, when the fire compartments on both sides of the fire separation are sprinklered.

9.10.13.9. Door Latch

1) Every swing type door in a fire separation shall be equipped with a latch.

9.10.13.10. Self-closing Device

1) Except as described in Sentence (2), every door in a fire separation shall have a self-closing device.

2) Self-closing doors are not required between public corridors and suites in business and personal services occupancies, except in dead-end corridors.

9.10.13.11. Hold-Open Devices

1) Where hold-open devices are used on doors in required fire separations, they shall be installed in accordance with Article 3.1.8.12.

9.10.13.12. Service Room Doors

1) Swing-type doors shall open into service rooms containing fuel-fired equipment where such doors lead to public corridors or rooms used for assembly but shall swing outward from such rooms in all other cases.

9.10.13.13. Fire Dampers

1) Except as permitted by Sentences (2) to (5) and Sentence 9.10.5.1.(4), a duct that penetrates an assembly required to be a fire separation with a fire-resistance rating shall be equipped with a fire damper in conformance with Articles 3.1.8.4. and 3.1.8.9.

2) A fire damper is not required where a noncombustible branch duct pierces a required fire separation provided the duct

a) has a melting point not below 760°C,

b) has a cross-sectional area less than 130 cm², and

c) supplies only air-conditioning units or combined air-conditioning and heating units discharging air at not more than 1.2 m above the floor.

3) A fire damper is not required where a noncombustible branch duct pierces a required fire separation around an exhaust duct riser in which the airflow is upward provided

a) the melting point of the branch duct is not below 760°C,

b) the branch duct is carried up inside the riser not less than 500 mm, and

c) the exhaust duct is under negative pressure as described in Article 9.10.9.18.

4) Noncombustible ducts that penetrate a fire separation separating a vertical service space from the remainder of the building need not be equipped with a fire damper at the fire separation provided

a) the ducts have a melting point above 760°C, and

b) each individual duct exhausts directly to the outside at the top of the vertical service space.

5) A duct serving commercial cooking equipment and piercing a required fire separation need not be equipped with a fire damper at the fire separation. (See also Article 6.2.2.7.)

9.10.13.14. Fire Stop Flaps

1) Fire stop flaps in ceiling membranes required in Sentence 9.10.5.1.(4) shall be constructed in conformance with Appendix D, Fire-Performance Ratings.

9.10.13.15. Doors between Garages and Dwelling Units

1) A door between an attached or built-in garage and a dwelling unit shall be tight fitting and weather-stripped to provide an effective barrier against the passage of gas and exhaust fumes and shall be fitted with a self-closing device.

2) A doorway between an attached or built-in garage and a dwelling unit shall not be located in a room intended for sleeping.

9.10.13.16. Door Stops

1) Where a door is installed so that it may damage the integrity of a fire separation if its swing is unrestricted, door stops shall be installed to prevent such damage.

9.10.14. Spatial Separation Between Buildings

9.10.14.1. Application

1) This Subsection applies to buildings other than those to which Subsection 9.10.15. applies.

9.10.14.2. Area and Location of Exposing Building Face

1) The area of an exposing building face shall be

a) taken as the exterior wall area facing in one direction on any side of a building, and

b) calculated as

i) the total area measured from the finished ground level to the uppermost ceiling, or

ii) the area for each fire compartment, where a building is divided into fire compartments by fire separations with fire-resistance ratings not less than 45 min.

2) For the purpose of using Table 9.10.14.4.A to determine the maximum aggregate area of unprotected openings in an irregularly shaped or skewed exterior wall, the location of the exposing building face shall be taken as a vertical plane located so that there are no unprotected openings between the vertical plane and the line to which the limiting distance is measured. (See A-3.2.3.1.(4) in Appendix A.)

3) For the purpose of using Table 9.10.14.5.A to determine the required type of construction, cladding and fire-resistance rating for an irregularly shaped or skewed exterior wall,

a) the location of the exposing building face shall be taken as a vertical plane located so that no portion of the actual exposing building face is between the vertical plane and the line to which the limiting distance is measured, and

b) the value for the maximum area of unprotected openings (see second column of Table 9.10.14.5.A) shall be determined using the limiting distance measured from the location described in Clause (a). (See A-3.2.3.1.(4) in Appendix A.)

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3) For the purpose of using Table 9.10.14.5.A to determine the required type of constructionconstruction, cladding and fire-resistance rating for an irregularly shaped or skewed exterior wall,

a) the location of the exposing building face shall be taken as a vertical plane located so that no portion of the actual exposing building face is between the vertical plane and the line to which the limiting distance is measured, and

b) the value for the maximum area of unprotected openings (see second column of Table 9.10.14.5.A) shall be determined using the limiting distance measured from the location described in Clause (a). (See A-3.2.3.1.(4) in Appendix A.)

9.10.14.3. Limiting Distance and Fire Department Response

1) Except as provided in Sentence (2) and except for the purpose of applying Sentences 9.10.14.4.(2), (3), (8) and (9), and Sentences 9.10.14.5.(3), (8) and (12), a limiting distance equal to half the actual limiting distance shall be used as input to the requirements of this Subsection, where

a) the time from receipt of notification of a fire by the fire department until the first fire department vehicle arrives at the building exceeds 10 min in 10 per cent or more of all calls to the building, and

b) any storey in the building is not sprinklered.

(See A-3.2.3. and A-3.2.3.1.(8) in Appendix A.)

BC2012  2013-04-03 R2NC2010  2010-01-01 R1

1) Except as provided in Sentence (2) and except for the purpose of applying Sentences 9.10.14.4.(2), (3), (8) and (9), and Sentences 9.10.14.5.(3), (8) and (12), a limiting distance equal to half the actual limiting distance shall be used as input to the requirements of this Subsection, where

a) the time from receipt of notification of a fire by the fire department until the first fire department vehicle arrives at the building exceeds 10 min in 10 per cent 10% or more of all calls to the building, and

b) any storey in the building is not sprinklered.

(See A-3.2.3. and A-3.2.3.1.(8) in Appendix A.)

1) Except as provided in Sentence (2) and except for the purpose of applying Sentences 9.10.14.4.(2), (3), (8) and (9), and Sentences 9.10.14.5.(3), (8) and (12), a limiting distance equal to half the actual limiting distance shall be used as input to the requirements of this Subsection, where

a) the time from receipt of notification of a fire by the fire department until the first fire department vehicle arrives at the building exceeds 10 min in 10 per cent 10% or more of all calls to the building, and

b) any storey in the building is not sprinklered.

(See A-3.2.3. and A-3.2.3.1.(8) in Appendix A.)

2) Except for the purpose of applying Sentences 9.10.14.4.(2), 9.10.14.4.(3), 9.10.14.4.(8) and 9.10.14.4.(9) and Sentences 9.10.14.5.(3), 9.10.14.5.(8) and 9.10.14.5.(12), a limiting distance equal to half the actual limiting distance shall be used as input to the requirements of this Subsection, where

a) a building for which a building permit was applied for before December 20, 2014 is or is proposed to be located in a subdivision for which a subdivision plan was registered in a land title office before December 20, 2013,

b) Deleted, and

c) the building is not sprinklered.

BC2012  2013-04-03 R2

2) Except for the purpose of applying Sentences 9.10.14.4.(2), 9.10.14.4.(3), 9.10.14.4.(8) and 9.10.14.4.(9) and Sentences 9.10.14.5.(3), 9.10.14.5.(8) and 9.10.14.5.(12), a limiting distance equal to half the actual limiting distance shall be used as input to the requirements of this Subsection, where

a) a building for which a building permit was applied for before December 20, 2014 is or is proposed to be located in a subdivision for which a subdivision plan was registered in a land title office before December 20, 2013,

b) Deleted, andthere is no fire department or the fire department is not organized, trained and equipped to meet the needs of the community, and

c) the building is not sprinklered.

9.10.14.4. Openings in Exposing Building Face

1) Except as provided in Sentences (6) to (10), the maximum aggregate area of unprotected openings in an exposing building face shall

a) conform to Table 9.10.14.4.A,

b) conform to Subsection 3.2.3., or

c) where the limiting distance is not less than 1.2 m, be equal to or less than

i) the limiting distance squared, for residential occupancies, business and personal services occupancies and low-hazard industrial occupancies, and

ii) half the limiting distance squared, for mercantile occupancies and medium-hazard industrial occupancies.

2) Openings in a wall having a limiting distance of less than 1.2 m shall be protected by closures, of other than wired glass or glass block, whose fire-protection rating is in conformance with the fire-resistance rating required for the wall. (See Table 9.10.13.1.)

3) Except for buildings that are sprinklered and for openable windows having an unobstructed opening equal to 0.35 m² installed in accordance with Sentences 9.9.10.1.(1) and (2), where the limiting distance is 2 m or less, individual unprotected openings shall be no greater than

a) the area stated in Table 9.10.14.4.B, or

b) where the limiting distance is equal to or greater than 1.2 m, the area calculated by

where

Area= area of the unprotected opening, and

LD= limiting distance.

4) The spacing between individual unprotected openings described in Sentence (3) that serve a single room or space described in Sentence (5) shall be not less than

a) 2 m horizontally of another unprotected opening that is on the same exposing building face and serves the single room or space, or

b) 2 m vertically of another unprotected opening that serves the single room or space, or another room or space on the same storey.

5) For the purpose of Sentence (4), “single room or space” shall mean

a) two or more adjacent spaces having a full-height separating wall extending less than 1.5 m from the interior face of the exterior wall, or

b) two or more stacked spaces that are on the same storey.

6) If a building is not sprinklered, the maximum aggregate area of unprotected openings shall be not more than twice the area determined according to Sentence (1), where the unprotected openings are glazed with

a) wired glass in steel frames, as described in Article 9.10.13.5., or

b) glass blocks, as described in Article 9.10.13.7.

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6) If a building is not sprinklered, the The maximum aggregate area of unprotected openings shall be not more than twice the area determined according to Sentence (1), where the unprotected openings are glazed with

a) wired glass in steel frames, as described in Article 9.10.13.5., or

b) glass blocks, as described in Article 9.10.13.7.

7) Where the building is sprinklered, the maximum aggregate area of unprotected openings shall be not more than twice the area determined according to Sentence (1), provided all rooms, including closets and bathrooms, that are adjacent to the exposing building face and that have unprotected openings are sprinklered, notwithstanding any exemptions in the sprinkler standards referenced in Article 3.2.5.12.

8) If a storage garage has a limiting distance of no less than 3 m, the exposing building face of such storage garage may have unlimited unprotected openings.

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8) If a storage garage has a limiting distance of no less than 3 m, the exposing building face of such storage garage may have unlimited unprotected openings.The maximum aggregate area of unprotected openings in an exposing building face of a storage garage need not comply with Sentence (1), where

a) all storeys are constructed as open-air storeys, and

b) the storage garage has a limiting distance of not less than 3 m.

9) The maximum aggregate area of unprotected openings in an exposing building face of a storey that faces a street and is at the same level as the street need not comply with Sentence (1), where the limiting distance is not less than 9 m.

10) Except as provided in Sentence (11), for garages or accessory buildings that serve a single dwelling unit only and are detached from any building, the maximum aggregate area of glazed openings shall comply with the requirements for unprotected openings.

11) The limits on the area of glazed openings stated in Sentence (10) need not apply to the exposing building face of a detached garage or accessory building facing a dwelling unit, where

a) the detached garage or accessory building serves only one dwelling unit,

b) the detached garage or accessory building is located on the same property as that dwelling unit, and

c) the dwelling unit served by the detached garage or accessory building is the only major occupancy on the property.

12) Where a building of residential occupancy is sprinklered and the limiting distance is less than 1.2 m but no less than 1 m, the maximum percentage of unprotected openings may be 10 per cent provided

a) the windows are glazed with tempered, wired or laminated glass, or glass block, and

b) the exposing building face is constructed according to Article 9.10.14.5.

9.10.14.5. Construction of Exposing Building Face and Walls above Exposing Building Face

1) Except as permitted in Sentences (3) to (14), each exposing building face and any exterior wall located above an exposing building face that encloses an attic or roof space shall be constructed in conformance with Table 9.10.14.5.A. (See Appendix A.) (See also Subsection 9.10.8.)

NC2010  2010-01-01 R1

1) Except as permitted in Sentences (3) to (14), each exposing building face and any exterior wall located above an exposing building face that encloses an attic or roof space shall be constructed in conformance with Table 9.10.14.5.A. (See Appendix A.) (See also Subsection 9.10.8.)

Table 9.10.14.5.A Minimum Construction Requirements for Exposing Building Faces Forming part of Sentence 9.10.14.5.(1)
Occupancy Classification of Building or Fire Compartment	Maximum Area of Unprotected Openings Permitted, % of Exposing Building Face Area	Minimum Required Fire-Resistance Rating	Type of Construction Required	Type of Cladding Required
Residential, business and personal services, and low-hazard industrial	0 to 10	1 h	Noncombustible	Noncombustible
	> 10 to 25	1 h	Combustible or noncombustible	Noncombustible
	> 25 to 50	45 min	Combustible or noncombustible	Noncombustible
	> 50 to < 100	45 min	Combustible or noncombustible	Combustible or noncombustible
Mercantile and medium-hazard industrial	0 to 10	2 h	Noncombustible	Noncombustible
	> 10 to 25	2 h	Combustible or noncombustible	Noncombustible
	> 25 to 50	1 h	Combustible or noncombustible	Noncombustible
	> 50 to < 100	1 h	Combustible or noncombustible	Combustible or noncombustible

2) Except as provided in Sentences (3) to (8), cladding on exposing building faces and exterior walls located above exposing building faces that enclose an attic or roof space, for buildings or fire compartments where the maximum permitted area of unprotected openings is more than 10 per cent of the exposing building face, need not be noncombustible where the wall assembly complies with the requirements of Sentences 3.1.5.5.(3) and (4) when tested in conformance with CAN/ULC-S134, “Fire Test of Exterior Wall Assemblies.”

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2) Except as provided in Sentences (3) to (8), cladding on exposing building faces and exterior walls located above exposing building faces that enclose an attic or roof space, for buildings or fire compartments where the maximum permitted area of unprotected openings is more than 10 per cent 10% of the exposing building face, need not be noncombustible where the wall assembly complies with the requirements of Sentences 3.1.5.5.(3) and (4) when tested in conformance with CAN/ULC-S134, “Fire Test of Exterior Wall Assemblies.”

3) Except as provided in Sentences (4) to (8) and permitted by Sentence (9), cladding on exposing building faces and on exterior walls located above exposing building faces of buildings or fire compartments where the maximum permitted area of unprotected openings is more than 25 per cent but not more than 50 per cent of the exposing building face need not be noncombustible, where

a) the limiting distance is greater than 5.0 m,

b) the limiting distance is greater than 2.5 m where the area and width-to-height ratio of the exposing building face conform to Table 9.10.14.5.B,

c) the building or fire compartment is sprinklered,

d) the cladding

i) conforms to Subsections 9.27.6., 9.27.7., 9.27.8. or 9.27.9.,

ii) is installed without furring members, or on furring not more than 25 mm thick, over gypsum sheathing at least 12.7 mm thick or over masonry, and

iii) after conditioning in conformance with ASTM D 2898, “Accelerated Weathering of Fire-Retardant-Treated Wood for Fire Testing,” has a flame-spread rating not greater than 25 when tested in accordance with Sentence 3.1.12.1.(2), or

e) the cladding

i) conforms to Subsection 9.27.12.,

ii) is installed with or without furring members over a gypsum sheathing at least 12.7 mm thick or over masonry,

iii) has a flame-spread rating not greater than 25 when tested in accordance with Sentence 3.1.12.1.(2), and

iv) does not exceed 2 mm in thickness exclusive of fasteners, joints and local reinforcements.

BC2012  2014-12-19 R6NC2010  2010-01-01 R1

3) Except as provided in Sentences (4) to (8) and permitted by Sentence (9), cladding on exposing building faces and on exterior walls located above exposing building faces of buildings or fire compartments where the maximum permitted area of unprotected openings is more than 25 per cent 25% but not more than 50 per cent 50% of the exposing building face need not be noncombustible, where

a) the limiting distance is greater than 5.0 m,

b) the limiting distance is greater than 2.5 m where the area and width-to-height ratio of the exposing building face conform to Table 9.10.14.5.B,

c) the building or fire compartment is sprinklered,

d) the cladding

i) conforms to Subsections 9.27.6., 9.27.7., 9.27.8. or 9.27.9., 9.27.8. or 9.27.9.,

ii) is installed without furring members, or on furring not more than 25 mm thick, over gypsum sheathing at least 12.7 mm thick or over masonry, and

iii) after conditioning in conformance with ASTM D 2898, “Accelerated Weathering of Fire-Retardant-Treated Wood for Fire Testing,” has a flame-spread rating not greater than 25 when tested in accordance with Sentence 3.1.12.1.(2), or

e) the cladding

i) conforms to Subsection 9.27.12.,

ii) is installed with or without furring members over a gypsum sheathing at least 12.7 mm thick or over masonry,

iii) has a flame-spread rating not greater than 25 when tested in accordance with Sentence 3.1.12.1.(2), and

iv) does not exceed 2 mm in thickness exclusive of fasteners, joints and local reinforcements.

3) Except as provided in Sentences (4) to (8) and permitted by Sentence (9), cladding on exposing building faces and on exterior walls located above exposing building faces of buildings or fire compartments where the maximum permitted area of unprotected openings is more than 25 per cent 25% but not more than 50 per cent 50% of the exposing building face need not be noncombustible, where

a) the limiting distance is greater than 5.0 m,

b) the limiting distance is greater than 2.5 m where the area and width-to-height ratio of the exposing building face conform to Table 9.10.14.5.B, and

c) the building or fire compartment is sprinklered,

d) the cladding

i) conforms to Subsections 9.27.6., 9.27.7., 9.27.8. or 9.27.9.,

ii) is installed without furring members, or on furring not more than 25 mm thick, over gypsum sheathing at least 12.7 mm thick or over masonry, and

iii) after conditioning in conformance with ASTM D 2898, “Accelerated Weathering of Fire-Retardant-Treated Wood for Fire Testing,” has a flame-spread rating not greater than 25 when tested in accordance with Sentence 3.1.12.1.(2), or

e) the cladding

i) conforms to Subsection 9.27.12.,

ii) is installed with or without furring members over a gypsum sheathing at least 12.7 mm thick or over masonry,

iii) has a flame-spread rating not greater than 25 when tested in accordance with Sentence 3.1.12.1.(2), and

iv) does not exceed 2 mm in thickness exclusive of fasteners, joints and local reinforcements.

Table 9.10.14.5.B Maximum Allowable Area and Ratio of Width to Height of Exposing Building Face Forming part of Sentence 9.10.14.5.(3)
Maximum Ratio of Width to Height of Exposing Building Face	Maximum Area of Exposing Building Face, m2
1:1	88
2:1	102
3:1	129
4:1	161
5:1	195

4) Except as provided in Sentence (5), if a detached garage or accessory building serves one dwelling unit; or if a detached garage serves both units in a two-family dwelling and has a continuous internal fire separation, with a 45 minute fire resistance rating from the floor slab to the roof sheathing separating the parking spaces for each unit, the exposing building face:

a) need not conform to the minimum required fire-resistance rating stated in Table 9.10.14.5.A, where the limiting distance is 0.6 m or more,

b) shall have a fire-resistance rating of not less than 45 min, where the limiting distance is less than 0.6 m, and

c) need not conform to the type of cladding required by Table 9.10.14.5.A, regardless of the limiting distance.

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4) Except as provided in Sentence (5), ifwhere a detached garage or accessory building serves one dwelling unit; or if a detached garage serves both units in a two-family dwelling only and has a continuous internalis detached from anyfire separationbuilding, with a 45 minute fire resistance rating from the floor slab to the roof sheathing separating the parking spaces for each unit, the the exposing building face:

a) need not conform to the minimum required fire-resistance rating stated in Table 9.10.14.5.A, where the limiting distance is 0.6 m or more,

b) shall have a fire-resistance rating of not less than 45 min, where the limiting distance is less than 0.6 m, and

c) need not conform to the type of cladding required by Table 9.10.14.5.A, regardless of the limiting distance.

5) The requirements regarding fire-resistance rating, type of construction and type of cladding need not apply to the exposing building face of a detached garage conforming to Sentence 9.10.14.5.(4) or accessory building facing a one-family dwelling or two-family dwelling, where

a) the detached garage or accessory building serves only one-family dwelling or two-family dwelling,

b) the detached garage or accessory building is located on the same property as that one-family dwelling or two-family dwelling, and

c) the one-family dwelling or two-family dwelling served by the detached garage or accessory building is the only major occupancy on the property.

NC2010  2010-01-01 R1

5) The requirements regarding fire-resistance rating, type of constructionconstruction and type of cladding need not apply to the exposing building face of a detached garage conforming to Sentence 9.10.14.5.(4)or accessory building facing a one-family dwelling or two-family dwellingdwelling unit, where

a) the detached garage or accessory building serves only one-family dwellingoneor two-family dwellingdwelling unit,

b) the detached garage or accessory building is located on the same property as that one-family dwelling or two-family dwellingdwelling unit, and

c) the one-family dwellingdwelling unitor two-family dwellingserved by the detached garage or accessory building is the only major occupancy on the property.

6) Except as provided in Sentence (7), combustible projections on the exterior of a wall that are more than 1 m above ground level and that could expose an adjacent building to fire spread shall not be permitted within

a) 1.2 m of a property line or the centre line of a public way, or

b) 2.4 m of a combustible projection on another building on the same property.

7) Except as provided in Sentences (9) to (11), Sentence (6) shall not apply to

a) buildings containing one-family dwelling or two-family dwelling only, and

b) detached garages or accessory buildings, where

i) the detached garage conforming to Sentence 9.10.14.5.(4) or accessory building serves only one-family dwelling or two-family dwelling,

ii) the detached garage conforming to Sentence 9.10.14.5.(4) or accessory building is located on the same property as that one-family dwelling or two-family dwelling, and

iii) the one-family dwelling or two-family dwelling served by the detached garage conforming to Sentence 9.10.14.5.(4) or accessory building is the only major occupancy on the property.

(See Appendix A.)

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7) Except as provided in Sentences (9) to (11), Sentence (6) shall not apply to

a) buildings containing one-family dwelling1 or two-family dwelling2 dwelling units only, and

b) detached garages or accessory buildings, where

i) the detached garage conforming to Sentence 9.10.14.5.(4)or accessory building serves only one-family dwellingoneor two-family dwellingdwelling unit,

ii) the detached garage conforming to Sentence 9.10.14.5.(4)or accessory building is located on the same property as that one-family dwelling or two-family dwellingdwelling unit, and

iii) the one-family dwellingdwelling unitor two-family dwellingserved by the detached garage conforming to Sentence 9.10.14.5.(4)or accessory building is the only major occupancy on the property.

(See Appendix A.)

8) Where combustible projections on an exposing building face are permitted by Sentence (7), are totally enclosed and constructed with solid faces, such as for fireplaces and chimneys, and extend within 1.2 m of a property line,

a) the construction of the face and sides of the projection shall comply with the corresponding requirements for exposing building faces for limiting distances less than 1.2 m as stated in Sentence (2) or (3), and

b) where the underside of the projection is more than 0.6 m above finished ground level, it shall be protected by

i) not less than 0.38 mm thick noncombustible material,

ii) unvented aluminum conforming to CAN/CGSB-93.2-M, “Prefinished Aluminum Siding, Soffits, and Fascia, for Residential Use,”

iii) not less than 12.7 mm thick gypsum soffit board or gypsum ceiling board installed according to CSA A82.31-M, “Gypsum Board Application,”

iv) not less than 11 mm thick plywood,

v) not less than 12.5 mm thick OSB or waferboard, or

vi) not less than 11 mm thick lumber.

(See Appendix A.)

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8) Where combustible projections on an exposing building face are permitted by Sentence (7), are totally enclosed and constructed with solid faces, such as for fireplaces and chimneys, and extend within 1.2 m of a property line,

a) the constructionconstruction of the face and sides of the projection shall comply with the corresponding requirements for exposing building faces for limiting distances less than 1.2 m as stated in Sentence (2) or (3), and

b) where the underside of the projection is more than 0.6 m above finished ground level, it shall be protected by

i) not less than 0.38 mm thick noncombustible material,

ii) unvented aluminum conforming to CAN/CGSB-93.2-M, “Prefinished Aluminum Siding, Soffits, and Fascia, for Residential Use,”

iii) not less than 12.7 mm thick gypsum soffit board or gypsum ceiling board installed according to CSA A82.31-M, “Gypsum Board Application,”

iv) not less than 11 mm thick plywood,

v) not less than 12.5 mm thick OSB or waferboard, or

vi) not less than 11 mm thick lumber.

(See Appendix A.)

9) Where the exposing building face has a limiting distance of not more than 0.45 m, projecting roof soffits shall not be constructed above the exposing building face. (See A-3.2.3.6.(2) in Appendix A.)

10) Where the exposing building face has a limiting distance of more than 0.45 m, the face of roof soffits above the exposing building face shall not project to less than 0.45 m from the property line. (See A-3.2.3.6.(2) in Appendix A.)

11) Where roof soffits project to less than 1.2 m from the property line, the centre line of a lane or public thoroughfare, or an imaginary line between 2 buildings or fire compartments on the same property, they shall

a) have no openings, and

b) be protected by

i) not less than 0.38 mm thick sheet steel,

ii) unvented aluminum conforming to CAN/CGSB-93.2-M, “Prefinished Aluminum Siding, Soffits, and Fascia, for Residential Use,”

iii) not less than 12.7 mm thick gypsum soffit board or gypsum ceiling board installed according to CSA A82.31-M, “Gypsum Board Application,”

iv) not less than 11 mm thick plywood,

v) not less than 12.5 mm thick OSB or waferboard, or

vi) not less than 11 mm thick lumber.

(See A-3.2.3.6.(2) in Appendix A.)

12) Heavy timber and steel columns need not conform to the requirements of Sentence (1), provided the limiting distance is not less than 3 m.

13) Non-loadbearing wall components need not have a minimum fire-resistance rating, where the building

a) is 1 storey in building height,

b) is of noncombustible construction,

c) is classified as a low-hazard industrial occupancy and used only for low fire load occupancies, such as power-generating plants or plants for the manufacture or storage of noncombustible materials, and

d) has a limiting distance of 3 m or more.

14) Where a residential building is sprinklered, and Table 9.10.14.5.A requires noncombustible construction, the exposing building faces may use a wood stud wall assembly having a 1 hour fire-resistance rating provided the limiting distance is at least 1.0 m and the wall assembly is of noncombustible construction throughout excepting structural elements and sheathing.

9.10.15. Spatial Separation Between Residential Buildings

(see Appendix A)

9.10.15.1. Application

1) This Subsection applies to

a) buildings containing only dwelling units with no dwelling unit above another dwelling unit except as described in Clause (b) or (c),

b) one-family dwellings with secondary suite,

c) two-family dwellings having no dwelling unit above another dwelling unit except secondary suite within the principal dwelling unit,

d) laneway houses, and

e) accessory buildings that serve a building described in Clause (a).

VC2014  2015-01-01 R1BC2012  2014-12-19 R7BC2012  2012-01-01 R1NC2010  2010-01-01 R1

1) This Subsection applies to

a) buildings containing only dwelling units with no dwelling unit above another dwelling unit except as described in Clause (b) or (c),

b) one-family dwellings with secondary suite,

c) two-family dwellings having no dwelling unit above another dwelling unit except secondary suite within the principal dwelling unit, and

d) laneway houses, and.

e) accessory buildings that serve a building described in Clause (a).

1) This Subsection applies to

a) buildingscontaining that contain only dwelling unitswith and have no dwelling unit above another dwelling unit except as described in Clause (b) or (c),, and

b) one-family dwellings with secondary suite,

c) two-family dwellings having no dwelling unit above another dwelling unit except secondary suite within the principal dwelling unit,

d) laneway houses, and

e) accessory buildingsbuildings that serve a buildingbuilding described in Clause (a).

1) This Subsection applies tobuildings that contain only dwelling units and have no dwelling unit above another dwelling unit; (See Appendix A.)

a) buildings containing only dwelling units with no dwelling unit above another dwelling unit except as described in Clause (b) or (c),

b) one-family dwellings with secondary suite,

c) two-family dwellings having no dwelling unit above another dwelling unit except secondary suite within the principal dwelling unit,

d) laneway houses, and

e) accessory buildings that serve a building described in Clause (a).

1) This Subsection applies to

a) buildingscontaining that contain only dwelling unitswith and have no dwelling unit above another dwelling unit except as described in Clause (b) or (c),, and

b) one-family dwellings with secondary suite,

c) two-family dwellings having no dwelling unit above another dwelling unit except secondary suite within the principal dwelling unit,

d) laneway houses, and

e) accessory buildings that serve a building described in Clause (a).houses with a secondary suite including their common spaces.

(See Appendix A.)

9.10.15.2. Area and Location of Exposing Building Face

1) The area of an exposing building face shall be

a) taken as the exterior wall area facing in one direction on any side of a building, and

b) calculated as

i) the total area measured from the finished ground level to the uppermost ceiling,

ii) the area for each fire compartment, where a building is divided into fire compartments by fire separations with fire-resistance ratings not less than 45 min, or

iii) except as provided in Sentence (2), where Table 9.10.15.4. is used to determine the maximum aggregate area of unprotected openings, the area of any number of individual vertical portions of the wall measured from the finished ground level to the uppermost ceiling. (See A-9.10.15.4.(2) in Appendix A.)

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1) The area of an exposing building face shall be

a) taken as the exterior wall area facing in one direction on any side of a building, and

b) calculated as

i) the total area measured from the finished ground level to the uppermost ceiling,

ii) the area for each fire compartment, where a building is divided into fire compartments by fire separations with fire-resistance ratings not less than 45 min, or

iii) except as provided in Sentence (2), where Table 9.10.15.4. is used to determine the maximum aggregate area of unprotected openingsglazed openings, the area of any number of individual vertical portions of the wall measured from the finished ground level to the uppermost ceiling. (See A-9.10.15.4.(2) in Appendix A.)

2) Where the exposing building face of any section of an exterior wall enclosing a single room or space, or combination room and space, has a limiting distance of 2 m or less, that section of the exposing building face serving the room or space shall not be divided into portions for the purpose of calculating area of exposing building face. (See Sentence 9.10.15.4.(5) and A-9.10.15.4.(2) in Appendix A.)

3) For the purpose of using Table 9.10.15.4. to determine the maximum permitted area of unprotected openings in an irregularly shaped or skewed exterior wall, the location of the exposing building face shall be taken as a vertical plane located so that there are no unprotected openings between the vertical plane and the line to which the limiting distance is measured. (See A-3.2.3.1.(4) in Appendix A.)

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3) For the purpose of using Table 9.10.15.4. to determine the maximum permitted area of unprotected openingsglazedopenings in an irregularly shaped or skewed exterior wall, the location of the exposing building face shall be taken as a vertical plane located so that there are no unprotected openingsglazedopenings between the vertical plane and the line to which the limiting distance is measured. (See A-3.2.3.1.(4) in Appendix A.)

4) In determining the required cladding-sheathing assembly and fire-resistance rating for an irregularly shaped or skewed exterior wall, the location of the exposing building face shall be taken as a vertical plane located so that no portion of the actual exposing building face is between the vertical plane and the line to which the limiting distance is measured. (See Article 9.10.15.5. and A-3.2.3.1.(4) in Appendix A.)

9.10.15.3. Limiting Distance and Fire Department Response

1) Except as provided in Sentence 9.10.15.3.(2) and except for the purpose of applying Sentences 9.10.15.2.(2), 9.10.15.4.(3) and 9.10.15.5.(12), a limiting distance equal to half the actual limiting distance shall be used as input to the requirements of this Subsection, where

a) the time from receipt of notification of a fire by the fire department until the first fire department vehicle arrives at the building exceeds 10 min in 10 per cent or more of all calls to the building, and

b) any storey in the building is not sprinklered.

(See A-3.2.3. and A-3.2.3.1.(8) in Appendix A.)

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1) Except as provided in Sentence 9.10.15.3.(2) and except for the purpose of applying Sentences 9.10.15.2.(2), 9.10.15.4.(3) and 9.10.15.5.(12), a limiting distance equal to half the actual limiting distance shall be used as input to the requirements of this Subsection, where

a) the time from receipt of notification of a fire by the fire department until the first fire department vehicle arrives at the building exceeds 10 min in 10 per cent 10 min in 10% or more of all calls to the building, and

b) any storey in the building is not sprinklered.

(See A-3.2.3. and A-3.2.3.1.(8) in Appendix A.)

1) Except as provided in Sentence 9.10.15.3.(2) and except for the purpose of applying Sentences 9.10.15.2.(2), 9.10.15.4.(3) and 9.10.15.5.(12), a limiting distance equal to half the actual limiting distance shall be used as input to the requirements of this Subsection, where

a) the time from receipt of notification of a fire by the fire department until the first fire department vehicle arrives at the building exceeds 10 min in 10 per cent 10 min in 10% or more of all calls to the building, and

b) any storey in the building is not sprinklered.

(See A-3.2.3. and A-3.2.3.1.(8) in Appendix A.)

2) Deleted.

BC2012  2013-04-03 R2BC2012  2012-01-01 R1

2) Deleted.Except for the purpose of applying Sentences 9.10.15.2.(2), Sentence 9.10.15.4.(3) and 9.10.15.5.(12), a limiting distance equal to half the actual limiting distance shall be used as input to the requirements of this Subsection, where

a) a building for which a building permit was applied for before December 20, 2014 is or is proposed to be located in a subdivision for which a subdivision plan was registered in a land title office before December 20, 2013,

b) there is no fire department or the fire department is not organized, trained and equipped to meet the needs of the community, and

c) the building is not sprinklered.

2) Deleted.Despite Sentence 9.10.15.3.(1), except for the purposes of applying Sentences 9.10.15.2.(2), Sentence 9.10.15.4.(3) and 9.10.15.5.(12), a limiting distance equal to half the actual limiting distance shall be used as input to the requirements of this Subsection, where

a) a building for which a building permit was applied for before December 20, 2014 is or is proposed to be located in a subdivision for which a subdivision plan was registered in a land title office before December 20, 2013,

b) there is no fire department or the fire department is not organized, trained and equipped to meet the needs of the community, and

c) the building is not sprinklered.

9.10.15.4. Unprotected Openings in Exposing Building Face

1) Except as provided in Sentences (6), (7) and (8), the maximum aggregate area of unprotected openings in an exposing building face shall

a) conform to Table 9.10.15.4.,

b) in a building which conforms to Sentence (8), comply with Subsection 3.2.3., or

c) where the limiting distance is not less than 1.2 m, be equal to or less than the limiting distance squared.

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1) Except as provided in Sentences (6), (7) and (8), the maximum aggregate area of unprotected openingsglazedopenings in an exposing building face shall

a) conform to Table 9.10.15.4.,

b) in a building which conforms to Sentence (8), comply with Subsection 3.2.3., orconform to Subsection 3.2.3., or

c) where the limiting distance is not less than 1.2 m, be equal to or less than the limiting distance squared.

2) Where the limits on the area of unprotected openings are determined for individual portions of the exterior wall, as described in Subclause 9.10.15.2. (1)(b)(iii), the maximum aggregate area of unprotected openings for any portion shall conform to the values in the row of Table 9.10.15.4. corresponding to the maximum total area of exposing building face (see column 1 of the Table) that is equal to the sum of all portions of the exposing building face. (See Appendix A.)

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2) Where the limits on the area of unprotected openingsglazedopenings are determined for individual portions of the exterior wall, as described in Subclause 9.10.15.2. (1)(b)(iii), the maximum aggregate area of unprotected openingsglazed openings for any portion shall conform to the values in the row of Table 9.10.15.4. corresponding to the maximum total area of exposing building face (see column 1 of the Table) that is equal to the sum of all portions of the exposing building face. (See Appendix A.)

3) Except for buildings that are sprinklered and for openable windows having an unobstructed opening equal to 0.35 m² installed in accordance with Sentences 9.9.10.1.(1) and (2), where the limiting distance is 2 m or less, individual unprotected openings or a group of unprotected openings in an exposing building face shall not exceed 50 per cent of the maximum allowable aggregate area of unprotected openings determined in Sentence (1).

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3) Except for buildings that are sprinklered and for openable windows having an unobstructed opening equal to 0.35 m² installed in accordance with Sentences 9.9.10.1.(1) and (2), where the limiting distance is 2 m or less, individual unprotected openingsglazedopenings or a group of unprotected openingsglazedopenings in an exposing building face shall not exceed 50 per cent 50% of the maximum allowable aggregate area of unprotected openingsglazedopenings determined in Sentence (1).

4) The spacing between individual unprotected openings described in Sentence (3) serving a single room or space described in Sentence (5) shall be not less than

a) 2 m horizontally of another unprotected opening that is on the same exposing building face and serves the single room or space, or

b) 2 m vertically of another unprotected opening that serves the single room or space, or another room or space on the same storey.

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4) The spacing between individual unprotected openingsglazedopenings described in Sentence (3) serving a single room or space described in Sentence (5) shall be not less than

a) 2 m horizontally of another unprotected openingglazedopening that is on the same exposing building face and serves the single room or space, or

b) 2 m vertically of another unprotected openingglazedopening that serves the single room or space, or another room or space on the same storey.

5) For the purpose of Sentence (4), “single room or space” shall mean

a) two or more adjacent spaces having a full-height separating wall extending less than 1.5 m from the interior face of the exterior wall, or

b) two or more stacked spaces that are on the same storey.

6) The limits on the area of unprotected openings shall not apply to the exposing building face of one-family dwelling or two-family dwelling facing a detached garage or accessory building, where

a) the detached garage conforming to Sentence 9.10.15.5.(4) or accessory building serves only one-family dwelling or two-family dwelling,

b) the detached garage conforming to Sentence 9.10.14.5.(4) or accessory building is located on the same property as that one-family dwelling or two-family dwelling, and

c) the one-family dwelling or two-family dwelling served by the detached garage conforming to Sentence 9.10.15.5.(4) or accessory building is the only major occupancy on the property.

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6) The limits on the area of unprotected openingsglazedopenings shall not apply to the exposing building face of one-family dwellinga dwelling unitor two-family dwellingfacing a detached garage or accessory building, where

a) the detached garage conforming to Sentence 9.10.15.5.(4)or accessory building serves only one-family dwellingoneor two-family dwellingdwelling unit,

b) the detached garage conforming to Sentence 9.10.14.5.(4)or accessory building is located on the same property as that one-family dwelling or two-family dwellingdwelling unit, and

c) the one-family dwellingdwelling unitor two-family dwellingserved by the detached garage conforming to Sentence 9.10.15.5.(4)or accessory building is the only major occupancy on the property.

7) If a building is sprinklered and the limiting distance is less than 1.2 m but not less than 1 m, the maximum percentage of unprotected openings shall be 10 per cent provided

a) the windows are glazed with tempered , wired, or laminated glass or glass block, and

b) the exposing building face is constructed according to Sentence 9.10.15.5.(13).

9) If a storage garage has a limiting distance of no less than 3 m, the exposing building face of such storage garage may have unlimited unprotected openings.

Table 9.10.15.4. Maximum Area of Unprotected Openings in Exterior Walls of Houses Forming part of Sentences 9.10.15.4.(1) and (2)
Maximum Total Area of Exposing Building Face, m2	Maximum Aggregate Area of Unprotected Openings, % of Exposing Building Face Area
	Limiting Distance, m
	Less than 1.2	1.2	1.5	2.0	4.0	6.0	8.0	10.0	12.0	16.0	20.0	25.0
30	0	7	9	12	39	88	100	—	—	—	—	—
40	0	7	8	11	32	69	100	—	—	—	—	—
50	0	7	8	10	28	57	100	—	—	—	—	—
100	0	7	8	9	18	34	56	84	100	—	—	—
Over 100	0	7	7	8	12	19	28	40	55	92	100	—

9.10.15.5. Construction of Exposing Building Face of Houses

1) Except as provided in Sentences (4), (12) and (13), each exposing building face and any exterior wall located above an exposing building face that encloses an attic or roof space shall be constructed in conformance with Sentences (2) and (3)

a) for the exposing building face as a whole, or

b) for any number of separate portions of the exposing building face (see Subclause (b)(iii), Sentence 9.10.15.4.(2), and A-9.10.15.4.(2) in Appendix A).

(See also Subsection 9.10.8.)

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1) Except as provided in Sentences (4), (12) and (13), each exposing building face and any exterior wall located above an exposing building face that encloses an attic or roof space shall be constructed in conformance with Sentences (2) and (3)

a) for the exposing building face as a whole, or

b) for any number of separate portions of the exposing building face (see Subclause (b)(iii), Sentence 9.10.15.4.(2), and A-9.10.15.4.(2) in Appendix A).

(See also Subsection 9.10.8.)

2) Except as provided in Sentences (4) and (5), where the limiting distance is less than 0.6 m, the exposing building face and exterior walls located above the exposing building face that enclose an attic or roof space shall have a fire-resistance rating of not less than 45 min, and

a) the cladding shall be metal or noncombustible cladding installed in accordance with Section 9.20., 9.27. or 9.28. (see A-9.10.14.5.(1) in Appendix A),

b) the cladding shall

i) conform to Subsection 9.27.12.,

ii) be installed without furring members over gypsum sheathing at least 12.7 mm thick or over masonry,

iii) have a flame-spread rating not greater than 25 when tested in accordance with Sentence 3.1.12.1.(2), and

iv) not exceed 2 mm in thickness exclusive of fasteners, joints and local reinforcements, or

c) the wall assembly shall comply with Sentences 3.1.5.5.(3) and (4) when tested in conformance with CAN/ULC-S134, “Fire Test of Exterior Wall Assemblies.”

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2) Except as provided in Sentences (4) and (5), where the limiting distance is less than 0.6 m, the exposing building face and exterior walls located above the exposing building face that enclose an attic or roof space shall have a fire-resistance rating of not less than 45 min, and

a) the cladding shall be metal or noncombustible cladding installed in accordance with Section 9.20., 9.27. or 9.28. (see A-9.10.14.5.(1) in Appendix A),

b) the cladding shall

i) conform to Subsection 9.27.12.,

ii) be installed without furring members over gypsum sheathing at least 12.7 mm thick or over masonry,

iii) have a flame-spread rating not greater than 25 when tested in accordance with Sentence 3.1.12.1.(2), and

iv) not exceed 2 mm in thickness exclusive of fasteners, joints and local reinforcements, or

c) the wall assembly shall comply with Sentences 3.1.5.5.(3) and (4) when tested in conformance with CAN/ULC-S134, “Fire Test of Exterior Wall Assemblies.”

3) Except as provided in Sentence (4), where the limiting distance is equal to or greater than 0.6 m and less than 1.2 m, the exposing building face and any exterior wall located above the exposing building face that encloses an attic or roof space shall have a fire-resistance rating of not less than 45 min, and

a) the cladding shall be metal or noncombustible cladding installed in accordance with Section 9.20., 9.27. or 9.28. (See A-9.10.14.5.(1) in Appendix A),

b) the cladding shall

i) conform to Subsection 9.27.6., 9.27.7., 9.27.8., 9.27.9., or 9.27.10.,

ii) be installed without furring members, or on furring not more than 25 mm thick, over gypsum sheathing at least 12.7 mm thick or over masonry, and

iii) after conditioning in conformance with ASTM D 2898, “Accelerated Weathering of Fire-Retardant-Treated Wood for Fire Testing,” have a flame-spread rating not greater than 25 when tested in accordance with Sentence 3.1.12.1.(2),

c) the cladding shall

i) conform to Subsection 9.27.12.,

ii) be installed with or without furring members over gypsum sheathing at least 12.7 mm thick or over masonry,

iii) have a flame-spread rating not greater than 25 when tested in accordance with Sentence 3.1.12.1.(2), and

iv) not exceed 2 mm in thickness exclusive of fasteners, joints and local reinforcements, or

d) the wall assembly shall comply with Sentences 3.1.5.5.(3) and (4) when tested in conformance with CAN/ULC-S134, “Fire Test of Exterior Wall Assemblies.”

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3) Except as provided in Sentence (4), where the limiting distance is equal to or greater than 0.6 m and less than 1.2 m, the exposing building face and any exterior wall located above the exposing building face that encloses an attic or roof space shall have a fire-resistance rating of not less than 45 min, and

a) the cladding shall be metal or noncombustible cladding installed in accordance with Section 9.20., 9.27. or 9.28.(See(seeA-9.10.14.5.(1) in Appendix A),

b) the cladding shall

i) conform to Subsection 9.27.6., 9.27.7., 9.27.8., 9.27.9., or 9.27.10.,

ii) be installed without furring members, or on furring not more than 25 mm thick, over gypsum sheathing at least 12.7 mm thick or over masonry, and

iii) after conditioning in conformance with ASTM D 2898, “Accelerated Weathering of Fire-Retardant-Treated Wood for Fire Testing,” have a flame-spread rating not greater than 25 when tested in accordance with Sentence 3.1.12.1.(2),

c) the cladding shall

i) conform to Subsection 9.27.12.,

ii) be installed with or without furring members over gypsum sheathing at least 12.7 mm thick or over masonry,

iii) have a flame-spread rating not greater than 25 when tested in accordance with Sentence 3.1.12.1.(2), and

iv) not exceed 2 mm in thickness exclusive of fasteners, joints and local reinforcements, or

d) the wall assembly shall comply with Sentences 3.1.5.5.(3) and (4) when tested in conformance with CAN/ULC-S134, “Fire Test of Exterior Wall Assemblies.”

4) The requirements regarding fire-resistance rating and type of cladding-sheathing assembly shall not apply to the exposing building face or projections from an exposing building face of a dwelling unit facing a detached garage or accessory building, or a garage or accessory building facing a dwelling unit, where

a) the detached garage or accessory building serves only one dwelling unit,

b) the detached garage or accessory building is located on the same property as that dwelling unit, and

c) the dwelling unit served by the detached garage or accessory building is the only major occupancy on the property.

5) Except as provided in Sentence (6), combustible projections on the exterior of a wall that are more than 1 m above ground level and that could expose an adjacent building to fire spread shall not be permitted within

a) 1.2 m of a property line or the centre line of a public way, or

b) 2.4 m of a combustible projection on another building on the same property.

6) Except as provided in Sentences (8) to (10), Sentence (5) shall not apply to

a) buildings containing 1 or 2 dwelling units only, and

b) detached garages or accessory buildings, where

i) the detached garage or accessory building serves only one dwelling unit,

ii) the detached garage or accessory building is located on the same property as that dwelling unit, and

iii) the dwelling unit served by the detached garage or accessory building is the only major occupancy on the property.

(See A-9.10.14.5.(7) in Appendix A.)

7) Where combustible projections on an exposing building face are permitted by Sentence (6), are totally enclosed and constructed with solid faces, such as for fireplaces and chimneys, and extend within 1.2 m of a property line,

a) the construction of the face and sides of the projection shall comply with the corresponding requirements for exposing building faces for limiting distances less than 1.2 m as stated in Sentence (2) or (3), and

b) where the underside of the projection is more than 0.6 m above finished ground level, it shall be protected by

i) not less than 0.38 mm thick noncombustible material,

ii) unvented aluminum conforming to CAN/CGSB-93.2-M, “Prefinished Aluminum Siding, Soffits, and Fascia, for Residential Use,”

iii) not less than 12.7 mm thick gypsum soffit board or gypsum ceiling board installed according to CSA A82.31-M, “Gypsum Board Application,”

iv) not less than 11 mm thick plywood,

v) not less than 12.5 mm thick OSB or waferboard, or

vi) not less than 11 mm thick lumber.

(See A-9.10.14.5.(8) in Appendix A.)

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7) Where combustible projections on an exposing building face are permitted by Sentence (6), are totally enclosed and constructed with solid faces, such as for fireplaces and chimneys, and extend within 1.2 m of a property line,

a) the constructionconstruction of the face and sides of the projection shall comply with the corresponding requirements for exposing building faces for limiting distances less than 1.2 m as stated in Sentence (2) or (3), and

b) where the underside of the projection is more than 0.6 m above finished ground level, it shall be protected by

i) not less than 0.38 mm thick noncombustible material,

ii) unvented aluminum conforming to CAN/CGSB-93.2-M, “Prefinished Aluminum Siding, Soffits, and Fascia, for Residential Use,”

iii) not less than 12.7 mm thick gypsum soffit board or gypsum ceiling board installed according to CSA A82.31-M, “Gypsum Board Application,”

iv) not less than 11 mm thick plywood,

v) not less than 12.5 mm thick OSB or waferboard, or

vi) not less than 11 mm thick lumber.

(See A-9.10.14.5.(8) in Appendix A.)

8) Where the exposing building face has a limiting distance of not more than 0.45 m, projecting roof soffits shall not be constructed above the exposing building face. (See A-3.2.3.6.(2) in Appendix A.)

9) Where the exposing building face has a limiting distance of more than 0.45 m, the face of roof soffits above the exposing building face shall not project to less than 0.45 m from the property line. (See A-3.2.3.6.(2) in Appendix A.)

10) Roof soffits located within 1.2 m of a property line or the centre line of a public way, or located within 1.2 m of an imaginary line between two buildings or two fire compartments on the same property, shall

a) have no openings, and

b) be protected by

i) no less than 0.38 mm thick sheet steel,

ii) unvented aluminum conforming to CAN/CGSB-93.2-M, “Prefinished Aluminum Siding, Soffits, and Fascia, for Residential Use,”

iii) no less than 12.7 mm thick gypsum soffit board or gypsum ceiling board installed according to CSA A82.31-M, “Gypsum Board Application,”

iv) no less than 11 mm thick plywood,

v) no less than 12.5 mm thick OSB or waferboard, or

vi) no less than 11 mm thick lumber.

(See A-3.2.3.6.(2) in Appendix A.)

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10) Roof soffits located within Where roof soffits project to less than 1.2 mof afrom the property line or , the centre line of a public way, or located within 1.2 mlane or public thoroughfare orof an imaginary line between two buildings or two fire compartments on the same property, they shall

a) have no openings, and

b) be protected by

i) nonot less than 0.38 mm thick sheet steel,

ii) unvented aluminum conforming to CAN/CGSB-93.2-M, “Prefinished Aluminum Siding, Soffits, and Fascia, for Residential Use,”

iii) nonot less than 12.7 mm thick gypsum soffit board or gypsum ceiling board installed according to CSA A82.31-M, “Gypsum Board Application,”

iv) nonot less than 11 mm thick plywood,

v) nonot less than 12.5 mm thick OSB or waferboard, or

vi) nonot less than 11 mm thick lumber.

(See A-3.2.3.6.(2) in Appendix A.)