jswizzle3737/ontario_laws_and_regs huggingface dataset:
Notes to Table 9.8.8.2.:
9.10.2.5. Restaurants (1) A restaurant is permitted to be classified as a Group E major occupancy provided such restaurant is designed to accommodate not more than 30 persons consuming food or drink. 9.10.3. Ratings
Notes to Table 9.8.8.2.:
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, or in accordance with Supplementary Standard SB-2 or SB-3.
Notes to Table 9.8.8.2.:
9.10.3.2. Flame-Spread Rating (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 Supplementary Standard SB-2. (2) Unless the flame-spread rating is referred to in this Part 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.
Notes to Table 9.8.8.2.:
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 1 200 mm, and due allowance is made for the effects of heat radiation in accordance with the requirements in Part 3. (3) Firewalls and interior vertical fire separations required to have fire-resistance ratings shall be rated for exposure to fire on each side.
Notes to Table 9.8.8.2.:
9.10.4.1. Mezzanines not Considered as Storeys (1) Mezzanines shall not be considered as storeys for the purpose of determining building height where the aggregate area of mezzanine floors does not exceed 10% of, (a) the suite in which it is located, where there is more than one suite in the storey, or (b) the storey in which it is located, in all other cases. (2) Mezzanines shall not be considered as storeys for the purpose of determining building height where they occupy an aggregate area not exceeding 40% of the area of the room or the storey in which they are located provided the space above the mezzanine floor has no visual obstructions more than 1 070 mm above such floors.
Notes to Table 9.8.8.2.:
9.10.4.3. Basement Storage Garage (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.
Notes to Table 9.8.8.2.:
9.10.4.4. Roof-Top Enclosures (1) 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. 9.10.5. Permitted Openings in Wall and Ceiling Assemblies
Notes to Table 9.8.8.2.:
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 2 in Supplementary Standard SB-3, 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 in Supplementary Standard SB-2. 9.10.6. Construction Types
Notes to Table 9.8.8.2.:
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.
Notes to Table 9.8.8.2.:
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 3.1.4.6. 9.10.7. Steel Members
Notes to Table 9.8.8.2.:
9.10.7.1. Protection of Structural 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. 9.10.8. Fire-Resistance and Combustibility in Relation to Occupancy, Height and Supported Elements
Notes to Table 9.8.8.2.:
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. Table 9.10.8.1.   Fire Resistance Ratings for Structural Members and Assemblies Forming Part of Sentence 9.10.8.1.(1)  Column 1

Column 2

Column 3

Column 4

Column 5


Major Occupancy

Maximum Building Height, Storeys

Minimum Fire-Resistance Rating by Building Element, min


Floors Except Floors over Crawl Spaces

Mezzanine Floors

Roofs


Residential (Group C)

3

45

45

—


All other occupancies

2

45

—

—


3

45

45

45
Notes to Table 9.8.8.2.:
9.10.8.2. Fire-Resistance Ratings in Sprinklered Buildings (1) Except for roofs that support an occupancy, 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 3.2.4.9.(2), and (b) the operation of the sprinkler system will cause a signal to be transmitted to the fire department in conformance with Sentence 3.2.4.7.(4).
Notes to Table 9.8.8.2.:
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.
Notes to Table 9.8.8.2.:
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.
Notes to Table 9.8.8.2.:
9.10.8.9. Crawl Spaces  (1) Where a crawl space exceeds 1 800 mm 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.
Notes to Table 9.8.8.2.:
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.
Notes to Table 9.8.8.2.:
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
Notes to Table 9.8.8.2.:
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. (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.
Notes to Table 9.8.8.2.:
9.10.9.6. Service Equipment Penetrating a Fire Separation (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. (2) Except as provided in Sentences (3) to (9) and Article 9.10.9.7., pipes, ducts, electrical outlet 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. (3) Electrical wires or other 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 (2). (4) Electrical wires or cables, single or grouped, with combustible insulation or jacketing 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 (2) provided the overall diameter of the wiring is not more than 25 mm. (5) Combustible totally enclosed raceways that 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 (2), where the concrete provides at least 50 mm of cover between the raceway and the bottom of slab. (6) 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 (2) provided the opening through the membrane into the box does not exceed 160 cm². (7) Combustible water distribution piping that has an outside diameter not more than 30 mm is permitted to partly or wholly penetrate a vertical 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 (2) provided the piping is sealed in conformance with Article 3.1.9.1. (8) Combustible sprinkler piping is permitted to penetrate a fire separation provided the fire compartments on each side of the fire separation are sprinklered. (9) Combustible piping for central vacuum systems is permitted to penetrate a fire separation provided the installation conforms to the requirements that apply to combustible piping in Sentences 9.10.9.7.(2) to (6).
Notes to Table 9.8.8.2.:
9.10.9.7. Combustible Piping (1) Except as permitted in Sentences (2) to (6), combustible piping shall not be used where any part of a piping 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 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 firestop system 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 ULC-S115, “Fire Tests for 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 water closet through a concrete floor slab. (5) Combustible piping is permitted, (a) on one side of a vertical fire separation provided it is not located in a vertical shaft, and (b) to penetrate a vertical or horizontal fire separation when the fire compartment on each side of the fire separation is sprinklered. (6) In buildings containing 2 dwelling units only, combustible piping is permitted on one side of a horizontal fire separation.
Notes to Table 9.8.8.2.:
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 2.1.1. of the Supplementary Standard SB-2 for the required fire-resistance rating.
Notes to Table 9.8.8.2.:
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 is permitted to be reduced to 30 min.
Notes to Table 9.8.8.2.:
9.10.9.11. Separation of Residential Occupancies (1) Except as provided in Sentences (2) and (4), 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, including live/work units, 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 or live/work units are located in a building containing a mercantile occupancy, such mercantile occupancy shall be separated from the dwelling units or live/work units by a fire separation having not less than 1 h fire-resistance rating. (4) The requirement for fire separations between major occupancies in Sentence (1) is waived for the occupancies allowed within live/work units.
Notes to Table 9.8.8.2.:
9.10.9.12. Residential Suites, Live/Work Units and Industrial Buildings (1) Except as provided in Sentence (2), not more than 1 suite of residential occupancy shall be contained within a building classified as a Group F, Division 2 major occupancy. (2) Except where a Group F Division 2 major occupancy is directly related to live/work units, not more than one suite of residential occupancy shall be contained within a building classified as Group F, Division 2 major occupancy.
Notes to Table 9.8.8.2.:
9.10.9.13. Separation of Suites (1) Except as required in Article 9.10.9.14., and as permitted by Sentence (2), each suite in other than business and personal services occupancies shall 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 Sentence 3.3.1.4.(4) are not required to be separated from each other by fire separations.
Notes to Table 9.8.8.2.:
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. (2) Sleeping rooms in boarding, lodging or rooming houses where sleeping accommodation is provided for not more than 8 boarders or lodgers shall be separated from the remainder of the floor area by a fire separation having a fire-resistance rating of not less than 30 min 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.
Notes to Table 9.8.8.2.:
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. (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 3.2.4.9.(2), and (c) the operation of the sprinkler system will cause a signal to be transmitted to the fire department in conformance with Sentence 3.2.4.7.(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 3.2.4.9.(2), (c) the operation of the sprinkler system will cause a signal to be transmitted to the fire department in conformance with Sentence 3.2.4.7.(4), and (d) the corridor exceeds 5 m in width.
Notes to Table 9.8.8.2.:
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) 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. (5) Where membrane materials are used to provide the required airtightness in the air barrier system, all joints shall be sealed and structurally supported.
Notes to Table 9.8.8.2.:
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) 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 air barrier to gas and exhaust fumes. (5) Where membrane materials are used to provide the required airtightness in the air barrier system, all joints shall be sealed and structurally supported.
Notes to Table 9.8.8.2.:
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.
Notes to Table 9.8.8.2.:
9.10.9.19. Central Vacuum Systems (1) A central vacuum system shall serve not more than one suite. 9.10.10. Service Rooms
Notes to Table 9.8.8.2.:
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.
Notes to Table 9.8.8.2.:
9.10.10.3. Separation of Service Rooms (1) Except as required 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.
Notes to Table 9.8.8.2.:
9.10.10.4. Appliances and Equipment to be Located in a Service Room (1) Except as provided in Sentence (2) and Article 9.10.10.5., fuel-fired appliances other than fireplaces 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) and 9.33.1.2.(1), fuel-fired space-heating appliances, space-cooling appliances and service water heaters need not be separated from the remainder of the building as required in Sentence (1) where the equipment serves, (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.
Notes to Table 9.8.8.2.:
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, 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.
Notes to Table 9.8.8.2.:
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.
Notes to Table 9.8.8.2.:
9.10.10.7. Emergency Power Installations  (1) A generator to supply emergency power for lighting and fire safety systems shall be located in a room that, (a) is separated from the remainder of the building by a fire separation with a fire-resistance rating not less than, (i) 1 h, if the floor assembly is not required to have a fire-resistance rating of more than 1 h, and (ii) 2 h, if the floor assembly is required to have a fire-resistance rating of more than 1 h, and (b) contains only the generating set and equipment that is related to the emergency power supply system. 9.10.11. Firewalls
Notes to Table 9.8.8.2.:
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. (2) The wall described in Sentence (1) shall provide continuous protection from the top of the footings to the underside of the roof deck. (3) 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.
Notes to Table 9.8.8.2.:
9.10.11.3. Construction of Firewalls (1) Where firewalls are used, the requirements in Part 3 shall apply.
Notes to Table 9.8.8.2.:
9.10.11.4. Firewalls in Detached Garages (1) Where a garage is detached from the dwelling unit but attached to another garage on the adjacent property, the party wall so formed shall be constructed as a fire separation having a fire-resistance rating of not less than 45 min. 9.10.12. Prevention of Fire Spread at Exterior Walls and Between Storeys
Notes to Table 9.8.8.2.:
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.
Notes to Table 9.8.8.2.:
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 less than 135°, the horizontal distance from an opening in one wall to an opening in the other wall shall be not less than 1 200 mm where the openings are in different fire compartments. (2) The exterior wall of each fire compartment referred to in Sentence (1) within the 1 200 mm 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.
Notes to Table 9.8.8.2.:
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. (2) Except as provided in Sentences (4) and (5), the soffit described in Sentence (1) 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 storeys, 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. (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. (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 the attic or roof space by fire stopping, 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 in 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 3.2.5.13. 9.10.13. Doors, Dampers and Other Closures in Fire Separations
Notes to Table 9.8.8.2.:
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 NFPA 80, “Fire Doors and Other Opening Protectives”, unless otherwise specified in this Part. Table 9.10.13.1.   Fire-Protection Ratings for Closures Forming Part of Sentence 9.10.13.1.(1)  Column 1

Column 2


Required Fire-Resistance Rating of Fire Separation

Required Fire-Protection Rating of Closure


30 or 45 min

20 min(1)


1 h

45 min(1)


1.5 h

1 h


2 h

1.5 h


3 h

2 h


4 h

3 h
Notes to Table 9.10.13.1.:
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 or between a public corridor and a suite provided 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”. (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.
Notes to Table 9.10.13.1.:
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 at least 38 mm thickness where the frame has not been tested and rated.
Notes to Table 9.10.13.1.:
9.10.13.5. Wired Glass as a Closure (1) Wired glass conforming to Article 9.7.3.1. that 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 minimum 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 1 400 mm in height or width, and the area of glass not structurally supported by mullions shall not exceed 7.5 m².
Notes to Table 9.10.13.1.:
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”.
Notes to Table 9.10.13.1.:
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.
Notes to Table 9.10.13.1.:
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, if a fire compartment on either side of the fire separation is not sprinklered. (2) The size of an opening in an interior fire separation, 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.
Notes to Table 9.10.13.1.:
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 devices are not required between public corridors and suites in business and personal services occupancies, except in, (a) dead-end corridors, or (b) a corridor that serves a hotel.
Notes to Table 9.10.13.1.:
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.
Notes to Table 9.10.13.1.:
9.10.13.13. Fire Dampers (1) Except as permitted in 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 0.013 m², and (c) supplies only air-conditioning units or combined air-conditioning and heating units discharging air at not more than 1 200 mm 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 air flow 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 at least 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.
Notes to Table 9.10.13.1.:
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 Supplementary Standard SB-2.
Notes to Table 9.10.13.1.:
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 weatherstripped to provide an effective barrier against the passage of gases 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.
Notes to Table 9.10.13.1.:
9.10.14.3. Inadequate Fire Fighting Facilities (1) Where there is no fire department or where a fire department is not organized, trained and equipped to meet the needs of the community, the required limiting distance determined from Sentences 9.10.14.4.(2), (5) and (6) and Sentence 9.10.14.5.(6), shall be doubled for a building that is not sprinklered.
Notes to Table 9.10.13.1.:
9.10.15.1. Application  (1) This Subsection applies to buildings that, (a) contain only dwelling units and have no dwelling unit above another dwelling unit, and (b) are not designed in accordance with Subsection 9.10.14.
Notes to Table 9.10.13.1.:
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) where Table 9.10.15.4. is used to determine maximum area of glazed openings, the area of any number of individual vertical portions of the wall measured from the finished ground level to the uppermost ceiling. (2) For the purpose of using Table 9.10.15.4. to determine the maximum permitted area of glazed 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 glazed openings between the vertical plane and the line to which the limiting distance is measured. (3) For the purpose of using Table 9.10.15.5. 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 aggregate area of glazed openings in Table 9.10.15.5. shall be determined using the limiting distance measured from the location described in Clause (a). (4) The required limiting distance for an exposing building face is permitted to be measured to a point beyond the property line that is not the centre line of a street, lane or public thoroughfare if, (a) the owners of the properties on which the limiting distance is measured and the municipality enter into an agreement in which such owners agree that, (i) each owner covenants that, for the benefit of land owned by the other covenantors, the owner will not construct a building on his or her property unless the limiting distance for exposing building faces in respect of the proposed construction is measured in accordance with the agreement, (ii) the covenants contained in the agreement are intended to run with the lands, and the agreement shall be binding on the parties and their respective heirs, executors, administrators, successors and assigns, (iii) the agreement shall not be amended or deleted from title without the consent of the municipality, and (iv) they will comply with such other conditions as the municipality considers necessary, including indemnification of the municipality by the other parties, and (b) the agreement referred to in Clause (a) is registered against the title of the properties to which it applies. (5) Where an agreement referred to in Sentence (4) is registered against the title of a property, the limiting distance for exposing building faces in respect of the construction of any buildings on the property shall be measured to the point referred to in the agreement.
Notes to Table 9.10.13.1.:
9.10.15.3. Inadequate Fire fighting Facilities (1) Where there is no fire department or where a fire department is not organized, trained and equipped to meet the needs of the community, the required limiting distance determined from Sentences 9.10.15.4.(2) and (5) and Sentence 9.10.15.5.(6), shall be doubled for a building that is not sprinklered.
Notes to Table 9.10.13.1.:
9.10.15.4. Glazed Openings in Exposing Building Face (1) Except as provided in Sentences (3) to (5), the maximum area of glazed openings in an exposing building face shall, (a) conform to Table 9.10.15.4., (b) conform to Subsection 3.2.3. as if the glazed openings were unprotected openings, or (c) be equal to or less than the limiting distance squared. (2) Where the limits on the area of glazed 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 glazed openings for any portion shall not exceed the values in the row of Table 9.10.15.4. for the total area of the entire exposing building face based on the limiting distance of the individual portion. (3) The limits on area of glazed openings shall not apply to the exposing building face of a dwelling unit facing a detached garage or accessory building 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. (4) Except as permitted in Sentence (5), 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. (5) An opening in an exposing building face not more than 130 cm2 shall not be considered an unprotected opening. Table 9.10.15.4.   Maximum Area of Glazed Openings in Exterior Walls of Buildings Containing Only Dwelling Units Forming Part of Sentence 9.10.15.4.(1)  Column 1

2

3

4

5

6

7

8

9

10

11

12

13

14

15


Maximum Total Area of Exposing Building Face, m² 

Maximum Aggregate Area of Glazed Openings, % of Exposing Building Face Area


Limiting Distance, m


Less than 1.2

1.2 

1.5

2

2.5

3

4

6

8

10

12

16

20

25


10

0

8

12

21

33

55

96

100

—

—

—

—

—

—


15

0

8

10

17

25

37

67

100

—

—

—

—

—

—


20

0

8

10

15

21

30

53

100

—

—

—

—

—

—


25

0

8

9

13

19

26

45

100

—

—

—

—

—

—


30

0

7

9

12

17

23

39

88

100

—

—

—

—

—


40

0

7

8

11

15

20

32

69

100

—

—

—

—

—


50

0

7

8

10

14

18

28

57

100

—

—

—

—

—


100

0

7

8

9

11

13

18

34

56

84

100

—

—

—


Over 100 

0

7

7

8

9

10

12

19

28

40

55

92

100

—
Notes to Table 9.10.13.1.:
9.10.16.1. Required Fire Stops in Concealed Spaces (1) Concealed spaces in interior walls, ceilings and crawl spaces shall be separated by fire stops from concealed spaces in exterior walls and attic or roof spaces. (2) Fire stops shall be provided at all interconnections between concealed vertical and horizontal spaces in interior coved ceilings, drop ceilings and soffits where the exposed construction materials within the concealed spaces have a surface flame-spread rating greater than 25. (3) Fire stops shall be provided at the top and bottom of each run of stairs where they pass through a floor containing concealed space in which the exposed construction materials within the space have a surface flame-spread rating greater than 25. (4) In unsprinklered buildings of combustible construction, every concealed space created by a ceiling, roof space or unoccupied attic space shall be separated by fire stops into compartments of not more than 300 m² in area where such space contains exposed construction materials having a surface flame-spread rating greater than 25. (5) No dimension of the concealed space described in Sentence (4) shall exceed 20 m. (6) Concealed spaces in mansard or gambrel style roofs, exterior cornices, balconies and canopies of combustible construction in which the exposed construction materials within the space have a surface flame-spread rating exceeding 25 shall have vertical fire stops at intervals of not more than 20 m and at points where such concealed spaces extend across the ends of required vertical fire separations.
Notes to Table 9.10.13.1.:
9.10.16.2. Required Fire Stops in Wall Assemblies (1) Except as permitted in Sentences (2) and (3), fire stops shall be provided to block off concealed spaces within wall assemblies, including spaces created by furring, (a) at each floor level, (b) at each ceiling level where the ceiling contributes to part of the required fire-resistance rating, and (c) at other locations within the wall, so that the distance between fire stops does not exceed 20 m horizontally and 3 m vertically. (2) Fire stops required in Sentence (1) are not required provided, (a) the width of the concealed wall space does not exceed 25 mm, (b) the exposed construction materials within the space are noncombustible, or (c) the exposed construction materials within the space, including insulation, but not including wiring, piping or similar services, have a flame-spread rating of not more than 25. (3) Fire stops required in Sentence (1) are not required provided the wall space is filled with insulation.
Notes to Table 9.10.13.1.:
9.10.16.3. Fire Stop Materials (1) Except as permitted in Sentence (2), fire stops shall be constructed of, (a) not less than 0.38 mm sheet steel, (b) not less than 6 mm asbestos board, (c) not less than 12.7 mm gypsum wallboard, (d) not less than 12.5 mm plywood, OSB or waferboard, with joints having continuous support, (e) no fewer than 2 layers of 19 mm lumber with joints staggered, (f) not less than 38 mm lumber, or (g) materials conforming to Sentence 3.1.11.7.(1). (2) In a building permitted to be of combustible construction, semi-rigid fibre insulation board produced from glass, rock or slag, is permitted to be used to block the vertical space in a double-frame wall assembly formed at the intersection of the floor assembly and the walls, provided the width of the vertical space is not more than 25 mm and the insulation board, (a) has a density not less than 45 kg/m3, (b) is securely fastened to one set of studs, (c) extends from below the bottom of the top plates in the lower storey to above the top of the bottom plate in the upper storey, and (d) completely fills the nominal gap of 25 mm between the headers and between the wall plates.
Notes to Table 9.10.13.1.:
9.10.16.4. Penetration of Fire Stops (1) Where fire stops are pierced by pipes, ducts or other elements, the effectiveness of the fire stops shall be maintained around such elements. 9.10.17. Flame Spread Limits
Notes to Table 9.10.13.1.:
9.10.17.1. Flame Spread Rating of Interior Surfaces (1) Except as otherwise provided in this Subsection, the exposed surface of every interior wall and ceiling, including skylights and glazing, shall have a surface flame-spread rating of not more than 150. (2) Except as permitted in Sentence (3), doors need not conform to Sentence (1) provided they have a surface flame-spread rating of not more than 200. (3) Doors within dwelling units, other than vehicle garage doors, need not conform to Sentences (1) and (2).
Notes to Table 9.10.13.1.:
9.10.17.2. Ceilings in Exits or Public Corridors (1) At least 90% of the exposed surface of every ceiling in an exit or unsprinklered ceiling in a public corridor shall have a surface flame-spread rating of not more than 25.
Notes to Table 9.10.13.1.:
9.10.17.3. Walls in Exits (1) Except as provided in Sentence (2), at least 90% of the exposed surfaces of every wall in an exit shall have a surface flame-spread rating of not more than 25. (2) At least 75% of the wall surface of a lobby used as an exit in Article 9.9.8.5. shall have a surface flame-spread rating of not more than 25.
Notes to Table 9.10.13.1.:
9.10.17.4. Exterior Exit Passageways (1) Where an exterior exit passageway provides the only means of egress from the rooms or suites it serves, the wall and ceiling finishes of that passageway, including the soffit beneath and the guard on the passageway, shall have a surface flame-spread rating of not more than 25, except that up to 10% of the total wall area and 10% of the total ceiling area is permitted to have a surface flame-spread rating of not more than 150.
Notes to Table 9.10.13.1.:
9.10.17.5. Walls in Public Corridors (1) At least 90% of the total wall surface in any unsprinklered public corridor shall have a surface flame-spread rating of not more than 75, or at least 90% of the upper half of such walls shall have a surface flame-spread rating of not more than 25.
Notes to Table 9.10.13.1.:
9.10.17.7. Corridors Containing an Occupancy (1) Where a public corridor or a corridor used by the public contains an occupancy, the interior finish materials used on the walls or ceiling of such occupancy shall have a surface flame-spread rating in conformance with that required for public corridors.