jswizzle3737/ontario_laws_and_regs huggingface dataset:
3.1.8.9. Installation of Fire Dampers (1) A fire damper shall be arranged to close automatically upon the operation of a fusible link conforming to ULC-S505, “Standard for Fusible Links for Fire Protection Service”, or other heat-actuated or smoke-actuated device. (2) A heat-actuated device referred to in Sentence (1) shall (a) be located where it is readily affected by an abnormal rise of temperature in the duct, and (b) have a temperature rating approximately 30°C above the maximum temperature that would exist in the system either with the system in operation or shut down. (3) A fire damper shall be installed in the plane of the fire separation so as to stay in place should the duct be dislodged during a fire. (4) A fire damper tested in the vertical or horizontal position shall be installed in the manner in which it was tested. (5) A tightly fitted access door shall be installed for each fire damper to provide access for the inspection of the damper and the resetting of the release device.
3.1.8.10. Twenty-Minute Closures (1) A door assembly having a fire-protection rating not less than 20 min is permitted to be used as a closure in (a) a fire separation not required to have a fire-resistance rating more than 1 h, located between (i) a public corridor and a suite, (ii) a corridor and adjacent sleeping rooms, or (iii) a corridor and adjacent classrooms, offices and libraries in Group A, Division 2 major occupancies, or (b) a fire separation not required to have a fire-resistance rating more than 45 min, located in a building not more than 3 storeys in building height. (2) The requirements for noncombustible sills and combustible floor coverings in NFPA 80, “Standard for Fire Doors and Fire Windows”, do not apply to a door described in Sentence (1). (3) A door described in Sentence (1) shall have a clearance not more than 6 mm at the bottom and not more than 3 mm at the sides and top. (4) In elementary and secondary schools, a door assembly conforming to Articles 9.10.13.2. and 9.10.13.3. is permitted to be used as a closure in a fire separation having a fire-resistance rating of 30 min.
3.1.8.11. Self-Closing Devices (1) Except as provided in Sentences (2) to (5), every door in a fire separation shall be equipped with a self-closing device designed to return the door to the closed position after each use. (2) Self-closing devices need not be provided on doors to freight elevators and dumbwaiters. (3) In a building that is not more than 3 storeys in building height, a self-closing device is not required on a door that is located between a classroom and a corridor providing access to exit from the classroom, except that a self-closing device is required on a door between a hazardous classroom and the corridor in an elementary or secondary school. (4) In a building that is not more than 3 storeys in building height, a self-closing device is not required on a door between a public corridor and an adjacent room or suite of business and personal services occupancy if the door is not located in (a) a dead-end portion of the corridor, or (b) a corridor which serves a hotel. (5) Within a fire compartment in a hospital or nursing home that complies with the requirements of Article 3.3.3.5., a self-closing device is not required on a door that is located between (a) a patient’s or resident’s sleeping room and a corridor serving the patient’s or resident’s sleeping room, or (b) a patient’s or resident’s sleeping room and an adjacent room that serves the patient’s or resident’s sleeping room.
3.1.8.12. Hold-Open Devices (1) A hold-open device is permitted on a door in a required fire separation, other than an exit door in a building more than 3 storeys in building height, and on a door for a vestibule required by Article 3.3.5.7., provided the device is designed to release the door in conformance with Sentences (2) to (7). (2) Except as required by Sentences (3), (5), (6) and (7), a hold-open device permitted by Sentence (1) shall be designed to release by a signal from (a) an automatic sprinkler system, (b) a heat-actuated device, (c) fusible link, or (d) a smoke detector located as described in Appendix B of NFPA 80, “Standard for Fire Doors and Fire Windows”. (3) Except as required by Sentences (4), (5), (6) and (7), a hold-open device permitted by Sentence (1) shall be designed to release upon a signal from a smoke detector located as described in Appendix B of NFPA 80, “Standard for Fire Doors and Fire Windows”, if used on (a) an exit door, (b) a door opening into a public corridor, (c) an egress door referred to in Sentence 3.4.2.4.(2), (d) a door serving (i) an assembly occupancy, (ii) a care or detention occupancy, or (iii) a residential occupancy, or (e) a door required to function as part of a smoke control system. (4) Except as required by Sentences (5), (6) and (7), a hold-open device permitted by Sentence (1) shall be designed to release upon a signal from the building fire alarm system if a fire alarm system is provided, except that this requirement does not apply to (a) a hold-open device on a door located between a corridor used by the public and an adjacent sleeping room in a hospital or nursing home, or (b) a hold-open device that is designed to release by a heat-actuated device or a fusible link in conformance with Sentence (2). (5) Sentences (2) and (3) do not apply in a hospital or nursing home to (a) a door located between a corridor used by the public and an adjacent sleeping room, or (b) paired doors described in Sentence 3.3.3.3.(4). (6) A hold-open device on a door in Clause (5)(a) shall be designed to release the door upon a signal from (a) a smoke detector as required by Sentence 3.2.4.11.(1) for sleeping rooms in Group B occupancies, and (b) the fire alarm system when an alert signal is initiated within the same fire compartment in Sentence 3.3.3.5.(2). (7) A hold-open device on a door in Clause (5) (b) shall be designed to release the door upon a signal from the fire alarm system when an alert signal is initiated within the same fire compartment in Sentence 3.3.3.5.(2). (8) A rolling steel fire door installed as a closure in a fire separation shall be equipped with a hold-open device designed to release the shutter as described in Sentence (2).
3.1.8.13. Door Latches (1) Except as permitted by Article 3.3.3.5., a swing-type door in a fire separation shall be equipped with a positive latching mechanism designed to hold the door in the closed position after each use.
3.1.8.14. Wired Glass and Glass Block (1) Except as permitted by Articles 3.1.8.16. and 3.1.8.17. for the separation of exits, an opening in a fire separation having a fire-resistance rating not more than 1 h is permitted to be protected with fixed wired glass assemblies or glass blocks installed in conformance with NFPA 80, “Standard for Fire Doors and Fire Windows”. (2) Wired glass assemblies permitted by Sentence (1) and assigned a fire protection capability in the Supplementary Guidelines, are permitted to be used as closures in vertical fire separations without being tested in accordance with Sentence 3.1.8.4.(1). (3) Glass blocks permitted by Sentence (1) shall be installed in accordance with Subsection 4.3.2. and reinforced with steel reinforcement in each horizontal joint.
3.1.8.15. Temperature Rise Limit for Doors (1) Except as permitted by Article 3.1.8.17., the maximum temperature rise on the opaque portion of the unexposed side of a door used as a closure in a fire separation in a location shown in Table 3.1.8.15., shall conform to the Table when tested in conformance with Sentence 3.1.8.4.(1).
3.1.8.16. Area Limits for Wired Glass and Glass Block (1) Except as permitted by Article 3.1.8.17., the maximum area of wired glass in a door used in the locations shown in Table 3.1.8.15. shall conform to the Table. (2) Except as permitted by Article 3.1.8.17., the maximum area of glass block and wired glass panels not in a door, used in the locations shown in Table 3.1.8.15., shall conform to the Table. Table 3.1.8.15. Restrictions on Temperature Rise and Glazing for Closures Forming Part Articles of 3.1.8.15. and 3.1.8.16.  Location

Minimum Required Fire-Protection Rating of Door

Maximum Temperature Rise on Opaque Portion of Unexposed Side of Door,   °C

Maximum Area of Wired Glass in Door,   m2

Maximum Aggregate Area of Glass Block and Wired Glass Panels not in Door,   m2


Between a dead-end corridor and an adjacent occupancy where the corridor provides the only access to exit and is required to have a fire-resistance rating

Less than   45 min

No limit

No limit

No limit


45 min

250 after 30 min

0.0645

0.0645


Between an exit enclosure and the remainder of the floor area in buildings not more than 3 storeys in building height

All ratings

No limit

0.8

0.8


Between an exit enclosure and the remainder of the floor area (except as permitted above)

45 min

250 after 30 min

0.0645

0.0645


1.5 h

250 after 1 h

0.0645

0.0645


2 h

250 after 1 h

0.0645

0.0645


In a firewall

1.5 h

250 after 30 min

0.0645

0


2 h

250 after 1 h

0

0


Column 1

2

3

4

5
3.1.8.17. Temperature Rise and Area Limits Waived (1) The temperature rise limits and glass area limits required by Articles 3.1.8.15. and 3.1.8.16. are waived for a closure between an exit enclosure and an enclosed vestibule or corridor provided (a) the vestibule or corridor is separated from the remainder of the floor area by a fire separation having a fire-resistance rating not less than 45 min, (b) the fire separation required by Clause (a) contains no wired glass or glass block within 3 m of the closure into the exit enclosure, and (c) the vestibule or corridor contains no occupancy. 3.1.9.Building Services in Fire Separations and Fire Rated Assemblies
3.1.9.1. Fire Stopping of Service Penetrations (1) Piping, tubing, ducts, chimneys, optical fibre cables, electrical wires and cables, totally enclosed noncombustible raceways, electrical outlet boxes and other similar building services that penetrate a membrane forming part of an assembly required to have a fire-resistance rating, or a fire separation, shall be (a) tightly fitted, or (b) sealed by a fire stop system that, when subjected to the fire test method in CAN4-S115-M, “Standard Method of Fire Tests of Firestop Systems”, has an F rating not less than the fire-protection rating required for closures in the fire separation. (2) Piping, tubing, ducts, chimneys, optical fibre cables, electrical wires and cables, totally enclosed noncombustible raceways, electrical outlet boxes and other similar building services that penetrate a firewall or a horizontal fire separation that is required to have a fire-resistance rating in conformance with Article 3.2.1.2., shall be sealed at the penetration by a fire stop system that, when subjected to the fire test method in CAN4-S115-M, “Standard Method of Fire Tests of Firestop Systems”, has an FT rating not less than the fire-resistance rating for the fire separation.
3.1.9.2. Combustibility of Service Penetrations (1) Except as permitted by Articles 3.1.9.3. and 3.1.9.4., pipes, ducts, electrical outlet boxes, totally enclosed raceways or other similar service equipment that penetrate an assembly required to have a fire-resistance rating shall be noncombustible unless the assembly has been tested incorporating that service equipment.
3.1.9.3. Penetration by Wires, Cables and Outlet Boxes (1) Optical fibre cables and electrical wires and cables in totally enclosed noncombustible raceways are permitted to penetrate an assembly required to have a fire-resistance rating without being incorporated in the assembly at the time of testing as required by Article 3.1.9.2. (2) Except as permitted by Sentence (3), totally enclosed nonmetallic raceways conforming to Article 3.1.5.19., optical fibre cables, and electrical wires and cables, single or grouped, with combustible insulation, jackets or sheathes that conform to the requirements of Clause 3.1.5.17.(1)(a) and that are not installed in totally enclosed noncombustible raceways are permitted to penetrate an assembly required to have a fire-resistance rating without being incorporated in the assembly at the time of testing as required by Article 3.1.9.2., provided the overall diameter of the single or grouped wires or cables, or the raceways is not more than 25 mm. (3) Single conductor metal sheathed cables with combustible jacketing 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 by Article 3.1.9.2., provided the cables are not grouped. (4) 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 by Article 3.1.9.2., provided the concrete cover between the raceway and the bottom of the slab is not less than 50 mm. (5) 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 by Article 3.1.9.2., provided the opening through the membrane into the box is not more than 0.016 m2. (6) Outlet boxes that penetrate opposite sides of a wall assembly shall be offset where necessary to maintain the integrity of the fire separation.
3.1.9.4. Combustible Piping Penetrations (1) Combustible sprinkler piping is permitted to penetrate a fire separation provided the fire compartments on each side of the fire separation are sprinklered. (2) Reserved (3) Except as permitted by Sentences (4) to (8), combustible piping shall not be used if any part of that system penetrates (a) a fire separation required to have a fire-resistance rating, or (b) a membrane that forms part of an assembly required to have a fire-resistance rating. (4) Combustible piping 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 (a) the piping is sealed at the penetration by a fire stop system that has an F rating not less than the fire-resistance rating required for the fire separation when subjected to the fire test method in CAN4-S115-M, “Standard Method of 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, and (b) the piping is not located in a vertical shaft. (5) Combustible drain piping is permitted to penetrate a horizontal fire separation provided it leads directly from a noncombustible water closet through a concrete floor slab. (6) Combustible piping is permitted on one side of a vertical fire separation provided it is not located in a vertical shaft. (7) Combustible piping is permitted to penetrate a vertical or horizontal fire separation provided the fire compartments on each side of the fire separation are sprinklered. (8) Combustible piping not more 25 mm in diameter containing chlorine gas is permitted to penetrate a fire separation between a chlorine gas service room, built in conjunction with a public pool or public spa, and the remainder of the building.
3.1.9.5. Openings through a Membrane Ceiling (1) A membrane ceiling forming part of an assembly assigned a fire-resistance rating on the basis of the Supplementary Guidelines is permitted to be penetrated by openings leading into ducts within the ceiling space provided (a) the ducts are sheet steel, and (b) the amount of openings and their protection conform to the requirements of the Supplementary Guidelines. (2) Fire stop flaps in ceiling membranes required in Sentence (1) shall conform to CAN4-S112.2-M, “Standard Method of Fire Test of Ceiling Firestop Flap Assemblies”.
3.1.9.6. Plenums (1) A ceiling assembly used as a plenum shall conform to Article 3.6.4.3. 3.1.10.Firewalls
3.1.10.1. Prevention of Firewall Collapse (1) Except as permitted by Sentence (2), the connections and supports for structural framing members that are connected to or supported on a firewall and have a fire-resistance rating less than that required for the firewall, shall be designed so that the collapse of the framing members during a fire will not cause the collapse of the firewall. (2) Sentence (1) does not apply to a firewall consisting of two separate wall assemblies each tied to its respective building frame but not to each other, provided each wall assembly is (a) a fire separation having one half of the fire-resistance rating required for the firewall by Sentences 3.1.10.2.(1) and (2), and (b) designed so that the collapse of one wall assembly will not cause collapse of the other. (3) A firewall is permitted to be supported on the structural frame of a building of noncombustible construction provided the supporting frame has a fire-resistance rating not less than that required for the firewall. (4) Piping, ducts and totally enclosed noncombustible raceways shall be installed so that their collapse will not cause collapse of the firewall.
3.1.10.2. Rating of Firewalls (1) A firewall which separates a building or buildings with floor areas containing a Group E or a Group F, Division 1 or 2 major occupancy shall be constructed as a fire separation of noncombustible construction having a fire-resistance rating not less than 4 h, except that where the upper portion of a firewall separates floor areas containing other than Group E or Group F, Division 1 or 2 major occupancies, the fire-resistance rating of the upper portion of the firewall is permitted to be not less than 2 h. (2) A firewall which separates a building or buildings with floor areas containing major occupancies other than Group E or Group F, Division 1 or 2 shall be constructed as a fire separation of noncombustible construction having a fire-resistance rating not less than 2 h. (3) Except for closures, the required fire-resistance rating of a firewall shall be provided by masonry or concrete.
3.1.10.3. Continuity of Firewalls (1) A firewall shall extend from the ground continuously through, or adjacent to, all storeys of a building or buildings so separated, except that a firewall located above a basement storage garage conforming to Article 3.2.1.2. is permitted to commence at the floor assembly immediately above the storage garage. (2) A firewall is permitted to terminate on the underside of a reinforced concrete roof slab provided (a) the roof slab on both sides of the firewall has a fire-resistance rating not less than (i) 1 h if the firewall is required to have a fire-resistance rating not less than 2 h, or (ii) 2 h if the firewall is required to have a fire-resistance rating not less than 4 h, and (b) there are no concealed spaces within the roof slab in that portion immediately above the firewall.
3.1.10.4. Parapets (1) Except as permitted by Sentences (2) and 3.1.10.3.(2), a firewall shall extend above the roof surface to form a parapet not less than (a) 150 mm high for a firewall required to have a fire-resistance rating not less than 2 h, and (b) 900 mm high for a firewall required to have a fire-resistance rating not less than 4 h. (2) A firewall that separates 2 buildings with roofs at different elevations need not extend above the upper roof surface to form a parapet, provided the difference in elevation between the roofs is more than 3 m.
3.1.10.5. Maximum Openings (1) Openings in a firewall shall conform to the size limits described in Article 3.1.8.6. and the aggregate width of openings shall be not more than 25% of the entire length of the firewall.
3.1.10.6. Exposure Protection for Adjacent Walls (1) The requirements of Article 3.2.3.13. shall apply to the external walls of 2 buildings that meet at a firewall at an angle less than 135°.
3.1.10.7. Combustible Projections (1) Combustible material shall not extend across the end of a firewall but is permitted to extend across a roof above a firewall that is terminated in conformance with Sentence 3.1.10.3.(2). (2) If buildings are separated by a firewall, combustible projections on the exterior of one building, including balconies, platforms, canopies, eave projections and stairs, that extend outward beyond the end of the firewall, shall not be permitted within 2 400 mm of combustible projections and window or door openings of the adjacent building. 3.1.11.Fire Stops in Concealed Spaces
3.1.11.1. Separation of Concealed Spaces (1) Concealed spaces in interior wall, ceiling and crawl spaces shall be separated from concealed spaces in exterior walls and attic or roof spaces by fire stops conforming to Article 3.1.11.7.
3.1.11.2. Fire Stopping in Wall Assemblies (1) Except as permitted by Sentence (2), fire stops conforming to Article 3.1.11.7. shall be provided to block off concealed spaces within a wall assembly (a) at every floor level, (b) at every ceiling level where the ceiling forms part of an assembly required to have a fire-resistance rating, and (c) so that the maximum horizontal dimension is not more than 20 m and the maximum vertical dimension is not more than 3 m. (2) Fire stops conforming to Sentence (1) are not required provided (a) the wall space is filled with insulation, (b) the exposed construction materials and any insulation within the wall space are noncombustible, (c) the exposed construction materials and any insulation within the wall space have a flame-spread rating not more than 25 on any exposed surface, or on any surface that would be exposed by cutting through the material in any direction, and fire stops are installed so that the vertical distance between them is not more than 10 m, or (d) the insulated wall assembly contains not more than one concealed air space, and the horizontal thickness of that air space is not more than 25 mm.
3.1.11.3. Fire Stopping between Nailing and Supporting Elements (1) In a building required to be of noncombustible construction, a concealed space in which there is an exposed ceiling finish with a flame-spread rating more than 25, shall be provided with fire stops conforming to Article 3.1.11.7. between wood nailing elements, so that the maximum area of the concealed space is not more than 2 m2. (2) In a building required to be of noncombustible construction, fire stops conforming to Article 3.1.11.7. shall be provided in the concealed spaces created by the wood members permitted by Sentence 3.1.5.8.(2) so that the maximum area of a concealed space is not more than 10 m2.
3.1.11.4. Fire Stopping between Vertical and Horizontal Spaces (1) Fire stops conforming to Article 3.1.11.7. shall be provided (a) at all interconnections between concealed vertical and horizontal spaces in interior coved ceilings, drop ceilings and soffits in which the exposed construction materials within the space have a flame-spread rating more than 25, and (b) at the end of each run and at each floor level in concealed spaces between stair stringers in which the exposed construction materials within the space have a flame-spread rating more than 25.
3.1.11.5. Fire Stopping of Roof Spaces, Balconies and Canopies (1) A concealed space within a ceiling or roof assembly of combustible construction, including an attic or roof space, in which sprinklers are not installed, shall be separated by construction conforming to Article 3.1.11.7. into compartments not more than (a) 600 m2 in area with no dimension more than 60 m if the exposed construction materials within the space have a flame-spread rating not more than 25, and (b) 300 m2 in area with no dimension more than 20 m if the exposed construction materials within the space have a flame-spread rating more than 25. (2) A concealed space in an exterior cornice, a mansard style roof, a balcony or a canopy in which exposed construction materials within the space have a flame-spread rating more than 25, shall be separated by construction conforming to Article 3.1.11.7. (a) at locations where the concealed space extends across the ends of required vertical fire separations, and (b) so that the maximum dimension in the concealed space is not more than 20 m.
3.1.11.6. Fire Stopping of Crawl Spaces (1) A crawl space which is not considered as a basement by Article 3.2.2.9. and in which sprinklers are not installed, shall be separated by construction conforming to Article 3.1.11.7. into compartments not more than 600 m2 in area with no dimension more than 30 m.
3.1.11.7. Fire Stop Materials (1) Except as permitted by Sentences (2) to (4), materials used to separate concealed spaces into compartments shall remain in place and prevent the passage of flames for not less than 15 min when subjected to the standard fire exposure in CAN/ULC-S101-M, “Standard Methods of Fire Endurance Tests of Building Construction and Materials”. (2) Gypsum board not less than 12.7 mm thick and sheet steel not less than 0.38 mm thick need not be tested in conformance with Sentence (1) provided all joints have continuous support. (3) In a building required to be of noncombustible construction, wood nailing elements described in Article 3.1.5.6. need not be tested in conformance with Sentence (1). (4) In a building permitted to be of combustible construction, in a combustible roof system permitted by Sentence 3.1.5.3.(2), and in a raised platform permitted by Sentence 3.1.5.8.(2), materials used to separate concealed spaces into compartments are permitted to be (a) solid lumber not less than 38 mm thick, (b) phenolic bonded plywood, waferboard, or strandboard not less than 12.5 mm thick with joints supported, or (c) two thicknesses of lumber, each not less than 19 mm thick with joints staggered, where the width or height of the concealed space requires more than one piece of lumber not less than 38 mm thick to block off the space. (5) Openings through materials referred to in Sentences (1) to (4) shall be protected to maintain the integrity of the construction. (6) Where materials referred to in Sentences (1) to (4) are penetrated by construction elements or by service equipment, fire stop materials shall be used to seal the penetration. 3.1.12.Flame-Spread Rating and Smoke Developed Classification
3.1.12.1. Determination of Ratings (1) Except as required by Sentence (2) and as permitted by Sentence (3), the flame-spread rating and smoke developed classification of a material, assembly, or structural member shall be determined on the basis of not less than three tests conducted in conformance with CAN/ULC-S102-M, “Standard Method of Test for Surface Burning Characteristics of Building Materials and Assemblies”. (2) The flame-spread rating and smoke developed classification of a material or assembly shall be determined on the basis of not less than three tests conducted in conformance with CAN/ULC-S102.2-M, “Standard Method of Test for Surface Burning Characteristics of Flooring, Floor Covering, and Miscellaneous Materials and Assemblies”, if the material or assembly (a) is designed for use in a relatively horizontal position with only its top surface exposed to air, (b) cannot be tested in conformance with Sentence (1) without the use of supporting material that is not representative of the intended installation, or (c) is thermoplastic. (3) A material, assembly, or structural member is permitted to be assigned a flame-spread rating and smoke developed classification on the basis of the Supplementary Guidelines. 3.1.13.Interior Finish
3.1.13.1. Interior Finish Description (1) Interior finish material shall include any material that forms part of the interior surface of a floor, wall, partition or ceiling, including (a) interior cladding of plaster, wood or tile, (b) surfacing of fabric, paint, plastic, veneer or wallpaper, (c) doors, windows and trim, (d) lighting elements such as light diffusers and lenses forming part of the finished surface of the ceiling, and (e) carpet material that overlies a floor that is not intended as the finished floor.
3.1.13.2. Flame-Spread Rating (1) Except as otherwise required or permitted by this Subsection, the flame-spread rating of interior wall and ceiling finishes, including glazing and skylights, shall be not more than 150 and shall conform to Table 3.1.13.2. Table 3.1.13.2. Flame-Spread Ratings Forming Part of Sentence 3.1.13.2.(1)  Occupancy, Location or Element

Maximum Flame-Spread Rating for Walls and Ceilings


Sprinklered

Not Sprinklered


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

150

75


Group B occupancies

150

NA


Exits(1)

25

25


Lobbies described in Sentence 3.4.4.2.(2)

25

25


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

25

25


Vertical service spaces

25

25


Column 1

2

3 Note to Table 3.1.13.2.: (1)See Articles 3.1.13.8. and 3.1.13.10. (2) Except as permitted by Sentence (3), doors, other than those in Group A, Division 1 occupancies, need not conform to Sentence (1) provided they have a flame-spread rating not more than 200. (3) Doors within a dwelling unit need not conform to Sentences (1) and (2). (4) Up to 10% of the total wall area and 10% of the total ceiling area of a wall or ceiling finish that is required by Sentence (1) to have a flame-spread rating less than 150 is permitted to have a flame-spread rating not more than 150, except that up to 25% of the total wall area of lobbies described in Sentence 3.4.4.2.(2) is permitted to have a flame-spread rating not more than 150. (5) Except in the case of Group A, Division 1 occupancies, combustible doors, skylights, glazing and light diffusers and lenses shall not be considered in the calculation of wall and ceiling areas described in Sentence (4).
3.1.13.3. Bathrooms and Plumbing Fixtures (1) The flame-spread rating of interior wall and ceiling finishes for a bathroom in a suite of residential occupancy shall be not more than 200. (2) Plumbing fixtures shall have a flame-spread rating not more than 200.
3.1.13.4. Light Diffusers and Lenses (1) The flame-spread rating of combustible light diffusers and lenses in all occupancies other than Group A, Division 1 is permitted to be more than the flame-spread rating limits required elsewhere in this Subsection, provided the light diffusers and lenses (a) have a flame-spread rating not more than 250 and a smoke developed classification not more than 600 when tested in conformance with CAN/ULC-S102.2-M, “Standard Method of Test for Surface Burning Characteristics of Flooring, Floor Covering, and Miscellaneous Materials and Assemblies”, (b) fall to the bottom of the test apparatus before igniting when tested in conformance with ULC-S102.3-M, “Standard Method of Fire Test of Light Diffusers and Lenses”, (c) are not prevented from falling from the ceiling by construction located beneath the elements, and (d) are not used in a corridor that is required to be separated from the remainder of the building by a fire separation or in an exit shaft unless individual diffusers or lenses are not more than 1 m2 in area and are not less than 1 200 mm apart.
3.1.13.5. Skylights (1) Individual combustible skylights in a corridor that is required to be separated from the remainder of the building by a fire separation shall be not more than 1 m2 in area and not less than 1 200 mm apart.
3.1.13.6. Corridors (1) Except as permitted by Sentences (2) and (3), the flame-spread rating shall be not more than 75 for the interior wall finish of (a) a public corridor, (b) a corridor used by the public in (i) an assembly occupancy, or (ii) a care or detention occupancy, (c) a corridor serving classrooms, or (d) a corridor serving sleeping rooms in a care or detention occupancy. (2) The flame-spread rating limit specified in Sentence (1) does not apply to corridors referred to in Sentence (1) provided the flame-spread rating is not more than (a) 25 on the upper half of the wall, and (b) 150 on the lower half of the wall. (3) The flame-spread rating limits specified in Sentences (1) and (2) for corridors referred to in Sentence (1) does not apply to a corridor in which the flame-spread rating is not more than 150 provided the floor area is sprinklered. (4) The flame-spread rating limits specified in Sentences (1), (2) and (3) apply to occupancies in the corridor as well as to the corridor itself. (5) Except in a floor area that is sprinklered and as permitted in Sentence (6), the interior ceiling finish of corridors and occupancies referred to in Sentences (1) and (4) shall have a flame-spread rating not more than 25. (6) The flame-spread rating limits specified in Sentence (5) do not apply to a corridor in which the flame-spread rating is not more than 150 provided the floor area is sprinklered.
3.1.13.7. High Buildings (1) Except as permitted by Sentences (2) and (3), the interior wall, ceiling and floor finishes in a building regulated by the provisions of Subsection 3.2.6. shall conform to the flame-spread rating requirements in Articles 3.1.13.2. to 3.1.13.6. and to the flame-spread rating and smoke developed classification values in Table 3.1.13.7. Table 3.1.13.7. Flame-Spread Rating and Smoke Developed Classification in a High Building Forming Part of Sentence 3.1.13.7.(1)  Location or Element

Maximum Flame-Spread Rating

Maximum Smoke Developed Classification


Wall Surface

Ceiling Surface(1)

Floor Surface

Wall Surface

Ceiling Surface(1)

Floor Surface


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

25

25

25

50

50

50


Corridors not within suites

(2)

(2)

300

100

50

500


Elevator cars and vestibules

25

25

300

100

100

300


Service spaces and service rooms

25

25

25

50

50

50


Other locations and elements

(2)

(2)

No limit

300

50

No limit


Column 1

2

3

4

5

6

7 Notes to Table 3.1.13.7: (1)See Sentence 3.1.13.4.(1) for lighting elements. (2)Other requirements of this Part apply. (2) Except for a building of Group B major occupancy and elevator cars, the flame-spread rating and smoke developed classification of interior wall, floor and ceiling finishes need not conform to the values in Table 3.1.13.7., provided the building is sprinklered and the sprinkler system is electrically supervised in conformance with Sentence 3.2.6.4.(1). (3) Trim, millwork and doors in an exit stairway, a vestibule to an exit stairway, a lobby described in Sentence 3.4.4.2.(2), or a corridor not within a suite need not conform to the flame-spread rating and smoke developed classification requirements of Sentence (1) provided they have (a) a flame-spread rating not more than 150, (b) a smoke developed classification not more than 300, and (c) an aggregate area not more than 10% of the area of the wall or ceiling on which they occur. (4) Except as permitted in Sentences (5) to (7), plumbing fixtures in a building regulated by the provisions of Subsection 3.2.6. shall have a smoke developed classification not more than 300. (5) A plumbing fixture that is not located in a Group B occupancy need not comply with Sentence (4) if the building is sprinklered. (6) A plumbing fixture may have a smoke developed classification more than 300 but not more than 500 if (a) it is in a room where the wall surfaces have a smoke developed classification not more than 200, and (b) it is located in, (i) a Group C occupancy, or (ii) a Group B occupancy and the building is sprinklered. (7) A therapeutic bathing system in a Group B occupancy need not comply with Sentence (4) if the room in which it is located, (a) does not open directly into patients’ or residents’ sleeping rooms, and (b) is sprinklered.
3.1.13.8. Noncombustible Construction (1) In a building required to be of noncombustible construction (a) the flame-spread ratings required by Subsection 3.1.5. shall apply in addition to the requirements in this Subsection, and (b) the flame-spread ratings for exits in this Subsection shall also apply to any surface in the exit that would be exposed by cutting through the material in any direction, except that this requirement does not apply to doors, heavy timber construction in a sprinklered building and fire-retardant treated wood.
3.1.13.9. Underground Walkways (1) Except for paint, the interior wall and ceiling finishes of an underground walkway shall be of noncombustible materials.
3.1.13.10. Exterior Exit Passageway (1) The wall and ceiling finishes of an exterior exit passageway that provides the only means of egress from the rooms or suites it serves, including the soffit beneath and the guard on the passageway, shall have a flame-spread rating not more than 25, except that a flame-spread rating not more than 150 is permitted for up to 10% of the total wall area and for up to 10% of the total ceiling area. 3.1.14.Roof Assemblies
3.1.14.1. Fire-Retardant Treated Wood Roof Systems (1) If a fire-retardant treated wood roof system is used to comply with the requirements of Subsection 3.2.2., the roof deck assembly shall meet the conditions of acceptance of CAN/ULC-S126-M, “Standard Method of Test for Fire Spread Under Roof-Deck Assemblies”. (2) Supports for the roof deck assembly referred to in Sentence (1) shall consist of (a) fire-retardant treated wood, (b) heavy timber construction, (c) noncombustible construction, or (d) a combination thereof.
3.1.14.2. Metal Roof Deck Assemblies (1) Except as permitted by Sentence (2), a metal roof deck assembly shall meet the conditions of acceptance of CAN/ULC-S126-M, “Standard Method of Test for Fire Spread Under Roof-Deck Assemblies”, if (a) it supports a combustible material above the deck that could propagate a fire beneath the roof deck assembly, and (b) the deck is used to comply with the requirements of Sentences 3.2.2.25.(2), 3.2.2.32.(2), 3.2.2.53.(2), 3.2.2.59.(2), 3.2.2.69.(2) and 3.2.2.76.(2) for noncombustible construction. (2) The requirements of Sentence (1) are waived provided (a) the combustible material above the roof deck is protected by not less than 12.7 mm thick gypsum board, mechanically fastened to a supporting assembly if located beneath the roof deck, or by a thermal barrier conforming to one of Clauses 3.1.5.11.(2)(c) to (e) that is located (i) on the underside of the combustible material, or (ii) beneath the roof deck, (b) the building is sprinklered, or (c) the roof assembly has a fire-resistance rating not less than 45 min. 3.1.15.Roof Covering
3.1.15.1. Roof Covering Classification (1) A roof covering classification shall be determined in conformance with CAN/ULC-S107-M, “Standard Methods of Fire Tests of Roof Coverings”.
3.1.15.2. Roof Coverings (1) Except as permitted by Sentence (2), every roof covering shall have a Class A, B or C classification as determined in accordance with Article 3.1.15.1. (2) A roof covering is not required to have a Class A, B or C classification for (a) a tent, (b) an air-supported structure, or (c) a building of Group A, Division 2 occupancy not more than 2 storeys in building height and not more than 1 000 m2 in building area provided the roof covering is underlaid with noncombustible material. 3.1.16.Occupant Load
3.1.16.1. Occupant Load Determination (1) The occupant load of a floor area or part of a floor area, or of a building or part of a building not having a floor area, shall be based on (a) the number of seats in an assembly occupancy having fixed seats, (b) 2 persons per sleeping room or sleeping area in a dwelling unit or suite, or (c) the number of persons (i) for which the area is designed, or (ii) determined from Table 3.1.16.1. for occupancies other than those described in Clauses (a) and (b). Table 3.1.16.1. Occupant Load Forming Part of Article 3.1.16.1.  Type of Use of Building or Floor Area or Part Thereof

Area per Person,   m2


Assembly uses

 


space with fixed seats

See Clause (1)(a)


space with nonfixed seats

0.75


stages for theatrical performances

0.75


space with nonfixed seats and tables

0.95


standing space

0.40


stadia and grandstands

0.60


bowling alleys, pool and billiard rooms

9.30


classrooms

1.85


school shops and vocational rooms

9.30


reading or writing rooms or lounges

1.85


dining, alcoholic beverage and cafeteria space

1.10


laboratories in schools

4.60


exhibition halls other than those classified in Group E

2.80


Care or detention uses

 


B-1 : detention quarters

11.60


B-2 : treatment and sleeping room areas

10.00


B-3 : sleeping room areas

10.00


(See also Article 3.7.1.3.)

 


Residential uses

 


dwelling units

See Clause (1)(b)


dormitories

4.60


Business and personal services uses

 


personal service shops

4.60


offices

9.30


Mercantile uses

 


basements and first storeys

3.70


second storeys having a principal entrance from a pedestrian thoroughfare or a parking area

3.70


dining, alcoholic beverage and cafeteria space

1.10


other storeys

5.60


Industrial uses

 


manufacturing or process rooms

4.60


storage garages

46.00


storage spaces (warehouse)

28.00


aircraft hangars

46.00


Other uses

 


cleaning and repair of goods

4.60


kitchens

9.30


storage

46.00


public corridors intended for occupancies in addition to pedestrian travel

3.70


Column 1

2 (2) If a floor area or part thereof has been designed for an occupant load other than that determined from Table 3.1.16.1., a permanent sign indicating that occupant load shall be posted in a conspicuous location. (3) For the purposes of this Article, mezzanines, tiers and balconies shall be regarded as part of the floor area. (4) If a room or group of rooms is intended for different occupancies at different times, the value to be used from Table 3.1.16.1. shall be the value which gives the greatest number of persons for the occupancies concerned. (5) Except as provided by Sentences (6) or (7), in dining, alcoholic beverage and cafeteria spaces the occupant load shall be determined from Table 3.1.16.1. (6) The occupant load in Sentence (5) is permitted to be the number of persons for which the space is designed. (7) The occupant load in Sentence (6) shall be not more than that determined by using an area of 0.6 m2 per person.
3.1.16.2. Dance Floor (1) The occupant load of a room in which a dance floor is situated shall be calculated in respect of that portion of the room that is not occupied by the dance floor.
3.1.16.3. Public Pools (1) The occupant load of a public pool, except a wave action pool, shall be determined by the following formula:  where D=the water surface area in square metres of the part of the pool that is deeper than 1 350 mm; and where S=the water surface area in square metres of the part of the pool that is 1 350 mm in depth or less. (2) The occupant load of a wave action pool shall be determined by the following formula:  where D=the water surface area in square metres of the part of the pool where the still water depth is greater than 1 000 mm; and where S=the water surface area in square metres of the part of the pool where the still water depth is 1 000 mm or less. 3.1.17.Drainage and Grades
3.1.17.1. Drainage (1) The building shall be located and the building site graded so that water will not accumulate at or near the building and will not adversely affect any adjacent properties. 3.1.18.Above Ground Electrical Conductors
3.1.18.1. Clearance to Buildings (1) Where a building is to be constructed in proximity to existing above ground electrical conductors of a voltage not less than 2.5 kV and not more than 46 kV (a) the building shall not be located beneath the conductors, and (b) the horizontal distance between the building and the conductors shall be not less than 3 m. (2) Where a building is to be constructed in proximity to existing above ground electrical conductors of a voltage more than 46 kV, the clearances between the building and the conductors shall conform to the requirements of CAN/CSA-C22.3 No.1, “Overhead Systems”.
3.1.18.2. Exception (1) Article 3.1.18.1. does not apply to buildings containing electrical equipment and electrical installations used exclusively in the generation, transformation or transmission of electrical power or energy intended for sale or distribution to the public. Section 3.2.Building Fire Safety 3.2.1.General
3.2.1.1. Exceptions in Determining Building Height (1) A roof-top enclosure provided for elevator machinery, a stairway or a service room used for no purpose other than for service to the building, shall not be considered as a storey in calculating the building height. (2) Space under tiers of seats in a building of the arena type shall not be considered as adding to the building height provided the space is used only for dressing rooms, concession stands and similar purposes incidental to the major occupancy of the building. (3) Except as required in Sentence (4), (5) and (8), a mezzanine shall not be considered as a storey in calculating the building height provided (a) the aggregate area of the mezzanine floor is not more than 40% of the area of the room or storey in which it is located, (b) it is used as an open floor area except as permitted by Sentence 3.3.2.11.(2), and (c) the space above the mezzanine floor has no visual obstructions more than 1 070 mm above the floor. (4) Except as required by Sentence (5), a mezzanine shall not be considered as a storey in calculating building height and need not conform to Sentence (3) provided the aggregate area of the mezzanine floor is not more than 10% of the area 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. (5) Except a permitted by Sentence (8), if one or more levels of mezzanine is partially or wholly superimposed above another mezzanine in the room or storey, each level additional to the first level shall be considered as a storey in calculating the building height. (6) The floor assembly of a mezzanine that is required to be considered as a storey in determining building height, shall be constructed in conformance with the fire separation requirements of Articles 3.2.2.20. to 3.2.2.83. for floor assemblies. (7) A service space in which facilities are included to permit a person to enter and to undertake maintenance and other operations pertaining to building services from within the service space need not be considered a storey if it conforms to Articles 3.2.5.15. and 3.3.1.23., and Sentences 3.2.4.19.(12), 3.2.7.3.(2), 3.3.1.3.(7), 3.4.2.4.(3) and 3.4.4.4.(9). (8) Mezzanines, elevated walkways and platforms in Group F, Division 2 or 3 major occupancies need not be considered as storeys in calculating building height provided (a) the building is of noncombustible construction, (b) except for Clause (c), the mezzanines, elevated walkways and platforms are intended solely for periodic service and maintenance, and (c) where they are intended to be occupied, no mezzanine, elevated walkway or platform shall have an occupant load more than 4 persons.
3.2.1.2. Storage Garage Considered as a Separate Building (1) A basement used primarily as a storage garage is permitted to be considered as a separate building for the purposes of Subsection 3.2.2., provided the floor and roof assemblies 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 not less than 2 h, except as permitted by Sentence (2). (2) The exterior wall of a basement that is required to be a fire separation with a fire-resistance rating in accordance with Sentence (1) is permitted to be penetrated by openings that are not protected by closures provided (a) the storage garage is sprinklered, (b) every opening in the exterior wall is separated from storeys above the opening by a projection of the floor or roof assembly above the basement, extending not less than (i) 1 000 mm beyond the exterior face of the storage garage if the upper storeys are required to be of noncombustible construction, or (ii) 2 000 mm beyond the exterior face of the storage garage if the upper storeys are permitted to be of combustible construction, or (c) the exterior walls of any storeys located above the floor or roof assembly referred to in Sentence (1) are recessed behind the outer edge of the assembly by not less than (i) 1 000 mm if the upper storeys are required to be of noncombustible construction, or (ii) 2 000 mm if the upper storeys are permitted to be of combustible construction. (3) The floor or roof assembly projection referred to in Clause (2)(b) shall have a fire-resistance rating not less than 2 h and shall have no openings within the projection.