| 3.3.4. |
Residential Occupancy |
| 3.3.4.1. |
Scope
- This Subsection applies to residential occupancies.
|
| 3.3.4.2. |
Fire Separations
- Except as permitted by Sentences (2) and 3.2.2.9.(2), suites of residential occupancy shall be separated from each other and the remainder of the building by a fire separation having a fire-resistance rating not less than 1 h.
- The fire-resistance rating of the fire separation required by Sentence (1) is permitted to be less than 1 h but not less than 45 min provided the fire-resistance rating required by Subsection 3.2.2. is permitted to be less than 1 h for
- the floor assembly above the floor area, or
- the floor assembly below the floor area, if there is no floor assembly above.
- Floor assemblies within a dwelling unit need not be constructed as fire separations provided
- the distance between the lowest floor level and the uppermost floor level within the dwelling unit is not more than 6 m, and
- the dwelling unit is separated from the remainder of the building by a fire separation having a fire-resistance rating not less than
- 1 h if the building is not sprinklered throughout,
- 45 min if the building is sprinklered throughout and it is not more than 3 storeys in building height, or
- 1 h if the building is sprinklered throughout and it is more than 3 storeys in building height.
- The fire-resistance rating of the fire separation required by Sentence 3.3.5.6.(1) is permitted to be waived if the fire separation is located between a dwelling unit and an attached storage garage containing not more than 5 vehicles, provided
- the dwelling unit and the attached storage garage are sprinklered,
- the dwelling unit and the attached storage garage are separated from the remainder of the building in conformance with Sentences (1), (2) and (3),
- there are no air duct systems connecting the storage garage and the dwelling unit,
- the construction between the storage garage and the dwelling unit provides an effective barrier to gas and exhaust fumes, and
- every door between the storage garage and the dwelling unit is
- tight fitting and weather-stripped to provide an effective barrier against the passage of gas and exhaust fumes,
- fitted with a self-closing device, and
- not located in a room intended for sleeping.
- The fire separation required by Sentence 3.3.5.6.(1) is not required between a dwelling unit and an attached storage garage, serving that dwelling unit only, provided
- the dwelling unit and its attached storage garage are separated from the remainder of the building in conformance with Sentences (1), (2) and (3),
- there are no air duct systems connecting the storage garage and the dwelling unit,
- the construction between the storage garage and the dwelling unit provides an effective barrier to gas and exhaust fumes, and
- every door between the storage garage and the dwelling unit is
- tight fitting and weather-stripped to provide an effective barrier against the passage of gas and exhaust fumes,
- fitted with a self-closing device, and
- not located in a room intended for sleeping.
|
| 3.3.4.3. |
Storage Rooms
- Sprinklers shall be installed in a storage room provided for the use of tenants in a residential occupancy within a floor area but not contained within a suite.
- Except as permitted by Sentence (3), a storage room referred to in Sentence (1) shall be separated from the remainder of the building by a fire separation having a fire-resistance rating not less than 1 h.
- The fire-resistance rating of the fire separation required by Sentence (2) is permitted to be less than 1 h but not less than 45 min provided the fire-resistance rating required by Subsection 3.2.2. is permitted to be less than 1 h for
- the floor assembly above the floor area, or
- the floor assembly below the floor area, if there is no floor assembly above.
- Except for the storage of flammable liquids and combustible liquids inside a single-family dwelling unit and garages or sheds attached to these dwelling units, where storage rooms are required by Part 4 of Division B of the NFC for the storage of flammable liquids or combustible liquids in residential occupancies, such rooms shall not be located above or below the first storey.
|
| 3.3.4.4. |
Egress from Dwelling Units
- Single storey dwelling units in an apartment building need not lead to a public corridor or exterior passageway on the same storey provided the dwelling units are served by private stairways leading directly to a public access to exit on the storey
- immediately above, and
- immediately below. (See Note A-3.3.4.4.(1).)
- Except as permitted by Sentences (3) and (4), a dwelling unit containing more than one storey shall have an exit door or an egress door opening directly into a public access to exit from the uppermost storey and from the lowest storey of the dwelling unit so that each of these storeys is served by an exit or egress door located not more than 1.5 m above or below its floor level.
- A single exit is permitted from a dwelling unit provided the exit is an exterior doorway not more than 1.5 m above adjacent ground level and
- it is not necessary to travel up or down more than one storey to reach the exit door, or
- the uppermost floor level opens to a balcony not more than 6 m above adjacent ground level.
- An egress door from either the uppermost storey or the lowest storey of a dwelling unit, as required by Sentence (2), need not be provided if that storey is served by a stairway that
- leads to a public access to exit,
- has no direct access to any other storey in the dwelling unit, and
- is separated from the other storeys in the dwelling unit by a fire separation having a fire-resistance rating not less than 45 min.
- In a building of residential occupancy not more than 3 storeys in building height, a doorway from a dwelling unit is permitted to open directly into an exit stairway provided the dwelling unit has a second and separate means of egress.
- If a dwelling unit has a second and separate means of egress, one means of egress from a dwelling unit is permitted to pass through
- an interior corridor served by a single exit,
- an exterior balcony served by a single exit stairway, or
- an exterior passageway served by a single exit stairway.
|
| 3.3.4.5. |
Automatic Locking Prohibition
- Except for hotels and motels, a door opening onto a public corridor which provides access to exit from a suite shall be designed not to lock automatically. (See Note A-3.3.4.5.(1).)
|
| 3.3.4.6. |
Sound Transmission
- Occupants of dwelling units shall be protected from airborne noise in conformance with Section 5.8.
|
| 3.3.4.7. |
Stairs, Ramps, Landings, Handrails and Guards for Dwelling Units
- Except as required in Article 3.3.4.8., stairs, ramps, landings, handrails and guards within a dwelling unit shall conform to the appropriate requirements in Section 9.8.
- Exterior stairs, ramps, landings, handrails and guards serving a single dwelling unit, and loads on guards serving not more than two dwelling units, shall conform to the appropriate requirements in Section 9.8.
|
| 3.3.4.8. |
Protection of Openable Windows
- Except as provided in Sentence (2), openable windows in suites of residential occupancy shall be protected by
- a guard with a minimum height of 1 070 mm constructed in accordance with Article 3.3.1.18., or
- a mechanism capable of controlling the free swinging or sliding of the openable part of the window so as to limit any clear unobstructed opening to not more than 100 mm measured either vertically or horizontally where the other dimension is greater than 380 mm.
- Windows need not be protected in accordance with Sentence (1) where
- the only opening having greater dimensions than those allowed by Clause (1)(b) is located higher than 1 070 mm above the finished floor, or
- the bottom edge of the openable portion of the window is located less than 1 800 mm above the floor or ground on the other side of the window.
|