| 9.9.8. |
Exits from Floor Areas |
| 9.9.8.1. |
Measurement of Travel Distance
- Except as provided in Sentences (2) and (3), for the purposes of this Subsection, travel distance means the distance from any point in the floor area to an exit measured along the path of exit travel.
- Where a room or suite is separated from the remainder of the floor area by a fire separation having a fire-resistance rating of at least 45 min or, in a sprinklered building, by a fire separation which is not required to have a fire-resistance rating, the travel distance may be measured from an egress door of the room or suite to the nearest exit.
- Where a public corridor is not less than 9 m wide and conforms to Subclauses 3.4.2.5.(1)(d)(i) to (d)(iv), the travel distance may be determined in accordance with those Subclauses.
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| 9.9.8.2. |
Number of Required Exits
- Except as provided in Sentence (2) and Subsection 9.9.9., at least 2 exits shall be provided from every floor area, spaced so that the travel distance to the nearest exit is not more than
- 40 m in the case of business and personal services occupancies,
- 45 m for all occupancies where the floor area is sprinklered, and
- 30 m for all other occupancies.
- 2) Except as provided in Subsection 9.9.9., a single exit is permitted from each storey in buildings of 1 and 2 storeys in building height provided the floor area and travel distance requirements conform to those required in Article 9.9.7.4. and the total occupant load served by an exit facility does not exceed 60 persons.
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| 9.9.8.3. |
Contribution of Each Exit
- Where more than one exit is required from a floor area, each exit shall be considered as contributing not more than half the required exit width.
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| 9.9.8.4. |
Location of Exits
- Where more than one exit is required from a floor area, at least 2 exits shall be independent of each other and be placed remote from each other along the path of travel between them. (See Note A-9.9.8.4.(1).)
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| 9.9.8.5. |
Exiting through a Lobby
- Not more than one exit from a floor area above or below the first storey is permitted to lead through a lobby.
- The lobby referred to in Sentence (1) shall be not more than 4.5 m above grade, and the path of travel through the lobby to the outdoors shall not exceed 15 m.
- The lobby referred to in Sentence (1) shall conform in all respects to the requirements for exits, except that rooms other than service rooms, storage rooms and rooms of residential or industrial occupancy are permitted to open directly onto such lobby.
- Where the lobby referred to in Sentence (1) and adjacent occupancies that are permitted to open into the lobby are sprinklered, the fire separation between such occupancies and the lobby need not have a fire-resistance rating. (See Note A-3.4.4.2.(2)(e).)
- Passenger elevators are permitted to open onto the lobby referred to in Sentence (1) provided the elevator doors are designed to remain closed except while loading and unloading passengers.
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| 9.9.8.6. |
Mezzanine Means of Egress
- Except as permitted by Sentences (2) and (3), the space above a mezzanine shall be served by means of egress leading to exits accessible at the mezzanine level, on the same basis as floor areas.
- The means of egress from a mezzanine need not conform to Sentence (1), provided
- the mezzanine is not required to terminate at a vertical fire separation, as permitted by Sentence 9.10.12.1.(2),
- the occupant load of the mezzanine is not more than 60,
- the area of the mezzanine does not exceed the area limits stated in Table 9.9.7.4., and
- the distance limits stated in Table 9.9.7.4., measured along the path of travel, are not exceeded from any point on the mezzanine to
- an egress door serving the space that the mezzanine overlooks if the space is served by a single egress door, or
- an egress stairway leading to an access to exit in the space below if that space is required to be served by 2 or more egress doorways in conformance with Sentence 9.9.7.4.(1).
- One of the means of egress from a mezzanine that is not required to terminate at a fire separation, as permitted by Sentence 9.10.12.1.(2), and that exceeds the limits of Sentence (2) is permitted to lead through the room in which the mezzanine is located, provided all other means of egress from that mezzanine lead to exits accessible at the mezzanine level.
- Except as provided in Sentence (2), the maximum travel distance from any point on a mezzanine to the nearest exit shall be not more than
- 40 m in a business and personal services occupancy,
- 45 m in a floor area that is sprinklered throughout, provided it does not contain a high-hazard industrial occupancy, or
c) 30 m in any floor area not referred to in Clauses (a) or (b).
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