| 1.3.3. |
Application of Division B |
| 1.3.3.1. |
Application of Parts 1, 7 and 8
- Parts 1, 7 and 8 of Division B apply to all buildings covered in this Code. (See Article 1.1.1.1.)
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| 1.3.3.2. |
Application of Parts 3, 4, 5 and 6
- Parts 3, 4, 5, and 6 of Division B apply to all buildings described in Article 1.1.1.1. and
- classified as post-disaster buildings,
- used for major occupancies classified as
- Group A, assembly occupancies,
- Group B, care, treatment or detention occupancies, or
- Group F, Division 1, high-hazard industrial occupancies, or
- exceeding 600 m2 in building area or exceeding 3 storeys in building height used for major occupancies classified as
- Group C, residential occupancies,
- Group D, business and personal services occupancies,
- Group E, mercantile occupancies, or
- Group F, Divisions 2 and 3, medium- and low-hazard industrial occupancies.
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| 1.3.3.3. |
Application of Part 9
- Part 9 of Division B applies to all buildings described in Article 1.1.1.1. of 3 storeys or less in building height, having a building area not exceeding 600 m2, and used for major occupancies classified as
- Group C, residential occupancies (see Note A-9.1.1.1.(1) of Division B),
- Group D, business and personal services occupancies,
- Group E, mercantile occupancies, or
- Group F, Divisions 2 and 3, medium- and low-hazard industrial occupancies.
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| 1.3.3.4. |
Building Size Determination
- Where a firewall divides a building, each portion of the building so divided shall be considered as a separate building, except when this requirement is specifically modified in other parts of this Code. (See Note A-1.3.3.4.(1).)
- Except as permitted in Sentence (3), where portions of a building are completely separated by a vertical fire separation that has a fire-resistance rating of not less than 1 h and extends through all storeys and service spaces of the separated portions, each separated portion is permitted to be considered as a separate building for the purpose of determining building height, provided
- each separated portion is not more than 4 storeys in building height and is used only for assembly, residential, and business and personal services occupancies, and
- the unobstructed path of travel for a firefighter from the nearest street to one entrance of each separated portion is not more than 45 m.
(See Note A-1.3.3.4.(2).)
- The vertical fire separation referred to in Sentence (2) may terminate at the floor assembly immediately above a basement provided the basement conforms to Article 3.2.1.2. of Division B.
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