Module 5 - Building Area and Occupancy Classification Questions and Answers 100% correct

Module 5 - Building Area and Occupancy Classification Questions and Answers 100% correct 1. The two primary factors for determining which Part and provision of the ABC06 you'll be referencing for a given building are ___________________ and ____________________. 1. Building size (height and area) and major occupancy classification. 2. Define building area.. Building area means the greatest horizontal area of a building above grade within the outside surface of exterior walls or within the outside surface of exterior walls and the centre line of firewalls 3. Define storey. Storey means that portion of a building that is situated between the top of any floor and the top of the floor next above it, and if there is no floor above it, that portion between the top of such floor and the ceiling above it. 4. According to the ABC06, how does the installation of a firewall influence the calculation of building area for a given structure? 4. Unless specifically addressed by the code, when a firewall divides a building, each portion of the building so divided shall be considered as a separate building. (Division A, Article 1.3.3.4.(1)a 5. According to the ABC06, what are the provisions that must be met before a vertical fire separation is considered adequate for separating the portions of that building for the purpose of calculating building height? 1. ___________________________ 2. ___________________________ 3. ___________________________ 4. ___________________________ 5. ___________________________ 1) 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 Appendix A.) 2) 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 a) each separated portion is not more than 4 storeys in building height and is used only for assembly, residential, business and personal services, and mercantile occupancies, and b) 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 Appendix A.) 3) 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. 6. A beauty parlour has a floor area of 250 m2. The building consists of a single storey of floor area, but has a mezzanine of 20 m2. For the purposes of the ABC06, how many storeys is this occupancy? 6. This occupancy is a Group D major occupancy. Sentence 9.10.4.1.(1): a mezzanine with an aggregate area of less than 10% of the floor area (10% of 250 m2 is 25 m2) shall not be considered as a storey for the purpose of determining building height. Therefore, this occupancy would be considered a single-storey occupancy. 7. Define major occupancy. Major occupancy means the principal occupancy for which a building or part thereof is used or intended to be used, and shall be deemed to include the subsidiary occupancies that are an integral part of the principal occupancy. The major occupancy classifications used in this Code are as follows: A1 - Assembly occupancies intended for the production and viewing of the performing arts A2 - Assembly occupancies not elsewhere classified in Group A A3 - Assembly occupancies of the arena type A4 - Assembly occupancies in which the occupants are gathered in the open air B1 - Detention occupancies in which persons are under restraint or are incapable of self-preservation because of security measures not under their control B2 - Treatment occupancies B3 - Care occupancies C - Residential occupancies D - Business and personal services occupancies E - Mercantile occupancies F1 - High-hazard industrial occupancies F2 - Medium-hazard industrial occupancies F3 - Low-hazard industrial occupancies 8. Name and describe the six major occupancy groups and their respective divisions as outlined in the ABC06. Group A Division 1 ____________________________________________ Group A Division 2 ____________________________________________ Group A Division 3 ____________________________________________ Group A Division 4 ____________________________________________ Group B Division 1 ____________________________________________ Group B Division 2 ____________________________________________ Group C ____________________________________________ Group D ____________________________________________ Group E ____________________________________________ Group F Division 1 ____________________________________________ Group F Division 2 ____________________________________________ Group F Division 3 ____________________________________________ 9. According to the ABC06, what is the correct method for classifying a building intended for use by more than one major occupancy? 9. ABC06 3.1.2.1.(2): a building intended for use by more than one major occupancy shall be classified according to all major occupancies for which it is used or intended to be used. 10. An arena-type building used for an occasional trade show can be classified as a Group A Division 3 occupancy. What is the maximum building area permissible for this structure before it has to be sprinklered? 10. ABC06 3.2.2.30(3): if the building area of the arena described exceeds 1 500 m2, the building must be sprinklered throughout. 11. Your records show that a new bowling alley in an open-air shopping mall used to be a dental office. Should you be concerned? Explain. 11. The building size and the major occupancy class combine to determine which provisions of the ABC06 apply. This occupancy has been changed from a Group D occupancy to a Group A Division 2 occupancy. Given this, you should assess the new business for compliance with the provisions for Group A Division 2 occupancies. 1. A family-owned auto repair garage has two residential suites on the second floor above the repair area. Is this combination of occupancies permitted? 1. No. The automotive repair garage is a Group F, Division 2 major occupancy. ABC06 Division B 3.1.3.2.(2): not more than one suite of residential occupancy shall be contained within a building classified as a Group F, Division 2 major occupancy. 2. Is it permissible for a department store and a bowling alley to be next to one another with a 1-hour fire separation between them? 2. No. A bowling alley is a Group A, Division 2 occupancy; a department store is a Group E occupancy. Table 3.1.3.1.: a fire separation of no less than 2 hours is required between these two occupancies. 3. What is the minimum required fire-resistance rating for a fire separation between a motel and a banking facility? 3. The minimum required fire-resistance for a fire separation between a motel (Group C occupancy) and a banking facility (Group D occupancy) is 1 hour. 4. Determine the major occupancy classifications and the minimum fire separation ratings required between the occupancies in the diagram below. Hotel: minor occupancy, main floor - E, D Hotel: major occupancy, remainder - C 3.2.2.42.(2)(d): load-bearing walls, columns and arches shall have a fire-resistance rating not less than that required for the supported assembly. Therefore, the walls between the hotel/dry cleaners and hotel/bank have the same fire-resistance rating as the rest of the hotel (Group C). Consequently, the fire- resistance rating of the separations between the hotel and the two Group D businesses next to it is 1 hour.