Div. B › Part 10 › 10.2 › 10.2.1 — Classification

10.2.1.1 — Classification of Major Occupancy

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(1) Every existing building or part of it shall be classified according to its major occupancy in accordance with the requirements of Subsection 3.1.2.

OBC Definitions

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major occupancy

means the principal occupancy for which a building or part of a building is used or intended to be used, and is 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: (a)Group A, Division 1 - Assembly occupancies intended for the production and viewing of the performing arts, (b)Group A, Division 2 - Assembly occupancies not elsewhere classified in Group A, (c)Group A, Division 3 - Assembly occupancies of the arena type, (d)Group A, Division 4 - Assembly occupancies in which occupants are gathered in the open air, (e)Group B, Division 1 - Detention occupancies, (f)Group B, Division 2 - Care and treatment occupancies, (g)Group B, Division 3 - Care occupancies, (h)Group C - Residential occupancies, (i)Group D - Business and personal services occupancies, (j)Group E - Mercantile occupancies, (k)Group F, Division 1 - High hazard industrial occupancies, (l)Group F, Division 2 - Medium hazard industrial occupancies, and (m)Group F, Division 3 - Low hazard industrial occupancies.

occupancy

means the use or intended use of a building or part of a building for the shelter or support of persons, animals or property.

building

(a) a structure occupying an area greater than ten square metres consisting of a wall, roof and floor or any of them or a structural system serving the function thereof including all plumbing, works, fixtures and service systems appurtenant thereto,
(b) a structure occupying an area of ten square metres or less that contains plumbing, including the plumbing appurtenant thereto,
(c) plumbing not located in a structure,
(c.1) a sewage system, or
(d) structures designated in the building code; Act

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