Div. B › Part 4 › 4.1 › 4.1.5 — Live Loads Due to Use and Occupancy

4.1.5.5 — Loads on Exterior Areas

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(1) Exterior areas accessible to vehicular traffic shall be designed for their intended use, including the weight of firefighting equipment, but not for less than the snow and rain loads prescribed in Subsection 4.1.6.

(2) Except as provided in Sentences (3) and (4), roofs shall be designed for the uniform live loads specified in Table 4.1.5.3., the concentrated live loads listed in Table 4.1.5.9., or the snow and rain loads prescribed in Subsection 4.1.6., whichever produces the most critical effects in the members concerned.

(3) Exterior areas accessible to pedestrian traffic, but not vehicular traffic, shall be designed for their intended use, but not for less than the greater of,

(a) the live load prescribed for assembly areas in Table 4.1.5.3., or

(b) the snow and rain loads prescribed in Subsection 4.1.6.

(4) Roof parking decks shall be designed for the uniformly distributed live loads specified in Table 4.1.5.3., the concentrated live loads listed in Table 4.1.5.9., or the roof snow load, whichever produces the most critical effect in the members concerned.

Tables & Figures referenced

Table 4.1.5.3 : Specified Uniformly Distributed Live Loads on an Area of Floor or Roof : Forming Part of Sentence 4.1.5.3.(1)

Loading Table 4.1.5.3…

Table 4.1.5.9 : Specified Concentrated Live Loads on an Area of Floor or Roof : Forming Part of Sentence 4.1.5.9.(1)

Loading Table 4.1.5.9…

OBC Definitions

Defined terms on this page

accessible

means , when applied to a fixture, connection, plumbing appliance, valve, cleanout or equipment, to be accessible with or without having to first remove an access panel, door or similar obstruction, but a fixture, connection, plumbing appliance, valve, cleanout or equipment is not accessible if access can be gained only by cutting or breaking materials.

basement

means one or more storeys of a building located below the first storey.

computer room

means a room, (a)that contains electronic computer or data processing equipment such as main frame type, (b)that is separated from the remainder of the building for the purpose of controlling the air quality in the room by a self-contained climate control system, and (c)that has an occupant load of not more than one person for each 40 m² of the room.

exit

means that part of a means of egress, including doorways, that leads from the floor area it serves to a separate building, an open public thoroughfare or an exterior open space protected from fire exposure from the building and having access to an open public thoroughfare.

hotel

means floor areas, a floor area or part of a floor area that contains four or more suites and that provides sleeping accommodation for the travelling public or for recreational purposes.

listed

means equipment or materials included in a list published by a certification organization accredited by the Standards Council of Canada.

live load

means a variable load due to the intended use and occupancy that is to be assumed in the design of the structural members of a building and includes loads due to cranes and the pressure of liquids in containers.

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.

service room

means a room provided in a building to contain equipment associated with building services.

stage

means a space that is designed primarily for theatrical performances with provision for quick change scenery and overhead lighting, including environmental control for a wide range of lighting and sound effects, and that is traditionally, but not necessarily, separated from the audience by a proscenium wall and curtain opening.

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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