PART 4 — STRUCTURAL DESIGNUpdated for the 2024 Ontario Building Code
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4.1.4.1.Dead Loads
(1) The specified dead load for a structural member consists of,
(a) the weight of the member itself,
(b) the weight of all materials of construction incorporated into the building to be supported permanently by the
member,
(c) the weight of partitions,
(d) the weight of permanent equipment, and
(e) the vertical load due to soil, superimposed earth, plants and trees
.
(2) In areas of a building for which partitions are shown on the drawings, the weight of partitions referred to in
Clause (1)(c) shall be taken as the actual weight of such partitions. (See Note A-4.1.4.1.(2))
(3) In areas of a building for which partitions are not shown on the drawings, the weight of partitions referred to in
Clause (1)(c) shall be a partition weight allowance determined from the anticipated weight and position of the partitions,
but shall not be less than 1 kPa over the area of floor being considered. (See Note A-4.1.4.1.(3))
(4) Partition loads used in design shall be shown on the drawings.
(5) Where the partition weight allowance referred to in Sentence (3) is counteractive to other loads, it shall not be
included in the design calculations.
(6) Except for structures where the dead load of soil is part of the load-resisting system, where the dead load due to soil,
superimposed earth, plants and trees is counteractive to other loads, it shall not be included in the design calculations.
(See Note A-4.1.4.1.(6))
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Code text is reproduced for reference from the Ontario Building Code (O. Reg. 163/24, 2024 Building Code Compendium). This page is provided for general information and is not an official copy. Always verify requirements against the official Ontario Building Code and confirm with your local building department.