4.1.5.1.Loads Due to Use of Floors and Roofs

(1) Except as provided in Sentence (2), the specified live load on an area of floor or roof depends on the intended use
     and occupancy, and shall not be less than either the uniformly distributed load patterns listed in Article 4.1.5.3., the loads
     due to the intended use and occupancy, or the concentrated loads listed in Article 4.1.5.9., whichever produces the most
     critical effect. (See Note A-4.1.5.1.(1))

     (2) For buildings in the Low Importance Category as described in Table 4.1.2.1., a factor of 0.8 may be applied to the
     live load.

This provision includes a table — formatting is preserved from the source; refer to the official code for the authoritative layout.

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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.