4.3.6.1.Design Basis for Glass

(1) Glass used in buildings shall be designed in conformance with
     (a) CAN/CGSB-12.20-M, “Structural Design of Glass for Buildings,” using an adjustment factor on the wind load, W,
          of not less than 0.75, or
     (b) ASTM E1300, “Standard Practice for Determining Load Resistance of Glass in Buildings,” using an adjustment factor
          on the wind load, W, of not less than 1.0.
     (See Note A-4.3.6.1.(1))

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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.