4.1.3.3.Fatigue

(1) A building and its structural components, including connections, shall be checked for fatigue failure under the effect
   of cyclical loads, as required in the standards listed in Section 4.3. (See Note A-4.1.3.3.(1))

   (2) Where vibration effects, such as resonance and fatigue resulting from machinery and equipment, are likely to be
   significant, a dynamic analysis shall be carried out. (See Note A-4.1.3.3.(2))

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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.