4.1.7.1.Specified Wind Load

(1) The specified wind loads for a building and its components shall be determined using the Static, Dynamic or Wind
     Tunnel Procedure as stated in Sentences (2) to (5).

     (2) For the design of buildings that are not dynamically sensitive, a as defined in Sentence 4.1.7.2.(1), one of the
     following procedures shall be used to determine the specified wind loads:
     (a) the Static Procedure described in Article 4.1.7.3.,
     (b) the Dynamic Procedure described in Article 4.1.7.8., or
     (c) the Wind Tunnel Procedure described in Article 4.1.7.14.

     (3) For the design of buildings that are dynamically sensitive, as defined in Sentence 4.1.7.2.(2), one of the following
     procedures shall be used to determine the specified wind loads:
     (a) the Dynamic Procedure described in Article 4.1.7.8., or
     (b) the Wind Tunnel Procedure described in Article 4.1.7.14.

  (4) For the design of buildings that may be subject to wake buffeting or channelling effects from nearby buildings, or
  that are very dynamically sensitive, as defined in Sentence 4.1.7.2.(3), the Wind Tunnel Procedure described in Article
  4.1.7.14., shall be used to determine the specified wind loads.

  (5) For the design of cladding and secondary structural members, one of the following procedures shall be used to
  determine the specified wind loads:
  (a) the Static Procedure described in Article 4.1.7.3., or
  (b) the Wind Tunnel Procedure described in Article 4.1.7.14.

  (6) Computational fluid dynamics shall not be used to determine the specified wind loads for a building and its
  components. (See Note A-4.1.7.1.(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.