4.1.6.6.Horizontal Gap Between a Roof and a Higher Roof

(1) Where the roof of one building is separated by a distance, a, from an adjacent building with a higher roof as shown
  in Figure 4.1.6.5.-A, the influence of the adjacent building on the value of the accumulation factor, Ca, for the lower roof
  shall be determined as follows:
  (a) if a > 5 m, the influence of the adjacent building on Ca for the lower roof can be ignored, and
  (b) if a ≤ 5 m, Ca for the lower roof shall be calculated in accordance with Article 4.1.6.5. for values of x ≥ a.

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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.