7.4.9.5.Offset in Leaders

(1)   No change in the nominal pipe size of a leader with a nominally horizontal offset is required if the offset
     (a)   is located immediately under the roof,
     (b)   is not more than 6 m long, and
     (c)   has a slope of not less than 1 in 50.

     (2) If the horizontal offset is more than 6 m long, the leader shall conform to Table 7.4.10.9.

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.