The Ontario Building Code | Hip and Valley Rafters
9.23.13.6. Hip and Valley Rafters
(1) Hip and valley rafters shall be not less than 50 mm greater in depth than the common rafters and not less than 38 mm thick, actual dimension.
In Plain Language
Hip and valley rafters, which form the diagonal lines where sloped roof surfaces meet, must meet the specific requirements set out in this article.
This is a plain-language summary of the 2012/2017 Ontario Building Code text above, for general understanding only and not a substitute for the Code. Always confirm current requirements against the 2024 edition (O.Reg. 163/24) or a qualified professional before construction.