In Plain Language

This clause defines what 'horizontal service spaces and service facilities' means for the rules that follow: ceiling spaces, duct spaces, crawl spaces, and attic or roof spaces are all included under this scope.

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.