The Ontario Building Code | Scope
5.1.1.1. Scope
(1) The scope of this Part shall be as described in Subsection 1.1.2. of Division A.
5.1.2. application
In Plain Language
This is a scoping clause: it simply confirms Part 5 (Environmental Separation) applies to the same buildings described back in Division A, Subsection 1.1.2. There's no technical requirement here, just a pointer.
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.