The Ontario Building Code | Structural Movement
9.33.1.3. Structural Movement
(1) Where the building is in a location where the spectral response acceleration, Sa(0.2), is greater than 0.55, heating and air-conditioning equipment with fuel or power connections shall be secured to the structure to resist overturning and displacement.
9.33.2. Required Heating Systems
In Plain Language
Heating system components must accommodate structural movement, as set out in this article, since a rigid connection across a settling or shifting structure could fail over time.
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.