The Ontario Building Code | Piping Materials and Installation
6.2.9.1. Piping Materials and installation
(1) Piping shall be made from materials designed to withstand the effects of temperatures and pressures that may occur in the system.
(2) Every pipe used in a heating or air-conditioning system shall be installed to allow for expansion and contraction due to temperature changes.
(3) supports and anchors for piping in a heating or air-conditioning system shall be designed and installed to ensure that undue stress is not placed on the supporting structure.
In Plain Language
This clause sets baseline expectations for piping in heating or air-conditioning systems: it must handle expected temperatures and pressures, must be installed allowing for thermal expansion and contraction, and its supports/anchors must be designed so the piping doesn't place undue stress on the building structure.
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.