The Ontario Building Code | Environmental Load and Transfer Calculations
5.2.1.3. Environmental Load and Transfer Calculations
(1) Calculations related to the transfer of heat, air and moisture and the transmission of sound shall conform to good engineering practice such as that described in the ASHRAE Fundamentals Handbook.
(2) For the purposes of any analysis conducted to indicate conformance to the thermal resistance levels required in Article 5.3.1.2., soiltemperatures shall be determined based on annual average soiltemperature, seasonal amplitude of variation and attenuation of variation with depth.
(3) Wind load calculations shall conform to Subsection 4.1.7.
5.2.2. Structural Loads and design Procedures
In Plain Language
Calculations related to the transfer of heat, air, and moisture through building assemblies must follow recognized engineering methods, forming the analytical basis for the building envelope design requirements that follow.
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.