The Ontario Building Code | Identification
4.2.4.3. Identification
(1) The identification and classification of soil, rock and groundwater and descriptions of their engineering and physical properties shall be in accordance with a widely accepted system.
In Plain Language
Soil, rock, and groundwater must be identified and classified, with their engineering and physical properties described, using a widely accepted geotechnical classification system rather than an ad hoc approach.
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.