4.2.7.1.General

(1) A deep foundation shall provide support for a building by transferring loads by end-bearing to a competent stratum
  at considerable depth below the structure, or by mobilizing resistance by adhesion or friction, or both, in the soil or rock
  in which it is placed. (See Note A-4.2.7.1.(1))

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Code text is reproduced for reference from the Ontario Building Code (O. Reg. 163/24, 2024 Building Code Compendium). This page is provided for general information and is not an official copy. Always verify requirements against the official Ontario Building Code and confirm with your local building department.