The Ontario Building Code | Field Review
4.2.2.2. Field Review
(1) A field review shall be carried out by the designer or by another suitably qualified person to ascertain that the subsurface conditions are consistent with the design and that construction is carried out in accordance with the design and good engineering practice.
(2) The review required in Sentence (1) shall be carried out,
(a) on a continuous basis,
(i) during the construction of all deep foundation units with all pertinent information recorded for each foundation unit,
(ii) during the installation and removal of retaining structures and related backfilling operations, and
(iii) during the placement of engineered fills that are to be used to support the foundation units, and
(b) as required, unless otherwise directed by the chief building official,
(i) in the construction of all shallow foundation units, and
(ii) in excavating, dewatering and other related works.
In Plain Language
A field review must be carried out by the designer or another qualified person to confirm that actual subsurface conditions match what the design assumed, and that construction proceeds consistent with that design.
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.