The Ontario Building Code | Altered Subsurface Condition

4.2.2.3. Altered Subsurface Condition

(1) If during construction, the soil, rock or groundwater is found not to be of the type or in the condition used in design, and as indicated on the drawings, the design shall be reassessed by the designer.

(2) If during construction, climatic or any other conditions have changed the properties of the soil, rock or groundwater, the design shall be reassessed by the designer.

4.2.3. Materials Used in foundations