Support of Footings

(1)  Footings shall rest on undisturbed soil, rock or compacted granular fill.

    (2)  Granular fill shall not contain pyritic material in a concentration that would adversely affect its stability or the performance of assemblies separating dissimilar environments.

Article 9.15.3.2 Ontario Regulation 332/12 Building Code,   Information published by oncodes.ca for educational purposes only.