Construction codes of Ontario

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Removal of Topsoil and Organic Matter

Removal of Topsoil and Organic Matter (1) The topsoil and vegetable matter in all unexcavated areas under a building shall be removed. (2) In localities where termite infestation is known to be a problem, all stumps, roots and other wood debris shall be removed from the soil to a depth of not less than 300 mm […]

Required Installation of Granular Fill

Required Installation of Granular Fill (1) Except as provided in Sentence (2), not less than 100 mm of coarse clean granular material containing not more than 10% of material that will pass a 4 mm sieve shall be placed beneath floors-on-ground. (2) Granular material need not be installed under, (a) slabs in garages, carports or […]

Required Soil Gas Control

Required Soil Gas Control (1) Except as provided in Sentence (2), all wall, roof and floor assemblies in contact with the ground shall be constructed to resist the leakage of soil gas from the ground into the building. (2) Construction to resist leakage of soil gas into the building is not required for, (a) garages […]

Required Waterproofing

Required Waterproofing (1) Where hydrostatic pressure occurs, waterproofing is required for assemblies separating interior space from the ground to prevent the ingress of water into building assemblies and interior spaces. (2) Waterproofing is required for roofs of underground structures to prevent the ingress of water into building assemblies and interior spaces. Article 9.13.3.1. Ontario Regulation […]

Sill Plates and Anchors

Sill Plates and Anchors The sill plate should be levelled carefully. If the top of the foundation is level, the sill plate may be laid directly on caulking placed on the top of the concrete or over a closed-cell foam gasket or other air-impermeable material of the same width as the sill plate. If the […]

Sill-Plate Method

Sill-Plate Method The sill-plate method is the most common form of connection and can be used with either concrete or concrete block foundation walls. It consists of a wood sill plate anchored to the foundation wall (Figure 56) for the support and fastening of the joists and a rim joist attached to the ends of […]

Size of Sill Plates

Size of Sill Plates (1) Where sill plates provide bearing for the floor system they shall be not less than 38 mm by 89 mm material. Article 9.23.7.1. Ontario Regulation 332/12 Building Code, Information published by oncodes.ca for educational purposes only.