Construction codes of Ontario

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Attics and Roof Spaces

Attics and Roof Spaces (1) Ceiling joists or truss bottom chords in residential attic or roof spaces having limited accessibility that precludes the storage of equipment or material shall be designed for a total specified load of not less than 0.35 kPa, where the total specified load is the sum of the specified dead load plus […]

Attics, Roof Spaces and Roofing

Attics, Roof Spaces and Roofing Unconditioned attics must be separated from the conditioned environment by insulation, an air barrier system and a vapour barrier. They should be vented to remove any moisture that has entered from the conditioned interior environment or the exterior environment. The roof shape must effectively shed water and be covered with […]

Basement Floors

Basement Floors A concrete floor or polyethylene sheet can serve an air barrier. The floor air barrier must be sealed to the air barrier in the below-grade walls. This can be done by caulking the joint between the floor and basement walls. Dampproofing and air barrier protection against radon leakage into conditioned spaces is usually […]

Basic 3 Way Switch Wiring

Basic 3 Way Switch Wiring Oncodes.ca publishes this information for educational purposes only. Please consult your electrician prior to any work and/or have an inspection performed. buildmyowncabin.com Note: A multi-way switch is a device that allows you to control the power supply to more than one electrical load. It works by supplying power from a single […]

Bonding of receptacles (see Appendix B)

Bonding of receptacles (see Appendix B) 1) Where grounding-type receptacles are used in existing installations to replace the ungrounded type, the grounding terminal shall be effectively bonded to ground and one of the following methods shall be permitted to be used: a) connection to a metal raceway or cable sheath that is bonded to ground;b) […]

Built-up Wood Beams

Built-up Wood Beams (1) Where a beam is made up of individual pieces of lumber that are nailed together, the individual members shall be 38 mm or greater in thickness and installed on edge. (2) Except as permitted in Sentence (3), where individual members of a built-up beam are butted together to form a joint, the […]

Columns in Contact with Concrete

Columns in Contact with Concrete (1) Wood columns shall be separated from concrete in contact with the ground by 0.05 mm polyethylene film or Type S roll roofing. Article 9.17.4.3 Ontario Regulation 332/12 Building Code, Information published by oncodes.ca for educational purposes only.