Construction codes of Ontario

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Flashing Materials

Flashing Materials Table 9.20.13.1. Forming Part of Sentence 9.20.13.1.(1) Table 9.20.13.1 Ontario Regulation 332/12 Building Code, Information published by oncodes.ca for educational purposes only.

Floor Concrete Topping – Joist spans

Floor Concrete Topping – Joist spans (1) Except as permitted in Sentence (2), where a floor is required to support a concrete topping, the joist spans shown in Table A-1 or the spacing of the members shall be reduced to allow for the loads due to the topping. (2) Where a floor is required to support […]

Floor Framing

Floor Framing Use span tables to select the joist size for the lumber species and grade, joist spacing, span and loads. Where in-floor heating requires concrete topping, floor joists should be deeper or more closely spaced.Consider how plumbing and ductwork will be installed without disrupting the floor system.Use floor sheathing and sub-flooring appropriate for the […]

Floor Framing

Floor Framing A rim joist is end-nailed or toe-nailed to each joist. The joists, including the end joist parallel to the exterior walls, are toe-nailed to the sill plate (Figure 63). The inner portions of the joists are supported on top of load-bearing walls or intermediate beams (Figure 53), or framed into the side of […]

Floor Framing at Projections

Floor Framing at Projections Floor joists sometimes project beyond the foundation or framed wall to provide support for a bay window or additional floor space in the upper rooms. The cantilevered portion of the floor framing should not exceed 400 mm (16 in.) for 38 × 184 mm (2 × 8 in.) joists and 600 […]

Floor Joists

Floor Joists Joists are selected to meet strength, deflection and vibration requirements on which the joist selection tables are based. The spans in the tables are measured between the inside edges of the joist supports and have been calculated for standard Canadian lumber sizes. Strength requirements ensure the floor joist system is strong enough to […]

Floor Performance

Floor Performance The floor joist span tables incorporate vibration criteria. The tables recognize that some floor constructions are more “bouncy” or “springy” than others. Therefore, by adding blocking or increasing subfloor thickness, floors will be less springy or bouncy and floor joist spans may be increased. Alternatively, engineered wood products such as laminated veneer lumber […]