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Maximum Spans for Built-up Ridge Beams and Lintels Supporting the Roof and Ceiling Only – No. 1 or No. 2 Grade

Table A-12

Forming Part of Sentences 9.23.4.2.(4), 9.23.12.3.(1) and (3), 9.23.13.8.(2) and 9.37.3.1.(1)

Maximum Spans for Built-up Ridge Beams and Lintels Supporting the Roof and Ceiling Only – No. 1 or No. 2 Grade

Notes to Table A-12:

(1) Beam and lintel spans are calculated based on a maximum supported length of 4.9 m.  Spans may be increased by 5% for supported lengths of not more than 4.3 m, by 10% for supported lengths of not more than 3.7 m, and by 25% for supported lengths of not more than 2.4 m.

(2) For ridge beams, supported length means half the sum of the rafter, joist or truss spans on both sides of the beam.  For lintels, supported length means half the sum of truss, roof joist or rafter spans supported by the lintel plus the length of the overhang beyond the lintel.

(3) Provide a minimum bearing length of 76 mm.

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Table A-12. Regulation 332/12 Building Code,   Information published by oncodes.ca for educational purposes only.

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