Roof Joists Span Calculator
Calculate maximum spans for roof joists supporting roof loads only.
⚠️ Important Disclaimer:
This calculator is for reference only and provides preliminary estimates based on BC Building Code 2018 Tables 9.23.4.2.-D, E.
Always consult with a qualified structural engineer or building professional for structural design and code compliance verification.
This calculator does not account for special loading conditions, concentrated loads, or other factors that may affect structural requirements.
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