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// CODE SNIPPET

2308.2.5 Allowable Roof Span

Building Code 2018 of Illinois > 23 Wood > 2308 Conventional Light-Frame Construction > 2308.2 Limitations > 2308.2.5 Allowable Roof Span

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Ceiling joist and rafter framing constructed in accordance with Section 2308.7 and trusses shall not span more than 40 feet (12 192 mm) between points of vertical support. A ridge board in accordance with Section 2308.7 or 2308.7.3.1 shall not be considered a vertical support.

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