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US Span Book for Major Lumber Species


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If you guys don't have this reference book already, I'd highly suggest picking one up. It's very helpfull determining if construction lumber is over-spanned. It's charts span lengths fro rafters, ceiling joists, and 2x floors and balconies for US and Canadian species for different loading.

You can pick one up here


or probably at any major construction trade show. Very handy little book.There is also a canadian Span Book for our northern friends.

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