Beam Size ?

Feb 19, 2007 10 Replies
R

I am trying to find 4x beam size to get L/480 or less deflection with Structural Select Doug Fir and 10 + 60 PSF loading.



Span 124" supporting 86" of joist --> 5200LB total uniform load Span 56" supporting 89" of joist --> 2500LB Span 108" supporting 42" of joist --> 2250LB



"Sagulator" computations gives me 4x12 for the first and 4x8 for the other two. Anyone with data tables or better software: does this look right to you?



Are there other *free* online tools for this? (I used the AWC calculator for joists)



Cheers, Shawn


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B

The beams look to be about right for the criteria given.

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R

There are free services on the other end of your phone as well. Your friendly local truss/engineered wood fabricator/supplier will be more than happy to take your faxed design criteria and size the required beam for you.

For a background on why I'd recommend using engineered wood:

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DIYer table, pay particular attention to the notes at the bottom for your required deflection conversion.
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R

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R

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Thanks for the info, much appreciated. The last URL does not work for me... perhaps it is accessible only to employees from the inside of the firewall?

Cheers, Shawn

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M

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The first one works, the second is 404.

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