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Old 06-04-2009, 12:57 PM  
SMURAN
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Default Structral Question

I am looking for the formula for the different sized boards for the joist (ex. 2 X 6, 2X 10)

The formula that I am looking for is how to calculate the maximum span I can run my floor joist using a deflection of L/360. and I am also looking for the spacing between joist. I am not sure what a good pounds per square foot would be, I am not putting a hot tub or anything on the deck.

I know there are places on line that I can enter the type of wood I am using but in the size of board I want to use and specify the spacing that I would like to use and it will calculate the span that I should not exceed. But I am looking for the formula that is used to arrive at that answer if anyone can help me out.



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Old 01-09-2010, 07:07 PM  
thedeckbarn
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you will need or should probably go to an engineering site to see if that is available. Might try a university also
steve scholl
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www.killerdecks.com



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Old 07-15-2010, 07:41 AM  
lnkddbz
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I think for this you have to look for a engineering website..

recovery data

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Old 12-31-2010, 05:52 PM  
thedeckbarn
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http://www.thedeckbarn.com/howto-buildadeck.aspx Here is a how to that will give you the formulas you are looking for. There were made by The American Wood Coulnci.
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