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Deflection Factors

Posted by Dodgeman on February 15th, 2002 12:38 PM
In reply to Adding bathroom to second story? by Lana on February 15th, 2002 08:03 AM [Go to top of thread]

If you have actual 4x6's that are 16 inches on center, they will deflect less than 2x8's and more than 2x10's.
To be specific, if you put a load on the center of your floor that would deflect it 1 inch, the same floor made out of 2x8's would deflect 1.5 inches. The same floor made out of 2x10's would deflect 0.73 inches.
I'm using the 1 inch deflection only as an example.
Unless there are other defects in your 4x6 joists, I would think the added load for a bathtub would be acceptable.
Good Luck!

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