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Unread 05-09-2019, 08:15 PM   #1
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Join Date: May 2019
Location: Juliette GA
Posts: 4
Deflection Calculations

I have a floor that spans 11'2" from an exterior block wall to a double 2x12 beam on cinderblock piers spanning 6' apart. I added a 2x10 syp joist to the side of every joist that is beneath the bathroom floor and replaced most of the 3/4" plywood subflooring with advantec and added 1/2" BC spaced 1/8 at all edges and screws 4" at edges and every 6" in the field. My question is what is the deflection of this floor? Deflecto doesn't consider double joist and adding the width to give a single joist width would not be correct I'm sure.
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