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Unread 05-10-2019, 07:14 AM   #4
Kman's Avatar
Join Date: Nov 2006
Location: NW Arkansas, Ozark Mountains
Posts: 11,601
Originally Posted by Davy
Are you planning to put a natural stone on this floor?
Sounds like he's planning on parking a truck on it.

Gerald, the Deflecto may actually do those calculations for you, but like the others said, we don't have the size and spacing of the original joists. If they're also 2x10's, the you would just change the joist width to 3", which is what you have with the doubled up joist now.

That's assuming you sistered it properly, i.e. the sister has to be at least 2/3 the span, it should be glued and nailed/screwed to the original joist, and the original joist is in good shape.

The top ten reasons to procrastinate:

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