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dsgg 12-24-2012 12:38 PM

We have an old Key West home (pier construction) with joists that are 2"X 5 1/4"(real size Dade pine)spaced about 24" apart.They are notched to fit the sills about 4 1/2 inches. I would like to add joists between them - they would be 1/2 the width of the house and rest on the center beam. However fitting anything with a 18 inch craw space is a problem without major surgery. I am wondering if I could use a kind of sandwich consisting of a 2x4 at the center and 1x6's on each side.

Any help would be appreciated

AndyGump 12-24-2012 05:00 PM

It sounds like you are not replacing what is there which is a good start.
What ever you do to stiffen up the floor (which is what I assume you are trying to do) will probably not hurt but it may not be all that much help either.
You may want to think about adding some footing pads down the center of each side between the center cripple wall of yourt foundation and the perimeter walls. Then add posts and piers and some pressure treated 4x6 to act as intermediary beams...which they will be. Hmmm...could have said that better.


joecaption 12-24-2012 05:57 PM

I agree with Andy but would use ganged up 2 X 6's instead. less likly to sag, curl or twist.

dsgg 12-24-2012 08:24 PM

Thanks, center beam(not sure of exact terminology) is about 10' from each side.I couldn't get anything as long as the house in there but I guess shorter ones could meet over a pier.

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