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Goedjn Goedjn is offline
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Default Basement support beams question

On 3 Aug 2006 09:33:37 -0700, "jonpoi" wrote:
Much editting for volume

part. I didn't measure the sag but it was on the order of
three-fourths of an inch.

In my basement the foundation wall doesn't extend to the back wall of
the house, but ends 4 feet earlier. The basement beams extend past the
wall. If you looked under the old addition you'd see a plywood


The new addition was already done at this point. My contractor said it
was the weight of the house must be pushing the end of the beams down.
He said today they'd either have to be double beams or spaced closer
together. They are spaced 16 or 18" apart believe.

So I was wondering what to do (or if anything should be done). The new
addition was already built by this point. The old kitchen was there
when we bought it 15 years ago. We never saw a problem with the old
countertop (i.e water never ran to the back of it) It seemed to have
stayed level over the years.

So I don't know if I need to reinforce the support beams. But if I
wanted to what would be options? I do have a crawl space under the new
addition. I wouldn't be looking to jack anything up; just support it
from sagging further. thanks.



4' is a really long cantilever.
The simplest thing to do, depending on what's under the
actual edge of the house, would be to dig a trench under
than edge, put in a footing, and 4 posts up to
a crossbeam under the sagging section.

But the thing is, since the area is enclosed, why did
they cantilver it like that in the first place? There
may be something there that makes trying to put in
a footer unwise.