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Posted by tbasc@bellsouth.net on June 14, 2006, 4:58 pm
span...@gmail.com wrote:
> The floor joists in our 1992 house (new to us) was notched more than
> 50% in 2 places (to install the A/C ducts) & drilled in another area to
> install several small copper pipes. I had 2 contractors come out &
> look at the notched floor joists & give an estimate for repairs. One
> said it was no problem because: (1) the house is 15+ years old & there
> was no evidence of buckling in the floor; (2) the notches are close to
> perpendicular support beams in the crawl space and near the concrete
> block framework for the crawlspace. A second contractor said it needs
> to be repaired & the house may not be up to code because of the
> notching (although it is commonly done by contrators when installing
> ductwork.
>
> 2 questions:
>
> 1. Is this a problem that needs to be repaired? (Even though there is
> no evidence in the home that it is causing a problem & the places where
> the joists were notched are not supporting any heavy pieces of
> furniture.)
>
> 2. Can I do this repair myself?
>
> - I have an idea of what needs to be done (i.e., scrape out a flat
> spot, pour concrete foundation, get 2 concrete cinderblocks [or
> concrete blocks designed specifically for this job], then install 2
> jacks for each cut out. But what type of jacks? and how tight should
> the jacks be against the floor joists to give it enough support?
Functionally, the house seems to be o.k.
It may not meet code.
If you want to "fix" the condition, I wouldn't use jacks as permanent
support.
Lay down some temporary supports to spread the weight and use jacks to
lift the joist slightly above level.
Install concrete footings and masonry piers to support joists at level.
remove jacks.
TB
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