wrote in message
ups.com...
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?


Dude, seriously not enough information to help you.

My answers would only be dripping in sarcasm

Engineers get paid for this kind of inspection and solution. DIY, no
because of the way you state the problem and your solution.