Folks,

I've got a bit of a saggy floor in my 130 year old home, and want to
jack it a bit. I've already had a structural engineer look at it and he
told me what has to be done, but not how to do it.

I've got to put 12 feet of 6" I-beam in, with 3 posts. OK, easy.
I need a good hydralic jack. Ok, easy.

But how to I rig up the jack? Do I have to build up a bunch of
wood (2 pieces this way, 2 pieces at 90 degree, and so on)
until I am high enough where the jack fits in under the ibeam?
Then jack it, adjust the posts?
That seems the obvious way to me.