A couple years ago I had to dig up my foundation, and despite our best efforts at machine tamping to 'refusal'- it apparently wasn't enough.
So now the slab for my oil barrel is pitched 1/2 inch towards the house. If it went the other way, I'd just watch it-- but I'd like to correct it as it is bound to get worse. The slab is 3-4"thick and
3'x6'.I can lift the slab at the two low corners and get it back to level- and will pitch it away from the house. But what is the best way to try to get a slurry under as much of the slab as possible.
My first thoughts are to;
- make roughly 8" square access holes a foot deep on the 2 low corners -
- jack to level-
- enclose the 'piers' and most of the back side - leaving a space in the center.
- fill with a loose slurry until it begins to ooze from the center.
I have access to a concrete vibrator- but I have only seen one in use once and I'm not sure if it will work here.
What are my chances that this will keep this slab more-or-less in place for a few more years? [I'm in NY- btw- so frost will guarantee that it will never stay exactly where I put it- I'm just trying to get it to be 'off' in the right direction.]
Thanks, Jim