Dirt Basement Stabilization
OK, here's the deal. We're rehabbing an 1860's brick victorian. We've got a 2/3 basement and a 1/3 dug out dirt crawlspace. By dug out, I mean that they literally dug a large space out of the dirt of the crawl space as though they were going to extend the basement. But they didn't.
So, it's dirt and I'm certain that the foundation back there goes all the way down. In fact, I'm pretty sure it doesn't.
I'd like to stabilize the dirt that's there (in most places it's 2'-3' out from the foundation, but not everywhere). The house took on a lot of water due to roof leakage and some bad drainage, so that the dirt back there has eroded in some spots too. Basically it's a mess.
Now, no one has told me that I HAVE to do anything, and I have been told to cover it in plastic and then foam the walls above grade. Fine.
But I've got the floor up already and I can get a truck right up to the window above. The entire space is maybe 15x15, with only part of it dug out and maybe 3' up the wall of dirt that needs to be supported and another 3' or so that I'd like covered with something.
So, I'm thinking, preliminarily, that I could build a form leaning toward the foundation, pour that with a few inches of concrete, leave the form in place and pour a "floor" while I'm at it. I don't need to use the space for anything other than access to pipes and maybe electrical and I don't see anything structural that the concrete would do save keep the dirt from being disturbed and then undermining the foundation. So, I'm thinking that I could stabilize the dirt and also get a vapor barrier at the same time that could be safely walked upon.
I'm guessing this is about 3.5 yards of concrete to complete. Anyone have any thoughts or experience with this?