Last week we dug out for our shop, and this week I got the footing and wall forms in. Pour is on Tuesday.
Next step is to prep for the slab. We had to dig out quite a bit of topsoil--up to 24" in some places--so quite a bit of fill needs to go back in. The usual fill here is crushed rock. I figure I need approx. 60 yards, and it costs $25 per yard, so I'm looking for ways to save money if possible. Sand is somewhat cheaper, and in places I read that sand is a good slab base and in others I read that it's not. I also have a major pile of fieldstone--our soil is full of it--that I could mix back in, if appropriate. That pile ranges from stones the size of grapefruits up to suitcases and steamer trunks.
I'll bite the bullet and go with all crushed stone if that's the best thing, but I'm looking for options. According to my excavator, and what I see locally, other folks use all sorts of stuff, including old bricks, old cars, etc.