Cacher_Chick
Test, Don't Guess!
In my spare time I am stubbing in a basement bath. I started by digging the hole for a sewage basin and found the soil to be clay. We do have a seasonal high water table so I bought the Zoeller basin with the anti-float flange on the bottom.
I tend to over-think things, but I don't feel that I will be able to adequately compact the native clay around the basin without making the slab cut bigger than I'd prefer to tamp around the basin. Obviously, washing loose clay in with water would be a real mess. I'm thinking about using a mix of sharp sand, clay, and pea gravel, but I'm interested in hearing what the pro's think.
I tend to over-think things, but I don't feel that I will be able to adequately compact the native clay around the basin without making the slab cut bigger than I'd prefer to tamp around the basin. Obviously, washing loose clay in with water would be a real mess. I'm thinking about using a mix of sharp sand, clay, and pea gravel, but I'm interested in hearing what the pro's think.