[Cob] cob directly on c-slab

[Damon Howell]

Carol,
	I agree with Jill, partially, about stone foundations. They don't  
wick water at all, but then again, I have an urbanite foundation  
which wicks up about an inch from the ground that touches. Not much  
to be worried about, but I have a two foot high foundation with eight  
inches of gravel underneath too. Stone is a bit more in-depth than  
concrete, but no concerns with the wicking issue plus the finished  
product is by far more eye pleasing. If you do stone, dry stack them  
and go back afterwards to fill the cracks and holes in with mortar.  
You shouldn't rely on the strength of mortar because it's not that  
strong, you'll just weaken your wall which isn't a good idea with  
that heavy cob sitting on top of it.

Damon in GA