Could we use a raft slab with ICF walls on a sloped site?
...earth-bermed home cut into a hill (think modified Earthship) in west-central Alberta. Because of the sloping grade, footers below frost would require a number of different depths to stay 4+ feet below grade. I would use ICFs in lieu of the tires that Mike Reynolds advocates, as I am 73 yrs old and stacking and filling ...