We are thinking of building an 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 Renolds advocates, as I am 73 yrs old and stacking and filling hundreds of used tires is WAY beyond my capabilities. I guess what I'm asking is, would a raft slab tend to float away from the uphill side?
GEO-Slab insulated Frost Protected Shallow Foundation Forms by LegalettBy Legalett Canada Inc.
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