Building structural load-bearing walls on high-density rigid foam
Building structural load-bearing walls on high-density rigid foam. Besides making sure that the psi is strong enough, is there any reason not to?
Looking for examples this approach: Trench footer, CMU block (solid), infilled with compacted gravel making inside foundation flush with top of 8″ block wall, then 4″ of rigid foam over the entire surface, with perimeter bolted down by way of the sill plate, then 3″ concrete slab poured inside as finished floor (prior to outside walls). Below slab foam would then be neatly connected to outside wall foam, providing a seemingly simple insulated slab. I would share a sketch if I could.
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