June 19, 20197 yr I considered ICF for my basement, then thought about ICF for the rest of the house with a SIPs roof on top - however that was coming out quite expensive. Also looked at an all ICF system, including roof & floors (Thermohouse) but still too much. Settled on a cast in situ 'open' basement that mimicked the perimeter of the MBC passive slab design with a suspended steel / timber floor and MBC passive house on top. Had I gone for a capped basement then it would have been just like one of their raft foundations to build off. I got MBC to design their part first and handed it over to a SE to design the basement underneath, taking all of the point loads into consideration. When the basement was built, I had MBC take final site measurements before putting the frame into production - meant a few weeks of delay but peace of mind. All worked fine. Edited June 19, 20197 yr by Bitpipe
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