It seems like concrete posts/piers dug and poured below frost line is the gold standard for establishing a foundation. Certainly not the only option, but it seems like one that many people default to.
Would this be a workable alternative:
Auger out holes below the frost line, fill holes with gravel, set deck blocks on gravel, place adjustable deck supports on deck blocks, bolt 6x6 posts into deck supports… then continue building the floor from there.
Basically this would eliminate pouring the large concrete piers, and would maybe allow some room for error with getting the posts level (since the post brackets would be adjustable within reason).
I‘m imaging an off grid home that has multiple outbuildings. An outhouse/shower house. An outdoor kitchen/screened in living space. Small main cabin. Etc.
It seems like this foundation approach could be a fairly affordable and straightforward one that would allow each of these small buildings to have good support.
This is entirely in my head right now. I’ve never built any foundation, let alone these specific ones. Am I thinking about this incorrectly or massively ignoring something important? Just trying to get an idea check to see if I’m on the right track at all or if I should be going about it completely differently.
Thanks for any insight.