Poured or block is best if only obviously smile Not knowing the remoteness of the location, it could get pricy.

Barring that, I'd go with sono-tubes with wheel barrow concrete and girders on which to place floor joists.

458 Lott is an engineer and will have good advice as well as others. I'm just a redneck. smile

If you take the time it takes, it takes less time.
--Pat Parelli

American by birth; Alaskan by choice.
--ironbender