Building a 24 x 24 cabin (2x6) with a 12/12 roof and wanted to get some input on the foundation. The foundation will be built on sonotubes, 6x10 beams on the piers and 2x8's for the floor joists. Those are what I believe makes sense but... The spacing and size of the tubes is what I am wanting to figure out.
I would like 3 rows but that span between rows seems pretty long. Any suggestions on spacing or a source for calculating spacing?