With it being Montana , we have more then a freeze thaw climate, Not sure just where the op is in the state, but where I am at it can go from -20/30 to + 40/50 over night. :thumbup:How much of what kind of stuff you planning putting in there?
You in a freeze thaw climate?
I wonder who the commercial guy is :laughing:I would get some 20" sonotube. Excavate to 8" below frost line or competent bearing,(something that you can't easily push a #4 rebar into.) whichever is deeper. Then take that #4 that you just probed the bottom of the footing with along with some #3 x16" daimeter rings and make a rebar cage for each footing.
Or you could just scrape off the sod and throw down some 4" solids. :laughing:
Why so concerned about a 20" conex? Is this a permanent installation?
Good for them. I get tired of looking at those things on the job, don't want to see 'em around the house when I get home. :no: