Planning a shop build, any suggestions?

Cuda416 said

Not all pole barns are built that way. Some newer techniques are being used. Pouring concrete pylons and attaching the post to that using brackets designed for it. There is no contact with the ground. So in essence they have a pseudo foundation but nothing like you're talking about.

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I agree. I have built 2 pylon style pole barns. Way better than a standard pole barn. 1 had wood poles and the other red metal.
But if your going to build a pylon style barn, might as well just purchase red steel/Isteel/structural steel. Build the main frame out of metal and connect wood to that or continue with metal purlins/girts/bracing etc. A full metal building that is pre ordered to be set on concrete pylon's can actually be a very reasonable price.
When comparing price to price, the taller you build the more efficient metal becomes. Metal allows taller spans.