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Western Iowa | I have done several pads that size over the years. Just rip some 3/8 plywood down to the width you want (18"). Pound in a 2x4 about 12" into the ground at each 8ft seam and screw the plywood to it. Pound some chunks of rod or old steel posts in between the 2x4. Then take a log chain and wrap around the whole darn thing with a few load binders. Will need to spike in a few 16 penny nails to help hold the chain up until its tight.
It works, it holds fine, pretty fast, and its cheap.
I would recommend just going with 24" though. Never regret a little more clearance on auger and keeping the bin up out of dirt and grass. A few yards of sand is cheap in the scheme of things to add the 6". | |
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Grain bin forms idea.
