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Iowa | It's basically 2/3 of the bushels you would have if the bin was level full at the grain height on the sidewalls.
Edit to add: A bushel is 1.245 cubic feet. That is a bushel by volume. If you have 60 pound test weight corn, that 1.245 cubic feet of corm will weigh 60 pounds, so it will be a little more than a bushel by weight. You get paid by weight. If the test weight is 56 pounds (standard corn test weight), the 1.245 cubic foot bushel by volume is also equal to one bushel by weight.
If you have a 24' (12' radius) bin that stopped feeding at the center sump (assuming the grain was flowing evenly to the center) and assuming it has a 56 pound test weight (to appease the crowd that likes to argue about test weight), and assuming the grain hieght at the side walls is 6' (you'll have to count the rings and estimate the side wall grain height and don't forget to subtract adjust for the drying floor if you have one) the bushels left in the bin would be as follows:
(3.1416 X 12 X 12 X 6 X 2/3) / 1.245
That should get you reasonably close.
Edited by tigger 3/16/2020 05:35
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