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1967806

Handy online grain bin calculator

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Did some playing around with this and it sure is amazine how much 5 LBS difference in test weight makes in the amount of bushels in a 36' bin. Most of the corn I had tested at the elevator for moisture this fall was in the 57 to 58 LB range. I have had some over 60 before. That may be why the bushels that my local FSA office figured for me the last 2 years was off some. I always actually had more in the bin then they calculated. Last year I almost had another semiload more.

Just thought you might be intersted in this.

http://www.farmnetservices.com/calc/

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Did some playing around with this and it sure is amazine how much 5 LBS difference in test weight makes in the amount of bushels in a 36' bin. Most of the corn I had tested at the elevator for moisture this fall was in the 57 to 58 LB range. I have had some over 60 before. That may be why the bushels that my local FSA office figured for me the last 2 years was off some. I always actually had more in the bin then they calculated. Last year I almost had another semiload more.

Just thought you might be intersted in this.

http://www.farmnetservices.com/calc/

FSA will only use a max of 58# TW or actual TW, whichever is less.

Here's a couple formulas I use

Bin Capacity Formula

used by F.S.A.

Dia. x Dia. x .7854 x Height x .8 x pack factor = Bushells

pack factor for corn

56# TW = 1.018 61# TW = 1.093

57# TW = 1.033 62# TW = 1.108

58# TW = 1.048 63# TW = 1.123

59# TW = 1.063 64# TW = 1.138

60# TW = 1.078 65# TW = 1.153

cone = Dia. x Dia. x .2618 x Height / 1.25

determining peak height corn peak height = .42 x (0.5xdia)

beans peak height = .47 x (0.5xdia)

used by Rain & Hail Ins. Co.

Dia. x Dia. x .7854 x Hieght x .8 = Bushells

for T.W. divide bushells by 56 then x TW

Beans = Dia. x Dia. x.7854 x Height x .8

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Ya Im one of them dummies that measure the bins for FSA. The math that I use to measure a bin is different than what I learned in high school. Kinda wonder if gov isnt doing it on pourpose so there is more grain in there. Also like you said 5# wt makes a heck of a difference. When I get a sample who knows whats 15' down and 2/3 accross in the bin. One guy had me remeasure because what his grain cart scale said didnt agree with me. He had accuall weight and I was using volume and factors, setteling, and so on. Bigger the bin the more it will get off it seams. They have factors, but Ive measured for 10 years now and its just a fact of life. The first year I measured I went out to this place. Proably about 5000-8000bu bin. Measrued it and a week later had to go back. They had it full to the about 3' down from the lid on top of the peek. I called it a 10'. Any way the year before they said they didnt have it as full and it measured out 1000bu more than what I measured. They hauled it all to an elevator and it was within 100bu. So I climed up to the top and they held a 10' piece of pipe up from the eve. I was standing on top of the corn in the bin which I figured was 10' up form the eve. The 10' pipe went above my head! Couldnt figure that one out, but the brothers say me do it and agreed that the peek wasnt that tall. Went with my orignal measruement and they had me come out untill there were no more LDP's. Your guess is as good as mine on that deal!

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