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Tractor Talk Discussion Forum

OT Measuring corn in bin

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super99

12-11-2007 15:11:00




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It was posted here a while back, and I went thru the archives and couldn't find it so I'll ask again. What is the formula for figuring out how much corn is in a bin? I have a 18' with 14' of corn leveled off and a 21' with 15 1/2' of corn in it leveled off. I called FSA 3 weeks ago to have them measure bin and still haven't heard back from them and I would like to seal the corn and pay some bills before the end of the year. Chris

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JoeBob/IN

12-11-2007 18:45:39




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 Re: OT Measuring corn in bin in reply to super99, 12-11-2007 15:11:00  
You want the FSA out there measuring it? Just apply for the loan and they will spot check ya real soon and tell you how much they THINK you have! Guess on the low side. So without doing too much math I will guess that your 18' bin is full to about 5 1/2 rings high and each ring holds close to 525 bushels so that is about 2850 bushels. Now the 21' is probably 5 3/4 rings full and at about 725 bushels a ring that would be about 4300 bushels. All math done in my head and are rough guesses.

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super99

12-11-2007 16:45:52




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 Re: OT Measuring corn in bin in reply to super99, 12-11-2007 15:11:00  
Thanks, guys. I skipped school to plow the day they had math class, so I'm not very good with figuring these kind of things out. I used Ia Tire Guy's website and added in the test weight of the 2 loads I sold and they came up with 2945 on the little bin and 4490 on the big one, so you were pretty close to them. I need to write down that website, I hadn't heard of it before. thanks, Chris



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TPIA

12-11-2007 16:35:44




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 Re: OT Measuring corn in bin in reply to super99, 12-11-2007 15:11:00  
The 18 ft bin has 203 bu per ft the 21ft bin has 277 bu per ft Having measured bins for FSA for the past 35+ YEARS . get a test wt of corn. Example if bin is 18ft diam and has 10ft corn 203x10=2030 bu @ 59#tw take 59-56=3# added wt per bu x2030 bu = 6090 add'l pounds divide 56 into the 6090#=109 addional bu, 2030bu plus 109 bu= 2139 bu .You will be very close on it TOM



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iowa_tire_guy

12-11-2007 16:11:48




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 Re: OT Measuring corn in bin in reply to super99, 12-11-2007 15:11:00  
Chris, Take a look at this web site.

Link

Hershal



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1936

12-11-2007 16:01:10




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 Re: OT Measuring corn in bin in reply to super99, 12-11-2007 15:11:00  
No no corn bread is square and pie are round--rather an old story. Still enjoy the punch line to a rather old story.



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NBAllen

12-11-2007 15:32:31




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 Re: OT Measuring corn in bin in reply to super99, 12-11-2007 15:11:00  
Your bin volume is:

Volume = (1/4)*pi*D^2*H [ft^3]
pi = 3.14159 (approximately)
D = bin diameter, in feet
H = height of grain, leveled, in feet
bushels / ft^3 = .8036

This assumes the bin floor is flat.
The .8036 is the conversion for bushels_volume, not bushels_weight. You would need the weight of a bushel of YOUR corn to calculate the weight of corn in the bin.

Nathaniel



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R Aiken

12-11-2007 15:26:01




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 Re: OT Measuring corn in bin in reply to super99, 12-11-2007 15:11:00  
pie x (radius,squared) x hight = cu ft cu ft x .8 = bu.

I think, havent done this in 40 years



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Heat Houser

12-11-2007 15:25:51




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 Re: OT Measuring corn in bin in reply to super99, 12-11-2007 15:11:00  
The formula that I use (if memory is correct) is:
pi X radius squared X height X 0.8 = Bushels

Your 18 foot bin:
3.1416 X (9 X 9) X 14 = Cubic feet
3.1416 X 81 X 14 = 3562.57 cubic feet
3562.57 X 0.8 = 2850 bu.

Your 21 ft, 4295 bu.

Please check my claculations before going to the FSA.



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Allan In NE

12-11-2007 15:20:24




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 Re: OT Measuring corn in bin in reply to super99, 12-11-2007 15:11:00  
The ONLY way you can do that is to WEIGH the corn, figure it down to 15.55 moisture and then divide by 56 lbs.

Any other method is nothing more than a guess because volume measurements just don't work with grain (don't take into account the air spaces between the kernels).

Even the differences between rounds and large flat 5 kernels will make a difference.

Just my opinion,

Allan



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