Re: Grain bin capacity?

Posted by JDseller on October 18, 2012 at 08:56:52 from (208.126.196.144):

In Reply to: Grain bin capacity? posted by Dave from MN on October 18, 2012 at 07:43:24:

Dave the way to figure the volume of a bin is as follows: The radius of the bin squared, times 3.14, times the depth. Then divided by 1.25 or multiply by .8 that is the volume of a bushel.

So the 14 foot bin would be as follows:
7 x 7 x 3.14 = 153.86 cubic feet per foot
153.86 x 10 = 1538.6 total cubic feet
1538.6/1.25 = 1230.88 level full.

So if you have a cone up in the middle that would add a little. Then the adjuster at 1386 is real close.

The larger bin:
20.8/2 = 10.4 radius
10.4 x 10.4 = 108.16
108.16 x 3.14 = 339.6224
339.6224 x 18.5 = 6283.0144
6283.0144/1.25 = 5026.41152 so basically 5000 bushels

You have to remember that Brent rates those wagons with dry corn. From Brent's web site(Capacities measured with #2 corn 15% moisture (56 pound test weight) Also this is a calculated volume on Brents parts. So you would have had to fill the corners and then shake the load down and then refill it. So rarely do you get the rated capacity in them. Also they will not hold as many bushels of soybeans. Usually about 4-6% less. The test weight of soybeans is usually less than corn. Plus the volumetric measure will not match the weight exactly.

Just hauled three wagons of soybeans for a neighbor. All Parker 2500 wagons. They hold 320 bushels of dry corn. They only held 295 bushels of soybeans. This is across the scales.

Here is the way my USDA hand book describes a bushel.
( A bushel is a volume measurement. Specifically, a volume bushel is the equivalent of 1.244 cubic feet (normally, a figure of 1.25 cubic feet is used). Looking at it another way, there are 4 pecks or 32 quarts in a bushel. Test weight is a measure of the weight of grain (usually expressed in pounds) per volume bushel. Each different type of grain has a standard bushel weight at a specific moisture content. These are: corn (shelled) – 56 lbs. at 15.5% moisture, soybean – 60 lbs. at 13% moisture, oats – 32 lbs. at 14% moisture, wheat – 60 lbs. at 13.5% moisture, and barley – 48 lbs. at 14.5% moisture. Given these relationships, volume calculations can be used to get a reasonable estimate of the number of bushels. Similarly, grain weight can be used to estimate bushels and is probably the most accurate method if adjusted for moisture.)

What I have found over the years is this: That corn will have more bushels when figured by volume and soybeans a little less.

Replies:

• Re: Grain bin capacity? Mike Aylward 10:46:11 10/18/12 (0)

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