Storage of ear corn on the farm. Page: 15
ii, 27 p. : ill., 1 map, plans ; 23 cm.View a full description of this book.
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trash as possible; then care should be used to spread the remaining
shelled corn and foreign material as uniformly as possible. Use a
suitable spreading device or move the elevator spout frequently.
Two types of elevators are in general use in the Corn Belt. The first,
a vertical stationary elevator, is used in many double-crib buildings
(figs. 6 and 10). Such an elevator is practical only in this type of
building and when there is a cupola large enough to house the elevator
head, but it has the advantage of being able to reach to any ordinary
height. The second, a portable flight-type elevator, is the one most
commonly used in the Corn Belt. It can be used to fill a double crib
up to 25 or 30 feet in height (fig. 5), single or temporary cribs (figs.
3,4, and 7), or grain bins. Both types of elevators will handle ear corn
or shelled or threshed grain.
For convenience in emptying, a crib should be provided with either
a shelling trench (see fig. 6) or a shelling door just above the floor
along one side of the crib. , With either of these arrangements, a large
part of the corn in the crib will roll by gravity into a sheller conveyor,
or "drag," 'placed in the shelling trench or along the side of the crib.
CRIB CONSTRUCTION
FOUNDATIONS
The crib foundation should have footings large enough to prevent
damage to t;he building by uneven settling. On most soils, shallow
footings should have a bearing of 1 square foot on the ground for each
40 bushels of ear corn or each 50 bushels of shelled corn or wheat.
For a masonry building, the foundation walls should go down below
the.depth to which the ground freezes, to prevent the cracking of walls
caused by the heaving action of frost. Heaving by frost action is not
a serious hazard with wood-frame or steel cribs; these structures are
flexible enough to'stand any ordinary amount of distortion caused by
such heaving. For permanent frame cribs, the foundation should go
down at least 18 inches below ground surface. This minimum should
be used only where no soil will wash away from the foundation.
Foundations should extend above ground far enough to protect wood
from moisture and to prevent rats from working under the floor. If a
wood floor is used, the lower edge of the joists should be at least 12
inches above the ground; 15 to 18 inches is better. Permanent foundations
should be built of masonry, preferably concrete. In a continuous
foundation wall, two %3-inch or l/-inch reinforcing bars, one near the
bottom and one near the top, add considerably to the strength and aid
in preventing cracking of the concrete.
Semipermanent or temporary foundations of concrete blocks or other
materials of equal strength and permanence have been used for small
and medium-size cribs. If the blocks are of good enough quality to15
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Shedd, C. K. (Claude Kedzie), 1884-. Storage of ear corn on the farm., book, September 1949; Washington D.C.. (https://digital.library.unt.edu/ark:/67531/metadc9960/m1/17/: accessed July 18, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.