. Concrete 56 CONCRETE SILOS Figure 41, or suspended from a frame resting on top of forms, the power in either case being furnished by a horse. The derrick shown in the figure may be built to any height required, in the following manner: Pieces marked "A" (2x6 inches, 16 feet long) are spliced together until a height at least 6 feet greater than that of the com- pleted walls is obtained. Pieces "B" (1x6 inches) are nailed to "A" in such a manner as to make an I-beam as shown in the sectional view in the center. The cross arm is made of a 2x6 inch piece 3
. Concrete 56 CONCRETE SILOS Figure 41, or suspended from a frame resting on top of forms, the power in either case being furnished by a horse. The derrick shown in the figure may be built to any height required, in the following manner: Pieces marked "A" (2x6 inches, 16 feet long) are spliced together until a height at least 6 feet greater than that of the com- pleted walls is obtained. Pieces "B" (1x6 inches) are nailed to "A" in such a manner as to make an I-beam as shown in the sectional view in the center. The cross arm is made of a 2x6 inch piece 3 feet long spiked to piece '''A' and prevented from raising at the back end by piece "B" which runs flush with the top of the arm. The brace is made of 2x6 inch material, 3 feet 2 inches long. The three No. 9 guy wires are fastened to the cross arm and brought around in grooves provided for the purpose and fastened to stakes driven in the ground for a considerable distance from the bottom of the derrick. This device, which has been recommended by the Iowa Experiment Station, is said to have been tested and found safe for loads less than 400 Floor Line of Tank Fig. 42. Two monolithic concrete silos, built by the Polk- Genung-Polk Company for Mr. B. W. Lord, Danville, Ky. The right hand silo has a water supply tank 4 feet in depth on top. Both silos are 16 feet in diameter by 45 feet in Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Universal Portland cement co. [from old catalog]. [n. p. ]
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Keywords: ., bo, bookcentury1900, bookdecade1910, bookpublishernp, bookyear1912
