. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 6 BULLETIlSr •789, U. S. DEPARTMENT OE AGRICULTURE. If 4X^Xai'=N, not equal to 1, Let ', then the formula becomes, V=D'X F 1-. V L = IV For values of Tf other than 50 pounds V and L may be determmed by du-ect proportion. (See Example 4, page 14.) HORIZONTAL REINFORCING FOR CYLINDRICAL CONCRETE BINS. In a cylindrical tank the total pressure on any diameter for 1 foot in height is equal to the lateral pressure per square foot at that level times the diameter in feet, or LxD. This pressure, tending to burst the tank
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 6 BULLETIlSr •789, U. S. DEPARTMENT OE AGRICULTURE. If 4X^Xai'=N, not equal to 1, Let ', then the formula becomes, V=D'X F 1-. V L = IV For values of Tf other than 50 pounds V and L may be determmed by du-ect proportion. (See Example 4, page 14.) HORIZONTAL REINFORCING FOR CYLINDRICAL CONCRETE BINS. In a cylindrical tank the total pressure on any diameter for 1 foot in height is equal to the lateral pressure per square foot at that level times the diameter in feet, or LxD. This pressure, tending to burst the tank, produces tension in the walls, and, smce two cross sections of the wall are cut by each diameter, the total tensile stress on each LxD cross section of the wall for 1 foot in height is equal to —^ As- suming that all of the tensile stress is taken by the steel reinforciag, and mdicating the allowable unit stress in the steel by Js, the cross- sectional area of steel required in square inches per foot in height at that level is given by the formula: LxD ^-2xfs This formula may be written, a L 1 D'-D^2xj, L H SiQce the pressure .factor jj is determined by jj, we can tabulate values for the steel factors -r^for different values of j^. (See Table 2.). 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 United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.
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