Concrete And Reinforced Concrete a Condensed Practical Treatise On the Problems
Concrete And Reinforced Concrete a Condensed Practical Treatise On the Problems
Webb, Walter Loring, 1863-1941
The book Concrete And Reinforced Concrete a Condensed Practical Treatise On the Problems was written by author Webb, Walter Loring, 1863-1941 Here you can read free online of Concrete And Reinforced Concrete a Condensed Practical Treatise On the Problems book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Concrete And Reinforced Concrete a Condensed Practical Treatise On the Problems a good or bad book?
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68. Assume that &' equals fourteen times the slab thickness, or 70 inches. (See page 90. ) Substituting these values in the upper part of Equation (12) in order to find the value of c, we find that c = 390 pounds per square inch. Substituting the known values in the second half of Equation (12), to obtain a more precise value of s, we find that s = 15, 734 pounds per square inch. The required area (3. 43 square inches) of the bars will be afforded by six i-inch round bars (6 X . 60 = 3. 60) wit...h consid- erable to spare. From Table XVIII we find that six 1-inch bars, either square or round, if placed in one row, would require a beam 14. 72 inches wide. This is undesirably wide, and so we shall use two rows, three in each row, and make the beam 9 inches wide. This will add an inch to the depth, and the total depth will be 22 + 3 = 25 inches. The concrete below the slab is therefore 9 inches wide by 20 inches deep, instead of 12 inches wide by 15 inches deep, as assumed when computing the dead load, but the weight is the same.
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