15-1/4 | 627.165 | 19-1/8 | 985.035 | 23 | 1,423.600 15-3/8 | 637.237 | 19-1/4 | 998.230 | 23-1/8 | 1,454.490 15-1/2 | 647.310 | 19-3/8 |1,010.925 | 23-1/4 | 1,485.380 15-5/8 | 657.382 | 19-1/2 |1,023.620 | 23-3/8 | 1,516.270 15-3/4 | 667.455 | 19-5/8 |1,036.315 | 24 | 1,547.160 -------------------------------------------------------------------- To find the weight of discs made of carbon steel, in diameters up to and including 12 in., without any allowance for finishing multiply the per foot weight of round bar steel, shown herewith by the decimal equivalent of a foot given in the following table: TABLE 36.--DECIMAL EQUIVALENTS OF A FOOT --------------------------------------------------------------------- In. | 0 | 1/8 | 1/4 | 3/8 | 1/2 | 5/8 | 3/4 | 7/8 -----|-------|-------|-------|-------|-------|-------|-------|------- 0 | 0.000 | 0.010 | 0.021 | 0.031 | 0.042 | 0.052 | 0.063 | 0.073 1 | 0.083 | 0.094 | 0.104 | 0.115 | 0.125 | 0.135 | 0.146 | 0.156 2 | 0.167 | 0.177 | 0.188 | 0.198 | 0.208 | 0.219 | 0.229 | 0.240 3 | 0.250 | 0.260 | 0.270 | 0.281 | 0.292 | 0.302 | 0.313 | 0.323 4 | 0.333 | 0.344 | 0.354 | 0.364 | 0.375 | 0.385 | 0.396 | 0.406 5 | 0.416 | 0.427 | 0.437 | 0.448 | 0.458 | 0.469 | 0.479 | 0.480 6 | 0.500 | 0.510 | 0.520 | 0.531 | 0.542 | 0.552 | 0.563 | 0.573 7 | 0.583 | 0.594 | 0.604 | 0.615 | 0.625 | 0.635 | 0.646 | 0.656 8 | 0.666 | 0.677 | 0.687 | 0.698 | 0.708 | 0.719 | 0.729 | 0.740 9 | 0.750 | 0.760 | 0.770 | 0.781 | 0.792 | 0.802 | 0.813 | 0.823 10 | 0.833 | 0.844 | 0.854 | 0.865 | 0.875 | 0.885 | 0.896 | 0.906 11 | 0.916 | 0.927 | 0.937 | 0.948 | 0.953 | 0.969 | 0.979 | 0.990 --------------------------------------------------------------------- EXAMPLE.--If the weight of a carbon steel disc 7 in. diameter, 1-5/8 in. thick is desired, turn to page 233, where the per foot weight of 7 in. round is given as 131.6 lb. Multiply this by the decimal equivalent of 1-5/8 in., or 0.135, as shown in the above table, and the product will be the net weight of the disc. 131.61 lb. = the weight of 1 ft. of 7 in. round. 0.135 = the per foot decimal equivalent of 1-5/8 in: ------------ 65805 39483 13161 ------------ 17.76735 lb. = weight of disc 7 in. diam. 1-5/8 in. thick without any allowance for finishing. AUTHORITES QUOTED A ADDIS, W H. AMERICAN MACHINISTS' HANDBOOK AMERICAN STEEL TREARERS' SOCIETY AMERICAN GEAR MFRS. ASSO. AUTOMATIC AND ELECTRIC FURNACES LTD. ARNOLD, PROF. J. O. B BURLEIGH, R. W. BORDEN, B. BOKER, HERMAN & Co. BROWN INSTRUMENT Co. BROWN-LIPE-CHAPLIN Co. C CAMPBELL, H. H. CARHART, H. A. CLAYTON, C. Y. CURTIS AIRPLANE Co. E ENGLEHARD, CHARLES ENSAW, HOWARD F FIRTH-STERLING STEEL Co. FIRTH, THOMAS & SONS FOWLER, HENRY G GILBERT & BARKER H HAYWAHD, C. R. HOWE, DR. H. M. HOOVER STEEL BALL CO. HEATHCOTE, H. L. HARRIS, MATTHEW HUNTER, J. V.