TABLE SHOWING THE WEIGHT OF CAST-IRON BALLS FROM 3 TO 13 INCHES IN DIAMETER. Diam. in Inches.. 3 3 3 3 4 41 42 42 5 51 51 56 61 61 63 7 71 71 72 Wt. in Pounds... 3 4 5 7 8 10 12 14 17 20 23 26 29 33 37 421 47 52 58 64 Diam. in Inches... 8 8 8 8 | 9 | 91 92 91 10 10 10 10 11 11 12 13 Wt. in Pounds..... 701 774 841 921 1001 109 118 127 137 148 159 171 1831 209 238 302 To find the weight of any cast-iron ball, cube the diameter, and multiply by the decimal 5236; the product will be the number of cubic inches in the ball, which, if multiplied by the decimal ·2607, will give the weight of the ball in pounds. WEIGHT OF CAST-IRON PLATES PER SUPERFICIAL FOOT AS PER THICKNESS. TABLE SHOWING THE WEIGHT OF BOILER-PLATES 1 FOOT SQUARE AND FROM TH TO AN INCH THICK. 7 10 12 15 17 20 22 25 27 30 321 35 37 40 TABLE SHOWING THE WEIGHT OF SQUARE BAR-IRON, FROM AN INCH TO SIX INCHES SQUARE, 1 FOOT LONG. Square... 8 1000 27 1 1 1 13 13 13 13 17 2 2 24 23 23 21 22 27 3 31 Wt. in Lbs.... 1 1 2 2 3 4 5 6 7 9 10 12 13 15 17 19 22 23 25 28 301 33 10 Square. .... 31 32 33 33 37 4 4 4 48 43 43 42 4 33 31 32 41 4층 4층 4층 Wt. in Lbs.... 353 38 41 44 47503 54 57 61 643 681 721 76 801 841 931 102 1113 1213 |