Steel bar, rolled or tilted Shropshire, solid, crossway 49,651 48,912 49,281 22.00 43,822 19-56 49,100 46,798 47,950 21 40 51,675 47,224 49,208 21.96 Staffordshire, solid, lengthway 45,329 42,314 Staffordshire, solid, crossway mean of the four kinds, &c. ::: 148,294 65,158 107,160 47.8 Kirkalay, 66 Exp. 90,049 40.2 100,983 45.0 104,888 46.8 tempered blue 112,119 50.0 highly heated and cooled in oil 215,400 96 1 hardened and annealed 121,716 54.3 welded joints 52,784 38,772 45,778 20.4 Steel-plate, solid or unpunched 81,133 36.22 H. Sharp. punched plate, not annealed 49,235 22.00 annealed 79,289 67,157 73,562 32.84 drilled plate, annealed or not 83,485 78,893 81,189 36.24 double-riveted joints, punched holes, annealed plate,) steel rivets 96,163 87,606 91,885 41.02 102,593 72,408 90,000 40 1 Kirkaldy. 97,150 67,686 81,960 36.6 99 mean of the two 99,870 70,047 85,977 38.4 53,245 23 77 H. Sharp. 42,380 18.92 38,443 17 43 48,160 21 5 6.37 E. Clark. Telford. TABLE 1.-Of the TENSILE STRENGTH OF MATERIALS-continued. Copper, cast, pure Copper bolts, 24, 2, 1, and inch diameter 36,400 35,280 35,930 16.0 cast 22,570 19,072 20,638 9.21 Rennie. " hammered 33,792 15.1 63,230 28.2 29,000 12.95 Anderson. 30,700 13 70 33,000 14.73 38,000 17 00 1,814 0.81 Rennie. ,, 17,709 7.9 22,200 9.8 19,500 8.7 17,850 15,784 17,077 7.6 19,600 16,700 18,150 8.1 Muschenbroek. Bevan. 6. Barlow. 2. Bevan. 12,000 5.4 Muschenbroek. 11,626 11,388 11.467 5.1 3. Barlow. Muschenbroek. Authority. Kind of Wood. Max. Mio. Mean. Bevan. Maple Oak, English 20,348 19,595 19,890 8.9 3. Barlow. 15,500 6.9 Bevan. 8,224 7,950 8,041 3.6 21,800 16,500 19,150 8.5 17,400 7.8 Bevan. Rondelet. 3. Barlow. Bevan. 12,008 8,889 10,389 4.6 6. "Barlow. 19,800 15,000 17,400 7.8 2. Bevan. 17,300 7.7 Muschenbroek. 20,000 9.0 Muschenbroek. 13,950 6.2 Rondolet. 11,400 5.1 Bevan. Pear-tree 11,537 8,834 9,822 4.4 3. Barlow. sweet Muschenbroek. Bevan. Norway Plane-tree Poplar Sycamore Teak old Walnut. Pine, St. Petersburg 13,300 5.9 Bevan. 7,818 3.5 Muschenbroek. .. 11,800 5.3 Muschenbroek. |