CHAP. XXII.]
CHOW
135
Number of the specimen. |
Deflections. | Total weight required to break each piece. |
Specific gravity. |
Weight reduced to specific gravity 1000. |
Weight required to break 1 square inch. | ||
With the apparatus weighing 390 lbs. |
After the weight was removed. |
At the crisis of breaking. | |||||
Inches. | Inch. | Inches. | lbs. | lbs. | |||
1 | 1.000 | .000 | 2.750 | 904 | 1144.0 | 790.0 | 226.00 |
2 | 1.000 | .050 | 4.100 | 1231 | 1100.0 | 1119.0 | 307.75 |
3 | 1.000 | .000 | 1.750 | 766 | 1136.0 | 674.0 | 191.50 |
4 | .750 | .050 | 3.500 | 1122 | 1124.0 | 998.0 | 280.50 |
5 | 1.000 | .050 | 2.650 | 814 | 1070.0 | 761.0 | 203.50 |
6 | .750 | .000 | 2.25 | 1013 | 1120.0 | 904.0 | 253.25 |
Total | 5.500 | .150 | 17.000 | 5850 | 6694.0 | 5246.0 | 1462.50 |
Average | .916 | .025 | 2.833 | 975 | 1115.6 | 874.3 | 243.75 |
Remarks.—Nos. 1, 2, 4, and 6 broke with fractures about 12 inches in length; 3 and 5, rather shorter.
Number of the specimen. |
Dimensions of each piece. |
Specific gravity. |
Weight the piece broke with. |
Direct cohesion on 1 square in. | ||
Inches. | lbs. | lbs. | ||||
7 | 2 × 2 × 30 | 1100 | 25,760 | 6,440 | ||
8 | 1136 | 25,760 | 6,440 | |||
9 | 1144 | 31,640 | 7,910 | |||
10 | 1170 | 31,360 | 7,840 | |||
11 | 1120 | 29,456 | 7,364 | |||
Total . | ... | 5670 | 143,976 | 35,994 | ||
Average | ... | 34 | 28,795 | 7,199 |
No. 12. | No. 13. | No. 14. | No. 15. | Total. | Average. | Ditto on square inch. |
Tons. | Tons. | Tons. | Tons. | Tons. | Tons. | |
22.750 | 22.500 | 22.250 | 22.446 | 89.946 | 22.486 | 5.621 |
E = 1,013836. S = 2559.