198
TIMBER AND TIMBER TREES.
[CHAP.
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 | .75 | .00 | 5.00 | 820 | 957 | 855 | 205.00 |
2 | 1.25 | .00 | 6.25 | 725 | 885 | 819 | 181.25 |
3 | 1.35 | .10 | 4.60 | 955 | 1023 | 934 | 238.75 |
4 | .75 | .05 | 7.50 | 840 | 987 | 851 | 210.00 |
5 | 1.00 | .05 | 6.50 | 920 | 1013 | 908 | 230.00 |
6 | 1.00 | .05 | 6.50 | 915 | 1023 | 903 | 228.75 |
Total | 6.10 | .25 | 36.35 | 5175 | 5888 | 5270 | 1293.75 |
Average | 1.01 | .04 | 6.06 | 862.5 | 981.33 | 878.33 | 215.625 |
Remarks.—Each piece broke with scarph-like fracture, 8 to 10 inches in length.
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 | ... | 31,080 | 7,770 | ||
8 | ... | 30,800 | 7,700 | |||
9 | ... | 31,360 | 7,840 | |||
10 | ... | 31,360 | 7,840 | |||
11 | ... | 22,120 | 5,530 | |||
12 | ... | 22,960 | 5,740 | |||
Total | ... | ... | 169,680 | 42,420 | ||
Average | ... | 981. | 28,280 | 7,070 |