200
TIMBER AND TIMBER TREES.[CHAP.
Number of the specimen. |
Deflections. | Total weight required to break each peice. |
Specifc gravity |
Weight reduced to specfic 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 | 0.85 | .0 | 3.75 | 1,460.0 | 1163 | 1255 | 365.0 |
2 | 1.00 | .0 | 3.750 | 1,460.0 | 1146 | 1195 | 342.5 |
3 | 0.90 | .0 | 4.000 | 1,400.0 | 1142 | 1226 | 350.0 |
4 | 1.00 | .0 | 4.00 | 1,400 | 1116 | 1254 | 350.0 |
Total | 3.75 | .0 | 15.250 | 5,630.0 | 4567 | 4930 | 1407.5 |
Average | 0.94 | .0 | 3.812 | 1,407.5 | 1142 | 1232 | 351.9 |
Remarks.—No 1, wiry fracture, 16 inches in length; No. 2, wiry fracture, 12 inches in length; No. 3, wiry fracture, 10 inches in length; No. 4, broke short to one-third depth, then splintery fracture, 10 inches in length.
Number of the specimen. |
Dimensions of each peice. |
Specfic gravity. |
Weight the peice broke with. |
Direct cohesion on 1 square in. | ||
Inches. | lbs. | lbs. | ||||
5 | 2 × 2 × 30 | 1142 | 34,160 | 8,540 | ||
6 | 1146 | 26,880 | 6,720 | |||
7 | 1163 | 39,480 | 9,870 | |||
Total | ... | 3451 | 100,520 | 25,130 | ||
Average | ... | 1150 | 33,507 | 8,377 |
No. 8. | No. 9. | No. 10. | No. 11. | Total. | Average. | Ditto on 1 square inch. |
Tons | Tons | Tons | Tons | Tons | Tons | |
18.500 | 17.625 | 18.500 | 19.000 | 73.625 | 18.406 | 4.601 |
E = 960740.S = 3695.