Page:Timber and Timber Trees, Native and Foreign.djvu/109

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Table XXX. —Sardinian Oak.
Transverse Experiments.

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	2.65	.050	5.75	765	1002.0	763.00	191.25
2	2.75	.10.0	5.65	659	1030.0	639.00	164.75
3	3.15	.15.0	4.85	630	1025.0	614.00	157.50
4	2.25	.15.0	8.00	906	943.0	961.00	226.50
5	2.50	.15.0	8.25	776	973.0	899.00	194.00
6	2.35	.15.0	6.50	812	970.0	838.00	203.00
Total	15.65	.75.0	39.00	4,548	5943.0	4714.00	1137.00
Average	2.608	.125	6.5.0	758	990.5	785.66	189.5.0

Remarks.—Nos. 1, 2 , and 3 broke rather short to 1-5th the depth, and had about 12 inches length of fracture under it. 4, 5, and 6 had 13 inches length of fibrous fracture.

 

Table XXXI.—Sardinian Oak.
Vertical or Crushing Strain on cubes of 2 inches.

No. 7.	No. 8.	No. 9.	No. 10.	No. 11.	No. 12.	Total.	Average.
Tons.	Tons.	Tons.	Tons.	Tons.	Tons.	Tons.	Tons.
10.00	10.125	10.625	10.750	10.000	11.000	62.500	10.416
[1]2.50	2.531	2.656	2.687	2.500	2.750	10.416	2.604
On 1 square inch.

E = 363450.S = 1990.