Page:Timber and Timber Trees, Native and Foreign.djvu/101

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Table XXIV.—French 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	1.500	.000	4.35	720.0	966.0	745	180.000
2	1.350	.050	7.00	930.0	977.0	952	232.500
3	1.500	.050	6.05	901.0	983.0	916	225.250
4	1.550	.100	5.50	895.0	992.0	902	223.750
5	1.650	.000	7.00	915.0	979.0	934	228.750
6	1.350	.050	6.10	904.0	962.0	939	226.000
Total	8.900	.250	36.00	5,265.0	5859.0	5388	1316.250
Average	1.483	.041	6.00	877.5	976.5	898	219.375
The average of six other specimens, of equal quality to the above, gave—
7—12	1.583	.125	7.583	831.0	1082.0	768	207.7500
The mean of the whole—
	1.533	.083	6.791	854.0	1029.5	833	213.562

Remarks.—All the specimens broke with a fibrous fracture fully 10 inches in length.

 

Table XXV.
Tensile Experiments.

Number of the specimen.	Dimension of each piece.							Specific gravity.	Weight the piece broke with.	Direct cohesion on 1 square inch.
	Inches								lbs	lbs
13	$\scriptstyle {\left.{\begin{matrix}\ \\\\\ \\\ \\\ \\\ \ \end{matrix}}\right\}\,}$	2	×	2	×	30	$\scriptstyle {\left\{{\begin{matrix}\ \\\\\ \\\ \\\ \\\ \ \end{matrix}}\right.}$	966.0	21,280	5,320
14								979.0	40,040	10,010
15								983.0	39,208	9,802
16								962.0	27,432	6,858
17								977.0	33,460	8,365
18								992.0	33,040	8,260
Total	...							5859.0	194,460	48,615
Average.	...							976.5	32,410	8,102