Page:Timber and Timber Trees, Native and Foreign.djvu/146

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Table XLVII.
Tensile Experiments.

Number of the specimen.	Dimensions of each piece.			Specific gravity.	Weight the piece broke with.	Direct cohesion on 1 square inch.
	Inches.				lbs.	lbs.
19	$\scriptstyle {\left.{\begin{matrix}\ \\\\\ \\\ \\\ \\\ \ \end{matrix}}\right\}\,}$	2 × 2 × 30	$\scriptstyle {\left\{{\begin{matrix}\ \\\\\ \\\ \\\ \\\ \ \end{matrix}}\right.}$	787	14,564	3,641
20				800	16,240	4,060
21				724	10,916	2,729
22				805	14,000	3,500
23				726	10,368	2,592
24				821	13,152	3,288
Total	...			4663	79,240	19,810
Average.	...			777	13,207	3,301

 

Table XLVIII.
Vertical Experiments on Cubes of

Number of the specimens.	1 Inch.	2 Inches.	3 Inches.	4 Inches.
	Crushed with	Crushed with	Crushed with	Crushed with
	Tons.	Tons.	Tons.	Tons.
25 to 28	2.3750	12.500	23.75	37.50
29 , 30	2.5000	12.500	—	—
31 , 32	2.6250	10.750	—	—
33 , 34	2.5000	10.500	—	—
35 , 36	2.1250	10.750	—	—
37 , 38	2.3750	11.125	—	—
Total	14.500	68.125	—	—
Average .	2.4166	11.354	23.75	37.50
Do. per in.	2.4166	2.838	2.64	2.343