Page:Timber and Timber Trees, Native and Foreign.djvu/248

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Table CXVIII.
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.
7	$\scriptstyle {\left.{\begin{matrix}\ \\\\\ \\\ \\\ \\\ \\\ \\\ \ \end{matrix}}\right\}\,}$	2 × 2 × 30	$\scriptstyle {\left\{{\begin{matrix}\ \\\\\ \\\ \\\ \\\ \\\ \\\ \ \end{matrix}}\right.}$	740	32,480	8,120
8				738	31,920	7,980
9				765	42,000	10,500
10				753	38,640	9,660
11				735	33,040	8,260
12				760	42,280	10,570
Total.	...			4491	220,360	55,090
Average .	...			748	36,727	9,l82

 

Table CXIX.
Vertical or Crushing Strain 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.
13–16	3.000	15.75	37.125	62.500
17–20	3.125	16.25	36.625	61.000
21, 22	3.500	17.00	—	—
23, 24	3.625	16.00	—	—
Total	13.250	65.00	73.750	123.5.00
Average	3.312	16.25	36.875	61.750
Do. per in.	3.312	4.062	4.097	3.859

E = 618550.S = 2415.