Page:Timber and Timber Trees, Native and Foreign.djvu/220

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Table CI.—Iron-Bark (Australia).
Transverse Experiments

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.

 

Table CII.
Tensile Experiments.

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	$\scriptstyle {\left.{\begin{matrix}\ \\\\\ \\\ \ \end{matrix}}\right\}\,}$	2 × 2 × 30	$\scriptstyle {\left\{{\begin{matrix}\ \\\\\ \\\ \ \end{matrix}}\right.}$	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

 

Table CIII.
Vertical or Crushing Strain on cubes of 2 inches.

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.