Page:Timber and Timber Trees, Native and Foreign.djvu/155

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Table LIV.—Chow, or Menkabang Penang (Borneo).
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	1.000	.000	2.750	904	1144.0	790.0	226.00
2	1.000	.050	4.100	1231	1100.0	1119.0	307.75
3	1.000	.000	1.750	766	1136.0	674.0	191.50
4	.750	.050	3.500	1122	1124.0	998.0	280.50
5	1.000	.050	2.650	814	1070.0	761.0	203.50
6	.750	.000	2.25	1013	1120.0	904.0	253.25
Total	5.500	.150	17.000	5850	6694.0	5246.0	1462.50
Average	.916	.025	2.833	975	1115.6	874.3	243.75

Remarks.—Nos. 1, 2, 4, and 6 broke with fractures about 12 inches in length; 3 and 5, rather shorter.

 

Table LV.
Tensile Experiments.

Number of the specimen.	Dimensions of each piece.			Specific gravity.	Weight the piece broke with.	Direct cohesion on 1 square in.
	Inches.				lbs.	lbs.
7	$\scriptstyle {\left.{\begin{matrix}\ \\\\\ \\\ \\\ \\\ \\\ \ \end{matrix}}\right\}\,}$	2 × 2 × 30	$\scriptstyle {\left\{{\begin{matrix}\ \\\\\ \\\ \\\ \\\ \\\ \ \end{matrix}}\right.}$	1100	25,760	6,440
8				1136	25,760	6,440
9				1144	31,640	7,910
10				1170	31,360	7,840
11				1120	29,456	7,364
Total .	...			5670	143,976	35,994
Average	...			34	28,795	7,199

 

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

No. 12.	No. 13.	No. 14.	No. 15.	Total.	Average.	Ditto on square inch.
Tons.	Tons.	Tons.	Tons.	Tons.	Tons.
22.750	22.500	22.250	22.446	89.946	22.486	5.621

E = 1,013836. S = 2559.