Page:Timber and Timber Trees, Native and Foreign.djvu/153

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Table LI.—Iron-wood, or Pyengadu (Burmah).
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	750	.000	4.50	1240.0	1150.00	1078.0	310.00
2	1.000	.050	4.60	1250.0	1225.00	1020.0	312.50
2	1.000	.050	4.90	1490.0	1150.00	1291.0	372.50
4	.850	.000	3.25	1110.0	1165.00	953.0	277.50
5	.900	.000	3.50	1130.0	1225.00	9220	282.50
6	1.250	.100	4.75	1420.0	1143.00	1242.0	355.00
Total	5.750	.200	25.50	7640.0	7058.00	6506.0	1910.00
Average	.958	.033	4.25	1273.3	1176.33	1084.3	318.33

Remarks.—Nos. 1, 2, 3, and 6 broke with about 12 inches length of fracture, 4 and 5 with somewhat less. All were fibrous and wiry.

 

Table LII.
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	$\scriptstyle {\left\{{\begin{matrix}\ \\\\\ \\\ \\\ \\\ \\\ \\\ \ \end{matrix}}\right.}$	1143	35,840	8,960
8				1150	41,440	10,360
9				1150	40,320	10,080
10				1225	38,640	9,660
11				1165	38,080	9,520
12				1225	37.420	9,355
Total	...			7058	231,740	57,935
Average	...			1176	38,623	9,656

 

Table—LIII.
Vertical or Crushing Strain on cubes of 2 inches.

No. 13.	No. 14.	No. 15.	No. 16.	No. 17.	No. 18.	Total.	Average.	Ditto on 1 square inch.
Tons.	Tons.	Tons.	Tons.	Tons.	Tons.	Tons.	Tons.
20.750	20.625	20.875	20.500	21.250	21.000	125.000	20.833	5.208

E = 1,031940.S = 3342.