Page:Timber and Timber Trees, Native and Foreign.djvu/80

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The experiments on the vertical strength of British Oak are given in Tables XV. to XXII. inclusive.

Table XV.
Cubes of Unseasoned British Oak. Specific gravity, 966.
Vertical or crushing experiments.

Number of the specimen.	1 Inch.	2 Inches.	3 Inches.	4 Inches.
	Crushed with	Crushed with	Crushed with	Crushed with
	Tons.	Tons.	Tons.	Tons.
49—52	2.750	7.000	20.000	33.750
53—56	2.700	8.000	19.375	31.875
57—60	2.000	9.500	20.125	33.125
61—64	2.700	8.500	19.625	32.875
65—68	2.250	8.125	20.500	33.125
69—72	2.375	9.250	20.125	33.500
Total	14.375	50.375	119.750	198.250
Average	2.396	8.396	19.958	33.041
Do. perin.	2.396	2.099	2.217	2.064

 

Table XVI.
Cubes of Seasoned British Oak. Specific gravity, 740.
Vertical or crushing experiments.

Number of the specimen.	1 Inch.	2 Inches.	3 Inches.	4 Inches.
	Crushed with	Crushed with	Crushed with	Crushed with
	Tons.	Tons.	Tons.	Tons.
73–76	3.750	13.000	28.750	50.875
77–80	3.500	12.500	29.750	50.125
81–84	3.375	14.375	29.125	49.875
85–88	3.625	14.000	28.500	50.625
89–92	3.500	13.875	29.125	49.875
93–96	3.625	14.125	28.875	51.125
Total	21.375	81.875	174.125	302.500
Average	3.562	13.646	29.021	50.417
Do. per in.	3.562	3.411	3.225	3.151