Page:Timber and Timber Trees, Native and Foreign.djvu/83

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Table XXI.
Vertical or Crushing Experiments on British Oak,
with 16 square inches of base.

Number of the specimen.	Dimensions of the pieces.					Specific gravity.	Crushed with	Do. on the square inch.
	Inches.						Tons.	Tons.
136	4	×	4	×	10	713	34.875	2.179
137	4	×	4	×	11	658	33.750	2.110
138	4	×	4	×	12	639	32.000	2.000
139	4	×	4	×	13	665	29.500	1.843
140	4	×	4	×	14	752	31.250	1.953
141	4	×	4	×	15	742	28.500	1.781
142	4	×	4	×	16	688	40.750	2.517

Note.—These were respectively Nos. 132, 123, 125, 124, 127, 129, and 130 of Table XIX., shortened after the first experiments upon them, and further seasoned before the second trial.

 

Table XXII.
Vertical or Crushing Experiments on British Oak;
sundry scantlings.

Number of the specimen.	Dimensions of the pieces.					Specific gravity.	Crushed with	Do. on the square inch.
	Inches.						Tons.	Tons.
143	3′	×	3′	×	2	820	32.125	3.569
144	4′	×	4′	×	2	822	53.125	3.320
145	6′	×	6′	×	12	864	131.000	3.640
146	6′„	×	6′„	×	18	926	154.000	4.277
147	6′	×	6′	×	24	822	122.200	3.394
148	6′„	×	6′„	×	36	888	122.200	3.394
149	9′	×	9′	×	12	1.024	223.600	2.760
150	9′	×	9′	×	15	918	247.800	2.898
151	9′		9′		18	889	244.800	2.860
152	9′		9′		21	883	247.000	2.887
153	9′	×	10′	×	15	904	397.000	4.175
154	10′	×	11′	×	18	794	307.000	2.722
155	10′„	×	11′„	×	21	819	327.800	2.907
156	9′	×	10′	×	24	905	307.000	3.239