6 o 
TIMBER AND TIMBER TREES. [chap. 
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 
49—52 
53—56 
57—60 
6l—64 
65-68 
69—72 
Tons. 
2750 
2700 
2 'OOO 
2700 
2-250 
2-375 
Tons. 
7- ooo 
8 - ooo 
9- 500 
8-500 
8- 125 
9- 250 
Tons. 
20-000 
1 9 - 375 
20- I25 
19- 625 
20- 500 
20-125 
Tons. 
33-750 
3 1- 875 
33-125 
32 - 875 
33- I25 
33-50O 
Total . 
I 4-375 
5 o -375 
II9-750 
198-250 
Average . 
2-396 
8-396 
I 9-958 
33 - 04 I 
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 
73—76 
77—80 
81—84 
85—88 
89—92 
93—96 
Tons. 
3-750 
3-500 
3'375 
3^25 
3-500 
3^25 
Tons. 
1 3 'OOO 
I2-500 
I 4-375 
I4-000 
I 3'875 
I4-I25 
Tons. 
28- 750 
29 - 750 
29-125 
28 -500 
29-125 
28-875 
Tons. 
50-875 
50 - I 25 
49^75 
50-625 
49^75 
51- I25 
Total . . 
21-375 
8 f 875 
I 74 -I 25 
302-500 
Average . 
3-562 
1 3 '646 
29 -021 
50 - 4 I 7 
Do. per in. 
3-562 
SAII 
3-225 
3 -I 5 I 
