MISCELLANEOUS TABLES. 
147 
TABLE X. Continued. 
shewing the Strength and Elasticity of various species of Timber, 
according to the Experiments made at Woolwich Dock Yard, by 
Peter Barlow, Esq., F.R.S., &c. 
.2 
a 
Xl,, 
Name of the Wood. 
w 
3 
Teak 
^ 3 
\ ^ 
o 
„ Canadian ... 
3 
3 
3 
A ell 
3 
3 
Elm 
3 
3 
3 
Fir, New England 
6 
„ Riga 
10 
„ Mar Forest ... 
13 
3 
71 
Value of E 
from the 
formula 
301730 
211160 
145040 
241920 
145770 
121430 
205630 
169190 
85880 
153080 
230000 
186580 
143450 
105190 
114450 
182250 
Greatest 
weight while 
the Elasticity 
remains per- 
fect, 
the breaking 
weight being 
1-0000* 
•3197 
•1773 
•3231 
•3343 
•3571 
•2848 
•2913 
•2528 
•3232 
•2412 
•2935 
•3571 
•3082 
•2746 
•3230 
•3055 
Reci- 
procal 
of the 
same. 
3-127 
5-640 
3-094 
2^991 
2- 800 
3- 511 
3^432 
3-955 
3- 093 
4- 144 
3-406 
2- 800 
3^244 
3- 640 
3^095 
3-273 
Specific 
gravity. 
745 
579 
952 
872 
756 
993 
760 
676 
553 
660 
657 
553 
745 
697 
544 
593 
Weight of one 
Cubic Foot. 
InKs. Incwts. 
46^56 
36- 18 
59-50 
54-50 
47-25 
62-06 
47-50 
42- 25 
34-56 
41-25 
41-06 
34-56 
46-56 
43- 56 
34-00 
37- 06 
■4157 
3231 
5312 
•4866 
4218 
5541 
■4241 
3772 
■3086 
•3683 
■3666 
■3086 
-4157 
•3889 
•3035 
-3309 
' When the weight is uniformly loaded, multiply the greatest weights &c. in col. 4 by -8; 
and the reciprocals of the same in col. 5 by 1'25. 
* * 28 of the above experiments were made upon scantlings 2 inches square and 6 feet long, 
and 43 upon scantlings 2 inches square and 7 feet long, clear of the supports ; the 
weig;hts in each experiment being suspended from the middle. 
This Table is constructed from the Experiments, in the Table of Data, published in Bar- 
low's Treatise on the Strength of Materials, 1845 edition, page 148. 
