ON THE STRENGTH OF PILLARS 
435 
Table II. (Continued.) 
Length. 
Diameter. 
Mean 
Diameter. 
Weight. 
Deflection 
of middle 
Corre- 
sponding 
Breaking 
weight. 
Mean 
from break- 
Remarks. 
of pillar. 
weight. 
ing weights 
inches. 
inch. 
inch. 
lbs. oz. 
inch. 
lbs. 
lbs. 
lbs. 
60-5 
1-55 
28 10 
•13 
21857 
•15 
23481 
•21 
25105 
•48 
26729 
•62 
27135 
27135" 
f Broke immediately after the deflec- 
\ tion was taken. 
60-5 
1-57 
29 7 
•10 
21857 
•12 
23481 
>1*56 
•14 
25105 
•16 
•20 
26729 
28353 
> 28962 
•26 
29977 
•33 
30789 
•48 
31398 
31398 
[■T:C:: 120:37. 
J Broke in about five minutes. A 
60-5 
1-55 
> 
to 
00 
Ox 
28353 
j wedge broke out, showing the 
l_ neutral line. 
30-25 
•50 
•50 
l 10± 
•05 
1090 
•09 
1494 
•12 
1550 
•13 
1606 
1 662 
1662 
30-25 
00 
•08 
4357 
•10 
5701 
•13 
7045 
•22 
7717 
8389") 
30-25 
00 
•04 
2905 
•05 
3801 
> *77 
•06 
4697 
•09 
7833 
8811 
•10 
8281 
•13 
8729 
•19 
9177 
9625 
TT : C : : 61 : 15. 
30-25 
•76 
8420 
■j A crack showed the boundaries of 
l tension and compression. 
30-25 
1-01 
Q* 
CO 
cr> 
fH 
30-25 
1-00 
•05 
13833 
•08 
15849 
•10 
16857 
•19 
17865 
18369 
30-25 
1-02 
•05 
17795 
•06 
18915 
•10 
20035 
>1-01 
•13 
•16 
21155 
21715 
> 
21844 
20310 
f Cracked neutral line. 
(_ T : C : : 64 : 39. 
30-25 
1-00 
•05 
14841 
•06 
15849 
•07 
16857 
•07 
17865 
•08 
18873 
•10 
19881 
•13 
20889 
21897 J 

f : C : : 65 : 35. 
3 k 2 
