Cement and Concrete Fence Posts. 15 
TABLE NO. 4.—Poured Posts.* 
Size, 4x4 inches at base, tapering to 3x3 inches at top. Length, G 
feet 6 inches. Cured weight, 80 pounds. 
COST OF MATERIAL, AND FINAI, BREAK 
REINFORCEMENT 
Mixture, 1 part ce¬ 
ment and 3 parts 
sand. 
Mixture, 1 part ce¬ 
ment and 4 pans 
sand. 
Kind of Wire 
Weight per 
post in lbs- 
Cost 
per Post 
Cost 
of Material 
in Post 
Pounds to 
break post 
Cost 
of Material 
in Post 
Pounds to 
break post 
No. 10, 4 twisted 
strands of 2 wires 
2H 
10.0c 
23.3c 
183 
20.6c 
168 
Old barbed, 4 long 
strands 
1% 
3.3c 
16.6c 
108 
13.9c 
65 
New barbed, 4 long 
strands 
1% 
6.6c 
19.9c 
105 
17.2c 
88 
No. 14, 4 strands of 3 
twisted 
1% 
6.6c 
19.9c 
102 
17.2c 
62 
No. 14, 4 long and 2 
short strands of 3 
twisted 
2 
8.0c 
21.3c 
185 
* This table is a summary of Tables 6 and 8, Bulletin 148, Colo. Exp. 
Sta. 
The Three Cornered Post .—The following conclusions are 
drawn after testing 23 triangular posts. Size, 7 inches on 
each side at the bottom, tapering to 5 inches on each side at the 
top. Mixture, 1 part cement and 3 parts sand, by measure. Cost 
of material varying from 14 cents to 19 cents each. 
The three cornered post which is advocated to some extent, 
does not have as many points in its favor as it may seem. In the 
first place an equal amount of reinforcement in each corner of the 
post cannot make a post of equal strength from two opposite direc¬ 
tions. If a force is brought to bear against one of the flat sides 
of the post towards the opposite corner, the material in the corner 
will crush long before the wires will break on the side from which 
the force is exerted. On the other hand, if a force is brought to 
bear against one corner of the post towards the opposite flat side, 
the single reinforcement in the corner will break before the mixture 
has begun to crush on the flat side. 
An extra reinforcement in the corner on which the force is 
exerted towards the opposite flat side will make it practically as 
strong as the flat side. But when the force is again applied to the 
flat side towards the single corner which is doubly reinforced, the 
mixture in the corner gives away too soon and it is no better than 
with but a single reinforcement. 
