Cement and Concrete Fence Posts. 3f 
TAB LE NO. 12—Poured Posts. 
These posts were made in special sheet iron lined wood molds put out 
by a certain manufacturer. The reinforcement recommended for these 
posts is a special trussed tube, which! is sold by the manufacturer at 15 
cents each at the factory. The results of the test on three posts in which 
this truss was used is shown below in connection with other similar posts 
with wire reinforcement. Size of post, 3y 2 x4y 2 inches at base, tapering to 
3V2x3y 2 inches at the top. Length, 6 feet 6 inches. Cured weight, 80 
pounds. Mixture, 1 part cement and 3 parts sand, by measure. Cost of 
cement per post, 18 pounds, 10.8 cents. Sand, % cubic foot, 2.5 cents. 
For cost of reinforcement, see table below. 
REINFORCEMENT 
TEST 
COST 
REMARKS 
Kind of Wire 
Weight 
Per Post 
L,bs. 
Cost 
Per 
Post 
First 
Crack 
in I y bs. 
Final 
Break 
in L,bs. 
Eocation of 
Break Above 
or Below 
Ground pine 
Cost of 
Material 
in Post 
New Wire is Fig¬ 
ured at 4c per 
Eb. and Old Wire 
at 2c per L,b. 
Special Com¬ 
mercial 
Trussed Tube 
3, 6-oz. 
15.0c 
105 
150 
Ground line 
Ground line 
Ground line 
28.3c 
In every case trus¬ 
sed tube bent caus¬ 
ed post to crack. 
4 long strands 
new barbed 
wire - - — - 
1% 
6.6c 
130 
137 
Ground line 
Ground line 
Ground line 
19.9c 
Wires broke. 
Wires poorly plac¬ 
ed in one post. 
4 long strands 
3 twisted No; 
14 wires- 
1 2 A 
6.6c 
75 
107 
1 in. below 
1 in. below 
Ground line 
19.9c 
Wires broke, 
Wires poorly plac¬ 
ed in one post. 
4 strands of 2 
wires twisted 
No. 10_ 
2K 
10.0c 
110 
160 
3 in. below 
Ground line 
2 in. below 
23.3c 
One wire broke 
in each post. 
Figure 9. 
A 7-inch corner post braced with a 2-inch gas pipe 14 feet long; 5-imh 
brace post. The exact number of pounds of pull exerted by each of the 
two fences is recorded by the dynamometer shown under the arrow. 
