28 
BULLETIN 586, U. S. DEPARTMENT OF AGRICULTURE. 
The pipe used was all 24 inches in diameter and made of 14 gauge 
(U. S. standard) metal. Both galvanized and ungalvanized sheets 
were used. The culvert structures are all provided with concrete 
head walls and include from one to four lines of pipe. Table 32 gives 
the number, location, and a brief description for each culvert. In all 
cases the structure numbers are indented in the tops of the head walls. 
The engineer's stationing, used in fixing the locations, is as follows: 
In Hays County. — Station numbers increase southward from 1,357 
at the Blanco Kiver to station 1986, Hays-Comal County line. In 
Comal County the station numbers decrease southward from 539 + 16 
( = station 1986, Hays County survey), at the Hays-Comal County 
fine to at the north city limits of New Braunf els, and increase south- 
ward from 539 + 16 at the south city limits of New Braunf els to 1045 + 
27 at the Comal-Guadalupe County line. 
Tables 33 and 34 show the results of laboratory analyses of samples 
taken from the galvanized and ungalvanized pipe, respectively. The 
samples in all cases were 4-inch by 6-inch rectangles, and were cut 
before the pipes were placed. 
Table 35 records the condition of the various pipes when inspected 
in March, 1917. 
Table No 
. 32. — Locations of 
experimental culverts, Texas post road. 
Landmarks and culvert 
No. 
Station No. 
Number 
lines of 
pipe. 
Description of culverts or landmarks. 
Havs County 
1357 
1419 
1457+50 
1515 
/ 1584 
\ 1675 
1748+70 
1765+35 
/ 1986 
\ 539+16 
508 
476+10 
466+60 
393+85 
355+00 
168 
112+50 
/ ° 
\ 539+16 
716 
726 
777 
791 
815 
937 
1012 
1018 
1045+27 
Smith bank of Blanco "River. 
No. 62 
1 
1 
1 
Ungalvanized Bessemer steel. 
No. 65 
Galvanized Bessemer steel. 
No. 68 
Do. 
North citv limits, San Marcos River. 
San Marcos 
No. 74 
1 
1 
Galvanized open-hearth steel. 
Ungalvanized Bessemer steel. 
No. 75 
Havs Countv survey. 
County line 
Comal County survey. 
No. 94. I. &G.N.R.R. 
crossing, 
No. 97 
1 
1 
1 
1 
1 
4 
2 
Galvanized copper-bearing open-hearth steel. 
Ungalvanized copper-bearing iron. 
No. 98 
Ungalvanized copper-bearing steel. 
No. 101 
Galvanized copper-bearing steel. 
No. 103. Under con- 
crete crossing, 
No. 109 
Ungalvanized ingot iron. 
[North, galvanized Bessemer steel. 
I North center, ungalvanized open-hearth steel. 
I South center, galvanized open-hearth steel. 
ISouth, ungalvanized Bessemer steel. 
/North, galvanized open-hearth steel. 
\South, ungalvanized open-hearth steel. 
North citv limits, Guadalupe River. 
No. 110 
Sooth cifv limits. 
No. 127 
2 
2 
2 
l" 
4 
1 
2 
fNorth, galvanized ingot iron. 
\ South, galvanized copper-bearing iron. 
/North, ungalvanized copper-bearing iron. 
\South, galvanized copper-bearing iron. 
/North, ungalvanized open-hearth steel. 
1 South, ungalvanized copper-bearing open-hearth steel. 
M. K. & T. R.R. 
Galvanized ingot iron. 
No. 128 
No. 131 
Railroad crossing 
No. 134 
No. 143 
[North, galvanized copper-bearing open-hearth steel. 
J North center, galvanized copper-bearing iron. 
1 South center, ungalvanized copper-bearing iron. 
1 South, ungalvanized copper-bearing open-hearth steel 
Ungalvanized ingot iron. 
No. 148 
No. 149 
fN ofth, galvanized ingot iron. 
(South, ungalvanized ingot iron. 
Comal, Guadalupe Counties. 
