DUST PREVENTION AND ROAD PRESERVATION, 1916. 
29 
Table No. 33. — Tests on galvanized metal used in experimental corrugated culverts on 
Texas post road. 
Struc- 
ture 
No. 
Spelter 
per 
square 
foot of 
metal. 
Analysis of base metal. 
Metal. 
Car- 
bon. 
Sul- 
phur. 
Phos- 
phorus. 
Man- 
ganese. 
Cop- 
per. 
Sili- 
con. 
Galvanized Bessemer steel 
109 
65 
68 
109 
110 
74 
94 
101 
143 
127 
128 
143 
127 
134 
149 
Ounces. 
2.97 
2.59 
2.80 
2.74 
2.58 
2.84 
2.48 
2.59 
2.48 
1.90 
1.86 
2.02 
2.44 
2.41 
2.50 
Per ct. 
0.11 
.09 
.10 
.09 
.10 
.09 
.07 
.07 
.08 
.04 
.05 
.04 
.04 
.03 
.03 
Per ct. 
0.052 
.047 
.053 
.043 
.049 
.037 
.033 
.036 
.048 
.039 
.040 
.034 
.044 
.035 
.045 
Per ct. 
0.098 
.107 
.104 
.013 
.017 
.037 
.0095 
.0095 
.0095 
.012 
.0095 
.0074 
.0063 
.0074 
.0063 
Per ct. 
0.34 
.36 
.37 
.41 
.40 
.39 
.32 
.41 
.42 
.056 
.056 
.050 
.019 
.050 
.019 
Per ct. 
0.00 
.004 
.002 
Trace. 
.008 
.003 
.12 
.20 
.22 
.12 
.13 
.12 
.06 
.04 
Trace. 
Per ct. 
0.005 
Do 
Do 
Do 
Do 
Galvanized copper-bearing steel . . 
Do 
Do 
Galvanized copper-bearing iron 
Do 
Do 
Do 
Do 
Table No. 34.- 
Tests on ungalvanized metal used in experimental corrugated culverts on 
Texas post road. 
Struc- 
ture No. 
Analysis of metal. 
Metal. 
Carbon. 
Sulphur. 
Phos- 
phorus. 
Man- 
ganese. 
Copper. 
Silicon. 
109 
62 
75 
109 
110 
131 
98 
131 
143 
97 
128 
143 
103 
148 
149 
Per cent. 
0.12 
.10 
.10 
.09 
.08 
.08 
.07 
.09 
.08 
.04 
.05 
.04 
.02 
.03 
.03 
Per cent. 
0.057 
.045 
.049 
.042 
.040 
.048 
.032 
.057 
.057 
.036 
.040 
.035 
.022 
.032 
.027 
Per cent. 
0.097 
.099 
.096 
.014 
.017 
.012 
.0084 
.013 
.012 
.0084 
.0095 
.012 
.0053 
.0074 
.0053 
Per cent. 
0.34 
.37 
.37 
.36 
.26 
.38 
.32 
.43 
.43 
.043 
.056 
.019 
.028 
.028 
.028 
Per cent. 
0.000 
.004 
.004 
Trace. 
.004 
.04 
.22 
.13 
.22 
.12 
.12 
.12 
.006 
.016 
.012 
Per cent. 
Do 
Do 
Open-hearth steel 
0.005 
Do 
Do 
Copper-bearing steel 
.015 
Do 
Do 
.01 
Do 
Do 
Ingot iron 
.00 
Do 
Do 
Table 35. — Condition Record March, 1917. 
Metal. 
Struc- 
ture No. 
Location. 
Position. 
Condition, March, 1917. 
Galvanized Bessemer steel 
109 
65 
68 
109 
110 
74 
94 
101 
143 
127 
128 
143 
127 
134 
149 
Station. 
168+00 
1457+50 
1515 
168+00 
112+50 
1748+70 
508 
393+85 
937+00 
716+00 
726+00 
937+00 
716+00 
815+00 
1018+00 
North 
In apparently new condition. 
No deterioration of spelter, 
and entire absence of scale or 
rust. 
Do. 
Do 
Do.... 
Do. 
Galvanized open-hearth steel 
Do 
South center . . 
North. . 
Do. 
Do. 
Do 
Do. 
Galvanized copper-bearing steel. . 
Do. 
Do 
Do. 
Do 
North .. 
Do. 
Galvanized copper-beraing iron... 
Do 
South 
Do. 
do 
North center . . 
North. . . 
Do. 
Do 
Do. 
Do. 
Do 
Do. 
Do 
North 
Do. 
