DUST PREVENTION AND ROAD PRESERVATION, 1916. 
Table 16. — Total costs. 
13 
Experiment No. 
Stone on 
siding. 
Unload- 
ing stone. 
Hauling 
stone. 
Spread- 
ing stone. 
Chips on 
siding. 
Unload- 
ing chips. 
Hauling 
chips. 
Spread- 
ing chips. 
2!!!!!"!"""!!!!!"!! 
8453. 92 
513. 75 
529. 00 
510. 93 
104.36 
104.36 
36.77 
$75.25 
85.18 
87.72 
84.72 
3.70 
3.70 
24.30 
$31.94 
72.36 
111.78 
131.15 
33.45 
33.45 
52. 94 
$25. 96 
29.39 
30.26 
29.23 
6.18 
6.68 
27.43 
$115. 61 
130. 85 
134. 74 
130. 14 
14.37 
28.77 
1 26. 10 
$20. 75 
23.48 
24.18 
23.35 
3.00 
1.65 
16.00 
$8.81 
19.95 
30.81 
36. 16 
15.20 
8.62 
111.50 
$11.92 
13.50 
3. . 
13.90 
4 
13.42 
5 
6 
3.10 
2.60 
7 and 8 
12.24 
Total 
2,253.09 
364.57 
467.07 
155. 13 
580. 58 
102.41 
131.05 
60.68 
Add sand. 
Bitumen 
on 
siding. 
Hauling 
bitumen. 
Loading 
and 
heating. 
Apply- 
ing 
bitumen. 
Rolling 
Experiment No. 
Penetra- 
tion 
stone. 
Penetra- 
tion and 
seal coat. 
Total. 
1 
$502.58 
585.96 
521.44 
530.05 
148.34 
167.07 
87.73 
$18.79 
21.25 
21.89 
21.14 
5.87 
5.93 
5.87 
$18.90 
21.36 
22.01 
21.25 
5.91 
5.96 
5.91 
$29. 45 
33.31 
34.28 
33.10 
9.20 
9.29 
9.20 
$9.24 
10.46 
10.76 
10.40 
4.20 
4.20 
2.72 
$2.54 
2.88 
2.97 
2.86 
.54 
.66 
1.25 
$1,325.66 
1,563.68 
1,575.74 
1,577.90 
357 42 
2 
3 
4 
5 
6 
382.94 
299.96 
7 and 8 
Total 
2,543.17 
100. 74 
101.30 
157.83 
51.98 
13.70 
7,083.30 
Prices of Labor and Materials. 
The above cost data are based upon the following unit costs for 
labor and materials (f . o. b. nearest siding) : 
Residual asphaltic petroleum, per gallon, 
$0,097. 
Common labor, per day, $1.50 to $1.75. 
Skilled labor, per day, $1.75 to $2.25. 
Teams, per day, $4.00 to $4.50. 
Foreman, per day, $2.25 to $4.00. 
Carpenters, per day, $2.50 to $5.00. 
Roller man, per month, $65.00 to $70.00. 
Superintendent, per month, $125.00. 
Trap rock, f. o. b. siding: 
1£ inch, per ton, $1.40. 
Chips, per ton, $1.65. 
Gravel, pit-run, per ton, $0,067. 
Gravel, pea, per cubic yard, $1.50. 
Tar, per gallon, $0.0805. 
Oil asphalt exp. Nos. 2 and 4, per gallon, 
$0.0825. 
Additional items of depreciation, repair, interest and rental on 
equipment, etc.: 
Oil asphalt exp. No. 6, per gallon, $0,085. 
Cement, per barrel, $1.65. 
Washed gravel (concrete), per ton, $0.75. 
Sand, per ton, $0.55. 
Lumber, per M, $25.00. 
Reinforcing steel, per pound, $0.03. 
Coal, per ton, delivered, $4.00 to $5.00. 
Cast iron pipe, 16-inch, per foot, $1.35. 
Corrugated metal pipe: 
15-inch, per foot, $0.67. 
18-inch, per foot, $0. 783. 
Penetration equipment, $300. 00. 
Roller, $250. 00. 
Wagons, $50. 00. 
Plows, small tools, $70.00. 
Bond, insurance, superintendence, trans- 
portation and travel, general office, 
$790. 00. 
