DUST PREVENTION £&& ROAD PRESERVATION, 1915. 
23 
PRICES OF LABOR AND MATERIALS. 
The above cost data are based upon the following unit costs for 
labor and for materials (f. o. b. nearest siding) : 
Common labor, per day, $1 to $2. 
Skilled labor, per day, $2.50 to $3. 
Teams, per day, $4 to $4.50. 
Foremen, per day, $2 to $2.50. 
Carpenters, per day, $2.25 to $4.50. 
Rollermen, per month, $65 to $75. 
Mixing-plant engineer, per month, $80. 
Motor-truck drivers, per month, $100. 
Steam shovel engineer, per month, $150. 
Foremen, per month, $75 to $150. 
Timekeeper, per month, $80. 
Superintendent, per month, $150. 
Sandstone, all sizes, per ton, $1.37. 
Gneiss, 1^-inch, per ton, $1.21. 
Gneiss, f-inch, per ton, $1.25. 
Gneiss chips, per ton, $1.85. 
Trap, 1^-inch, per ton, $1.25. 
Trap, f-inch, per ton, $1.45. 
Trap chips, per ton, $1.85. 
Granite, all sizes, per ton, $1.43. 
Gravel, pit-run, per ton, $0.06f . 
Gravel, pea, per ton, $1.11. 
Asphalt A, per gallon, $0,123 and $0,127. 
Additional items of depreciation, repairs, interest, and rental on equipment: 
Steam shovel $735. 00 
Industrial railway equipment 200. 00 
Pile driver 50. 00 
Mixing plant '. 651. 21 
Penetration equipment 208. 00 
Rollers 750. 00 
Wagons 105. 00 
Plows, scarifier, hand tools, scales 421. 50 
Table 23 gives the results of a traffic census taken before and after 
improvement of the road. 
Table 23. — Volume and character of traffic on Mount Vernon Avenue at Mount Ida. 
Asphalt B, per gallon, $0,127. 
Asphalt X. per gallon, $0.65. 
Asphalt Y, per gallon, $0,059. 
Refined tar, per gallon, $0,100. 
Cement, per barrel, $1.65. 
Washed gravel, per ton, $0.95. 
Sand, per ton, $0.83. 
Lumber, per thousand, $17 to $26. 
Reinforcing steel, per pound, $0.02. 
Coal, per ton, $3.75 to $4.25. 
Wood, fuel, slabs, per load, $1. 
Cast-iron pipe, 10-inch, per foot, $0.75. 
Cast-iron pipe, 12-inch, per foot, $0.85 
and $0.88. 
Cast-iron pipe, 16-inch, per foot, $1.16. 
Cast-iron pipe, 18-inch, per foot $1.58. 
Corrugated-metal pipe, 15-inch, per 
foot, $0.66f , $0.67, $0.99^, and $1.00. 
Corrugated metal pipe, 18-inch, per 
foot, $0.65, $0.78i, and $1.15. 
Corrugated metal pipe, 24-inch, per 
Average before 
improvement. 1 
Average after 
improvement. 2 
North. 
South. 
North. 
South. 
1 
8 
3 
5 
8 


6 


4 
3 


20 
3 
1 
10 
2 
10 
5 


7 


2 
3 


20 
3 
1 
12 

4 
1 


3 



2 

9 
83 
9 

12 
a 

3 
3 
4 
2 
5 

6 

7 
3 
8 

<) 

10 

11 
2 
1? 

13 
9 
14 
81 
15 
6 
lfi 

Average of 8 days in March and 7 days in June, 1915. 2 Average of 7 days in December, 1915. 
