DUST PREVENTION AND ROAD PRESERVATION, 1916. 
13 
TasBLE 16.—Total costs. 
. Stone on | Unload- | Hauling | Spread- | Chips on | Unload- | Hauling | Spread- 
Experiment No. siding. jing stone.| stone. jing stone.) siding. jing chips.| chips. |ing chips. 
ee ee aetna ues $453. 92 $75.25 $31. 94 $25.96 | $115.61 $20. 75 $8. 81 $11. 92 
Fee asec ya sptee ie ESR 518. 7. 85.18 72.36 29.39 130. 85 23.48 19.95 13.50 
Sees ase raisetese esses 529. 00 87.72 111.78 30. 26 134. 74 24.18 30. 81 13. 90 
(i Tale ay ge 510. 93 84.72 131.15 29.23 130. 14 23.35 36.16 13. 42 
Gi en a Coe Ue a 104. 36 3.70 33.45 6.18 14.37 3.00 15.20 3.10 
OD hoe estate eee 104. 36 3.70 33.45 6. 68 28.77 1.65 8. 62 2.60 
(PENG Hegel ee eae 36.77 24.30 52. 94 27.43 1 26.10 16.00 111.50 12.24 
Total 2,253.09 | 364.57 | 467.07 | 155.13 | 580.58 | 102.41} 131.05 60. 68 
1 Add sand. 
Rolling 
Bitumen . Loading | Apply- 
. Hauling x 
Experiment No. on bi and ing Total. 
. itumen. . a Penetra- | Penetra- 
siding. heating. | bitumen. tion Asai GHG 
stone. | seal coat. 
ee eae eaics sccm ees ansiscccies. $502. 58 $18.79 $18.90 $29. 45 $9. 24 $2.54 | $1,325.66 
PD ee ae eels nie oe iss Gemini oweree 585. 96 21.25 21.36 33.31 10. 46 2.88 | 1,563.68 
eee ee seer ee eae isis cinco oe 521.44 21.89 22.01 34.28 10.76 2.97 1,575.74 
Aree eee a tL Ease esse tec 530.05 21.14 21.25 33.10 10. 40 2.86 | 1,577.90 
rr a oiciniaiors ieisecias isa siciaie 148.34 5.87 5.91 9. 20 4.20 -54 357. 42 
Gaya sae te ce ease - Deka: 167.07 5.93 5.96 9.29 4.20 - 66 382.94 
MANO Setar ts sae Sate ee s <.-e desire 87.73 5.87 5.91 9.20 2.72 1.25 299.96 
otal yo eeie kc aet2 42 2,543.17 100. 74 101.30 157.83 51.98 13.70 | 7,083.30 
Prices or Lasor AND MATERIALS. 
The above cost data are based 
upon the following unit costs for 
labor and materials (f. 0. b. nearest siding): 
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: 
14 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. 
Residual asphaltic petroleum, per gallon, 
$0.097. 
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. 
Additional items of depreciation, repair, interest and rental on 
equipment, etc.: 
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. 
