Labor.—General foreman, $110 per month; assistant foreman, $75 per month; timekeeper, $60 per month; riveters, 35c per hour; blacksmith, 30c per hour; blacksmith assistant, 20c per hour; carpenters, 22½c and 25c per hour; enginemen, 25c per hour; firemen, 20c per hour; night watchman, 20c per hour; laborers, 17½c and 20c per hour; team (including driver), 40c per hour. The prices quoted for lumber, cement, limestone and sand are prices f. o. b., Louisiana, Iola, Kan., El Dorado, Kan., and Wichita, Kan.
The total and unit cost of constructing the concrete piers and abutments and of erecting the steel superstructure are given in the following tabulation. Altogether there was about 2,300 cu. yds. of concrete in the substructure, most of which, as stated above, was a 1-3-5 mixture.
| Machinery and Supplies. | |
| Concrete mixer, 20% of cost | $ 152.10 |
| Supplies, freight, hauling, setting up | 505.04 |
| ———— | |
| Total | $ 657.14 |
| Centrifugal sand pump, 20% of cost | $ 27.00 |
| Supplies, freight, hauling, setting up | 277.50 |
| Rent of traction engine to operate | 83.25 |
| ———— | |
| Total | $ 387.75 |
| Water pump and pipe, 20% of cost | $ 29.00 |
| Supplies, freight, hauling, setting up | 177.32 |
| ———— | |
| Total | $ 206.32 |
| Pile driver engine, 20% of cost | $ 100.00 |
| Supplies, freight, hauling, setting up | 243.65 |
| ———— | |
| Total | $ 343.65 |
| ———— | |
| Grand total | $1,594.86 |
| Cofferdams. | |
| Materials, lumber and nails | $1,285.26 |
| Freight and train haul | 306.33 |
| Labor making piles | 696.82 |
| Labor driving piles | 1,384.05 |
| ———— | |
| Total | $3,672.46 |
The sheet piling took 63,500 ft. B. M. of lumber; the cost per 1,000 ft. B. M. for the sheet piling was then:
| Materials, lumber and nails | $ 20.08 |
| Freight and haulage | 4.82 |
| Labor making piles | 10.97 |
| Labor driving piles | 21.80 |
| ———— | |
| Total | $ 57.67 |
| Forms, Platforms and Runways. | |
| Lumber, hardware, etc. | $224.59 |
| Freight and train haul. | 40.20 |
| Labor making, removing and placing. | 556.51 |
| ———— | |
| Total | $821.30 |
| Concrete Materials. | |
| Cement, freight, unloading and storing. | $4,617.48 |
| Sand, freight, unloading, etc. | 1,336.05 |
| Broken stone, freight, unloading, etc. | 2,026.92 |
| ———— | |
| Total | $7,980.45 |
This gives us for 2,300 cu. yds. of concrete a cost of $3.47 per cu. yd. for materials, including freight, storage, and unloading charges of all kinds. A line on the proportion of the cost contributed by these latter items may be got by taking the prices of the materials f. o. b. at the places of production and assuming the proportions for a 1-3-5 concrete. According to tables in Chapter II, a 1-3-5 broken stone concrete requires per cubic yard 1.13 bbls. cement, 0.48 cu. yd. sand and 0.80 cu. yd. broken stone. We have then:
| 1.13 bbls. cement, at $1.50 | $1.69 |
| 0.48 cu. yd. sand, at 20c | .10 |
| 0.80 cu. yd. stone, at 45c | .36 |
| —— | |
| Total | $2.15 |
This leaves a charge of $1.32 per cubic yard of concrete for freight and handling materials. The cost of mixing concrete and placing it in the forms was $3,490.87, or $1.52 per cu. yd. We have then:
| Cost of concrete materials per cu. yd. | $3.47 |
| Cost of mixing and placing concrete. | 1.52 |
| —— | |
| Total. | $4.99 |