Costs.
During the work, careful records of the actual cost to the contractor of carrying out this work were kept by the Company's forces; these costs include all direct charges, such as labor and materials, and all indirect charges such as head office, plant depreciation, insurance, etc., but do not include the cost of any financing, of which the Company had no information.
TRANS. AM. SOC. CIV. ENGRS.
VOL. LXVIII, No. 1155.
HEWETT AND BROWN ON
PENNSYLVANIA R. R. TUNNELS: NORTH RIVER TUNNELS.
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TABLE 33.— Average Force per Shift for Transportation in Two Tunnels.
| Location | Grade | Rate | Work in Progress | ||
|---|---|---|---|---|---|
| Two inverts and two duct benches | Two arches, two inverts, and two duct benches | Four arches and one face of bench | |||
| Tunnel | Foreman | $3.00 | 2 | 2 | 2 |
| Laborer | 1.75 | 24 | 28 | 70 | |
| Switchmen | 2.00 | 2 | 2 | ||
| Hoisting engineers | 3.00 | 2 | 4 | 5 | |
| Surface | Foreman | 3.00 | 1 | 1 | 2 |
| Laborers | 1.75 | 8 | 8 | 15 | |
| Teams | 6.50 | 1 | 1 | 2 | |