Total Expense of Hauling 128,420 Board Feet of Logs
| Investment: | |
| | Chassis | $4,900.00 |
| | Trailer | 700.00 |
| | Total Investment | $5,600.00 |
Variable Charges
| Gasoline, 284 gallons @ $.19 | $53.96 |
| Oil, 3 gallons @ $.60 | 1.80 |
| Oil, 201⁄2 gallons @ $.45 | 9.23 |
| Tires, $.071⁄2 per mile on 615 miles | 46.12 |
| Incidentals | 7.43 |
| | Total variable charges | $118.54 |
| Depreciation (based on 15% per annum on $5,600, less $560, the cost of the tires, or $5,040.00) | $1.34 | 9 |
| Interest on amortized value at 7% | .63 | |
| Storage, $5.00 a month | .20 | |
| Driver @ $4.00 a day | 4.00 | |
| | Total fixed charges | $6.17 | 9 |
| Total variable charges | $118.54 |
| Total fixed charges at $6.179 a day for 11 days | 67.97 |
| Total cost | $186.51 |
128,420 board feet of logs @ $186.51, or $1.44 per 1000 feet.
Following is a recapitulation of the work performed by a 5-ton logging truck, Jan. 20 to Jan. 31, 1916, inclusive. The logs were hauled from O’Neill’s Camp on the Bothell-Everett road 71⁄2 miles and dumped into Lake Washington at Bothell.
| Date | Trips | Mileage | No. Ft. Hauled | Gas Used | Oil Used |
| 1/20/16 | 4 | 60 | 10,768 | 30 | 2.25 |
| 1/21/16 | 4 | 60 | 11,888 | 24 | 2.25 |
| 1/22/16 | 4 | 60 | 11,707 | 30 | 2.25 |
| 1/23/16 | Did not haul. Roads in bad condition. |
| 1/24/16 | 4 | 60 | 8,894 | 34 | 2.25 |
| 1/25/16 | 2 | 30 | 5,200 | 16 | [2]1.00 |
| 1/26/16 | 4 | 60 | 16,174 | 29 | 2.25 |
| 1/27/16 | 4 | 60 | 11,276 | 25 | 2.25 |
| 1/28/16 | 4 | 60 | 15,514 | 26 | 2.25 |
| 1/29/16 | 4 | 60 | 15,511 | 31 | 2.25 |
| 1/30/16 | 3 | 45 | 9,152 | 20 | [3]2.25 |
| 1/31/16 | 4 | 60 | 12,336 | 19 | 2.25 |
| Total | 41 | 615 | 128,420 | 284 | 23.50 |