1.A contractor is planning to use a crawler tractor with power shift transmission to push 1,500LCY. The tractor must haul the loose material down an 8% slope, where it will

be stockpiled for later removal. The contractor has measured the tractor blade load measurement: the pile length12.6 ft, the pile width 8.1 ft, and the pile height 4 ft. The tractor weighs 24,400 pounds, and the coefficient of traction is estimated to be 0.7. The average haul distance is estimated to be 300 ft.The job efficiency is 50 minutes per hour. Performance characteristics of the tractor are shown in the previous figure. (note: 1 mi/hr = 88 ft/min) 1) What is the estimated productivity of the tractor? 2) Estimate the total hours to complete the work. 3) Determine if the tractor can perform the work in the given condition above.