Problem 11-4 A heavy construction firm has been awarded a contract to build a large concrete dam. It is expected that a total of 8 years will be required to complete the work. The firm will buy $600,000 worth of special equipment for the job. The salvage value of the special equipment is $60,000. The equipment utilization in year one to eight are 6000, 4000, 4000, 1600, 800, 800, 2200, and 2200 hours per year, respectively. Compute the depreciation schedules using unit-of- production and modified accelerated cost recovery system methods