12.

A Contractor is using a wheeled loader with the bucket size of 2.5 CY to carry the moist loam. The density of moist loam is 2,250 lb/LCY, and the fill factor is 1.05. The static tipping load of the loader is 16,000 lb. The fixed travel time is 0.8 min. The average speed for hauling and return is 3 mph and 6 mph, respectively. The travel distance is 350 ft. The operation efficiency is 45 min/hour. The contractor estimates hourly cost for the wheeled loader; the ownership cost is $26/hour, the operating cost is $30/hour, and the operator wage is $35/hour. 1. What is the maximum capacity per cycle? 2. What is the loader's productivity? 3. What is the estimated unit cost in $/LCY of the loader to work on the job