Acat d7g dozer is used in a push operation. the material (dry and non cohesive) weights 87 pcf in the bank state. it is estimated that the material will swell 5% from a bank state. the center of mass to center of mass pushing distance is 250 ft. job efficiency is estimated to be at a 50-min hour. the o& o cost for the dozer is $86 per hour and the operator's wage is $17.50 per hour plus 44% for fringes, insurance and worker's compensation. calculate the production in bcy per hour and the direct cost of the proposed earthmoving operation.