A 198 hp (power-shift) dozer is used in a pushing operation. The dozer is equipped with a straight blade. The material (dry and noncohesive) weighs 97 pcf in the bank state. It is estimated the material will swell 6%, from bank to loose state. The center-of mass–to–center-of-mass pushing distance is 200 ft. Job efficiency can be assumed to be equivalent to a 50-min hour. Calculate the production in bcy per hour and the direct cost of the proposed earthmoving operation in dollars per bcy. The company’s normal O&O cost for these machines is $135 per hour and the operator’s wage is $50.00 per hour plus 36% for fringes, insurance, and worker’s compensation.
A 198 hp (power-shift) dozer is used in a pushing operation. The dozer is equipped with a straight blade. The material (dry and noncohesive) weighs 97 pcf in the bank state. It is estimated the material will swell 6%, from bank to loose state. The center-of mass–to–center-of-mass pushing distance is 200 ft. Job efficiency can be assumed to be equivalent to a 50-min hour.
Calculate the production in bcy per hour and the direct cost of the proposed earthmoving operation in dollars per bcy. The company’s normal O&O cost for these machines is $135 per hour and the operator’s wage is $50.00 per hour plus 36% for fringes, insurance, and worker’s compensation.
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