A contractor wants to investigate using a 6S blade on the D6H dozer. The material is a dry, non cohesive silty sand, and is to be moved a distance of 200 ft from the beginning of the cut. The dozing is uphill on a 2% grade. The operator will have average skill, the dozer has a power-shift transmission, and both

visibility and traction are assumed to be satisfactory. The material weighs 110 pcfin the bank state. Job efficiency IS assumed to be equivalent to a 50-min hour. Calculate the direct cost of the proposed earthmoving operation in dollars per bcy. Assume that the 0&0 cost for the dozer is $54.00 per hour and the operator's wage is $12.00 per hour plus 35% for fringes, worker's compensation, and so on. ($. 900 per key)

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