The operator of a rock quarry is invited to bid on furnishing 42,000 cy of crushed...

The operator of a rock quarry is invited to bid on furnishing 42,000 cy of crushed aggregate for a job. The aggregate will be delivered to the job, which is 27 miles from the quarry. The aggregate will be loaded into trucks by a loader that can load at a rate of 75 cy/hr. The trucks will haul 18 cy/load at an average speed of 50 mi./hr loaded and 55 mi./hr empty. The estimated time to dump a load is 5 min. Assume a 45 min. effective hour for the loading and hauling operation.

The cost information for the job is: Royalty paid for aggregate = $1.35/cy Overhead = $0.75/cy Profit = $1.20/cy Loader = $85.00/hr Operator = $32.00/hr Trucks, each = $55.00/hr Truck driver, each = $28.00/hr Foremen = $35.00/hr

a) How many trucks are required? b) What resource dictates project duration. c) What should be the bid price per cubic yard using the economic way to conduct the project?

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Ally Wells answered 5 months ago

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