Question

A project involves excavation of a 200 ft by 200 ft raft foundation to a depth...

A project involves excavation of a 200 ft by 200 ft raft foundation to a depth of 5 ft, with the earth to be transported up to 40 yards from the edge within 14 days.

Estimate the total cost for excavation considering Manual operation and the following;
Man hours/unit: 0.05 hours/unit

Assume 8 hour/day of work

Cost of labor/day: $120

1.(b) How many workers do you need to complete work in 14 days?


Estimate the total cost for excavation considering Mechanical Operations with 1 excavator and 2 tippers and the following;
2 operators per excavator and 2 operators per truck

Productivity of equipment: 900 ft3/hour

Assume 8 hour/day of work

Cost of excavator/day: $2000

Cost of tipper/day: $900

Cost of labor/day: $200

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