Using the scenario provided calculate how many trucks would you need to complete this excavation? How many hours will the excavator be operating for?

Excavation and Backfill BONUS Activity 4(%)

Given the following quantities, complete a cost estimate for the following excavation and backfill project:

Excavation Total 197 cubic yards

Backfill Total 70 cubic yards

Based on the number of cubic yards of material provided, answer the following questions:

An excavator takes ten minutes to load a truck with 12 cubic yards of material.

How many truck loads of material is there?

A truck takes 50 minutes to go and dump the load and return for another load. How many trucks would you need to complete this excavation? (Remember you cannot have ½ a truck, it’s either present or not).

How many hours will the excavator be operating for?

Building on your previous questions, a grade-person will need to be checking the excavation depth as the excavator operator is digging.

How many hours will you need to have this person on-site for?

There is a $500 charge for delivery and pick-up of heavy equipment. 15 minutes is needed for unloading and loading the equipment.

It is not uncommon for minimum times to be enforced when renting equipment of hiring staff. On this project, assume a 4 hour minimum charge for equipment and personal (excavator and operator and grade-person).

Trucking cost is $85.00 per hour per truck.

The excavator and operator cost is $350.00 per hour with a minimum of 4 hours.

The grade-person costs $45.00 per hour with a minimum of 4 hours.

How much would the total excavation cost?

Using the scenario provided calculate how many trucks would you need to complete this excavation? How many hours will the excavator be operating for?