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Which of the following equipment is a clamshell that is especially suited for lifting material vertically?

Construction cost estimates are based on the total quantity of the work to be performed multiplied by the ____________ of the work.

_____________________ is a term that is used to designate the tractive force between the tires of a machine’s driving wheels and the surface on which they travel.

A contractor has a project involving the construction of a small manufacturing plant. The contractor has selected a borrow site and has decided to use 27-cubic yard dump trucks to haul the needed fill material. The contractor has decided to use a hydraulic excavator with a shovel attachment to load the trucks. The excavator has expected productivity as 422cy/hr at 100% efficiency, and the truck cycle time excluding loading is 0.48hr. The job site operation efficiency is assumed as 0.8. Please answer the next two questions. What is the expected fleet production if only 6 trucks are available to the fleet?

Please match the following three methods of pushing loading scrapers with their corresponding diagrams?

Continue with the previous question, will this tractor slip on this surface?

________ is a reduction in density due to loosening the soil by digging.

Which of the following factors need to be considered when selecting a proper scraper for your project?

A contractor plans to excavate 4,000 bank cubic yards from a site. He needs to have 1,000 compacted cubic yards for the backfill of excavations. The soil test shows that the soil has a bank density of 2,500 pounds per cubic yard, a loose density of 2,000 pounds per cubic yard, and a compacted density of 3,000 pounds per cubic yard. He plans to use a truck that can haul 25 loose cubic yard per load. How many full truckloads of loose excess material should be hauled off the site?

The three basic components of soil are ______, ________, and __________.