3. Need for Earthmoving

Try these first

1. 1.

   What is earthmoving?

   Hint

   Think about preparations for construction.

2. 2.

   List two basic steps of earthmoving operations.

   Hint

   Consider the sequence of tasks involved.

3. 3.

   What is the primary purpose of earthmoving operations?

   • To make soil corrections
   • To move earth material
   • To install pipelines

   Hint

   Think about construction site preparations.

4. 4.

   True or False: Rolling resistance increases with poorly maintained haul routes.

   • True
   • False

   Hint

   Consider what maintenance does to performance.

5. 5.

   A site requires excavating 1500 cubic meters of sand. If a scraper can move 75 cubic meters per trip and the haul distance is 300 meters, how many trips are needed to complete the excavation?

   Hint

   Think about how you would divide the total by the amount per trip.

6. 6.

   A bulldozer experiences a rolling resistance of 35 kg per ton. If it has a total weight of 15 tons, calculate the tractive effort required to maintain movement on a level surface.

   Hint

   Use the formula for calculating force based on weight and resistance.