2. Introduction to Earthmoving Operations

Try these first

1. 1.

   What is the first step of the earthmoving process?

   Hint

   Think about what you need to do before digging.

2. 2.

   Name one type of equipment used for earthmoving.

   Hint

   Consider large machines that move earth.

3. 3.

   What is the relationship between rolling resistance and surface type?

   • It does not change
   • It varies based on surface type
   • It is always zero

   Hint

   Think about how tires behave on asphalt versus dirt.

4. 4.

   The required power is...

   • True
   • False

   Hint

   Recall the definitions discussed.

5. 5.

   A construction site requires moving a total of 40 tons of material over a distance of 800 meters. If the recommended machine has an economic haul distance of 600 meters, discuss the potential impacts of exceeding this distance. What would you suggest?

   Hint

   Think about how machinery operates over distances.

6. 6.

   Calculate the tractive effort needed if a machine weighing 12 tons experiences a rolling resistance of 60 kg per ton on a dirt road, and the wheel sinks 4 centimeters. What is the total tractive effort?

   Hint

   Remember to include both rolling and penetration resistances.