6.2. Material Categorization

Try these first

1. 1.

   What is the first step in an earthmoving operation?

   Hint

   Think about what needs to be done before digging.

2. 2.

   What does haul distance refer to?

   Hint

   Consider the entire path from cutting to dumping.

3. 3.

   What is the first step in earthmoving operations?

   • Hauling
   • Loosening
   • Digging

   Hint

   Remember the sequence of operations!

4. 4.

   Rolling resistance is influenced by what?

   • Haul distance
   • Material type
   • Road surface condition

   Hint

   Think about how surfaces affect machinery operation.

5. 5.

   Given that a bulldozer has a gross weight of 25 tons with a rolling resistance of 60 kg per ton, calculate the total tractive effort required for moving on a level surface.

   Hint

   Consider the weight and resistance factors.

6. 6.

   Discuss the implications of selecting a smaller piece of equipment for a large project where deep excavation is required, detailing operational efficiency.

   Hint

   Think about speed, costs, and project demands.