8.2. Factors Affecting Rolling Resistance

Try these first

1. 1.

   What is rolling resistance?

   Hint

   Think about how wheels interact with different surfaces.

2. 2.

   Name one factor that affects rolling resistance.

   Hint

   Consider the characteristics of the surface.

3. 3.

   What is rolling resistance primarily influenced by?

   • Tire color
   • Surface type
   • Vehicle speed

   Hint

   Think about different surfaces encountered in construction.

4. 4.

   True or False: Rolling resistance is the same on soft and hard surfaces.

   • True
   • False

   Hint

   Recall the examples of surface types discussed.

5. 5.

   A construction vehicle with a gross weight of 40,000 kg moves on a mixed surface with rolling resistance factors of 50 kg per ton and sinks 5 centimeters into the surface. Calculate the total tractive effort required.

   Hint

   Ensure you separately calculate rolling resistance and penetration resistance.

6. 6.

   Discuss how reducing rolling resistance can affect overall project efficiency.

   Hint

   Consider both direct and indirect impacts on budgeting and scheduling.