2.2. Cycle Time Comparison with Front Shovel

Try these first

1. 1.

   What is the ideal angle of swing for optimal shovel productivity?

   Hint

   Think about how the truck should be positioned relative to the excavator.

2. 2.

   Define cycle time.

   Hint

   Consider the steps involved when using a shovel.

3. 3.

   What should the ideal angle of swing be for optimal productivity?

   • 60 degrees
   • 90 degrees
   • 120 degrees

   Hint

   Think about the positioning of the truck.

4. 4.

   True or False: The height of cut directly influences the correction factor.

   • True
   • False

   Hint

   Consider why we use correction factors.

5. 5.

   A project has an excavator that can operate at a maximum height of 8 m. If optimizing for soft soil you choose 30% of that height, what is your optimum height?

   Hint

   Use the percentage of maximum height to determine optimums.

6. 6.

   A truck is positioned too close and causes the swing angle to be less than 90 degrees. Explain how this can ironically reduce productivity.

   Hint

   Consider how equipment operates in confined spaces.