5. Cycle Time Calculations

Try these first

1. 1.

   Define the term 'Swell Factor'.

   Hint

   Think of how material volume changes when excavated.

2. 2.

   What does cycle time encompass?

   Hint

   Consider all parts of a task completion for a machine.

3. 3.

   What is the swell factor used for?

   • A) To calculate energy consumption
   • B) To measure material volume change
   • C) To determine hauling distance

   Hint

   Recall its definition and purpose.

4. 4.

   True or False: Cycle time includes only the loading and dumping time.

   • True
   • False

   Hint

   Remember what we discussed about the full operation time.

5. 5.

   A project requires moving 1000 m³ of earth with a swell factor of 0.9. Calculate the bank volume needed.

   Hint

   Remember to convert loose to bank using the swell factor.

6. 6.

   You have a scraper with a cycle time of 6 minutes and a pusher cycle time of 1.5 minutes. How many scrapers can one pusher sustain? Calculate and reflect on the operational impacts of this ratio.

   Hint

   Use the balance formula for your calculations.