6.1. Balancing Number of Scrapers

Try these first

1. 1.

   What is a scraper used for?

   Hint

   Think about its primary function in construction.

2. 2.

   What does the swell factor signify?

   Hint

   Relates to how materials expand when disturbed.

3. 3.

   What does the swell factor represent?

   • Material density
   • Increase in volume
   • Weight of loose material

   Hint

   Think about the context of material handling.

4. 4.

   True or False: A pusher can only support a single scraper simultaneously.

   • True
   • False

   Hint

   Recall our discussions about machine operations.

5. 5.

   Given that a pusher's cycle time increases by 10% due to delays in loading, recalculate the number of scrapers needed if the original pusher's cycle time was 1.37 minutes.

   Hint

   Adjust the calculations considering the percentage increase.

6. 6.

   If the weight of material causes the swell factor to increase to 0.85, determine the new volume in bank cubic meters and analyze its impact on productivity.

   Hint

   Think of how increasing the swell factor reduces the bank volume.