6. Scraper Production Cycle

Try these first

1. 1.

   What is back-track loading?

   Hint

   Think about what the pusher does after loading the first scraper.

2. 2.

   What is the main advantage of chain loading?

   Hint

   Consider why this method is more efficient.

3. 3.

   Which loading method is the slowest?

   • Chain Loading
   • Back-Track Loading
   • Shuttle Loading

   Hint

   Consider the steps involved in each loading method.

4. 4.

   True or False: Chain loading allows the pusher to pull scrapers without returning.

   • True
   • False

   Hint

   Think about the efficiency of the process.

5. 5.

   You have two scrapers and one pusher. If the scraper cycle time is 2 minutes and the pusher cycle time is 1 minute, how many scrapers can effectively be served?

   Hint

   Think about how their times relate to efficiency.

6. 6.

   In an excavation project, a contractor wants to use back-track loading but realizes it might delay progress. If the average load time is 3 minutes and the return time is 2 minutes, what is the total cycle time?

   Hint

   Add the loading and returning times together.