2.2.2. Chain Loading

Try these first

1. 1.

   What does ADBT stand for in the cycle time equation?

   Hint

   Think about what happens when a vehicle speeds up or slows down.

2. 2.

   What is the primary reason for maintaining haul routes?

   Hint

   Consider what factors might slow down a vehicle.

3. 3.

   What defines the variable components of cycle time?

   • Depends on site speed
   • Does not change with distance
   • Includes dumping time

   Hint

   Think about how distance affects time taken.

4. 4.

   True or False: Pushing scrapers to maximum load always increases efficiency.

   • True
   • False

   Hint

   Remember the loading growth curve discussed.

5. 5.

   Analyze a loading curve where initially the load is increased but the loading rate decreases after reaching 85%. How would this affect operational costs?

   Hint

   Think about the efficiency each loading can provide.

6. 6.

   A project manager reports that the haul route is poorly maintained. Calculate the potential impact on cycle time for a project with 10 scrapers working. Assume each scraper experiences a slowdown of 20%.

   Hint

   Quantify the impact based on a standard cycle time.