5.4. Estimating Truck Production

Try these first

1. 1.

   What does gravimetric capacity mean?

   Hint

   Think about safety limits provided by manufacturers.

2. 2.

   How do you calculate loading time?

   Hint

   Remember the formula we discussed.

3. 3.

   What is the loading time calculated by?

   • Number of bucket loads multiplied by bucket cycle time
   • Total weight of the truck
   • Distance traveled

   Hint

   Think about how we determine the time to load a truck.

4. 4.

   True or False: Balancing the number of trucks with excavators is not important.

   • True
   • False

   Hint

   Consider why coordination between machines matter in construction.

5. 5.

   Calculate how many bucket loads are needed if a truck capacity is 12 m3 and bucket capacity is 2.5 m3 with a fill factor of 0.85. What lead to increased truck production?

   Hint

   Remember to adjust the capacities based on their fill factors.

6. 6.

   A loader operates on a job efficiency of 45 mins per hour. If a truck can carry 15 m3 and the loading cycle is 10 minutes, how many truckloads can they efficiently output in 1 hour?

   Hint

   Factor in job efficiency in timing calculations.