5.2. Calculating Truck Cycle Time

Try these first

1. 1.

   Define gravimetric capacity in your own words.

   Hint

   Think about safety and manufacturer guidelines.

2. 2.

   How is loading time calculated?

   Hint

   Refer to the multiplication of two factors.

3. 3.

   What does the gravimetric capacity of a machine refer to?

   • The total weight capacity
   • The weight capacity as defined by the manufacturer
   • The speed of the machine

   Hint

   Think about safety limits and guidelines provided by manufacturers.

4. 4.

   True or False: Overloading a truck can lead to severe operational costs in terms of tire wear and machine integrity.

   • True
   • False

   Hint

   Consider what happens when machines are beyond their load limits.

5. 5.

   A truck can handle a gravimetric capacity of 25 tons. If wet sand, weighing 2.5 tons/m³, is used, calculate how much volume can the truck carry. What would the cycle time be if the loading takes 7 minutes and dumping takes another 3 minutes?

   Hint

   Break down the problem into weight and load capacity first.

6. 6.

   Given a truck with a loading time of 6 minutes and a cycle time of 30 minutes (including haul and return), what is the expected hourly production assuming 50 minutes of effective operational time?

   Hint

   Focus on unit rates to finalize the productivity value.