1.4. Haul Unit Exchange Time

Try these first

1. 1.

   Define Haul Unit Exchange Time.

   Hint

   Think about the time it takes between truck movements.

2. 2.

   What is the ideal angle of swing for an excavator?

   Hint

   Visualize the placement of trucks and excavators.

3. 3.

   What is Haul Unit Exchange Time?

   • A. Time for loading
   • B. Time for unloading
   • C. Time for a new truck to come in after one leaves

   Hint

   Focus on the processes between truck movements.

4. 4.

   True or False: An angle of swing greater than 90 degrees will improve productivity.

   • True
   • False

   Hint

   Remember the ideal positions discussed.

5. 5.

   An excavator positioned with a swing angle of 120 degrees and an actual height of cut at 3m when the optimum height is 4m is observed. Determine the correction factor and the effect on productivity.

   Hint

   Consult the reference table for correction factors.

6. 6.

   Design a detailed workflow for a construction project that maximizes haul unit exchange time. Consider time estimates and potential delays.

   Hint

   Use a diagram to outline the workflow.