3.1. Using Production Curves

Try these first

1. 1.

   What components are included in the cycle time of a bulldozer?

   Hint

   Think about what a bulldozer needs to do in a full operation.

2. 2.

   Explain what production curves represent.

   Hint

   Consider how distance affects performance.

3. 3.

   What does cycle time consist of?

   • Push Time
   • Speed
   • Haul Distance
   • Push Time
   • Backtrack Time
   • Maneuver Time
   • Push Time
   • Backtrack Time
   • Blade Load

   Hint

   Think about the different phases a dozer goes through during operation.

4. 4.

   Corrections factors are necessary because:

   • True
   • False

   Hint

   What happens to performance when conditions change?

5. 5.

   Given a bulldozer model has an ideal production rate of 40 loose cubic meters/hour with correction factors of 0.85 for visibility and 0.75 for material type, calculate the adjusted productivity.

   Hint

   Multiply the ideal productivity with each correction factor step-by-step.

6. 6.

   A bulldozer working on a slope with a 10% grade shows a decrease in output to 30 loose cubic meters/hour, while a similar one working on flat ground shows 50. Calculate the correction factor for the slope.

   Hint

   Think about how terrain directly affects performance.