3. Different Approach for Estimation of Productivity

Try these first

1. 1.

   What is the ideal soil density assumed from productivity curves?

   Hint

   Look for the standard information on productivity curves presented.

2. 2.

   What does job efficiency represent?

   Hint

   Think of how long machines actually work in an hour.

3. 3.

   What is the primary purpose of applying correction factors to bulldozer productivity estimates?

   • To increase costs
   • To adapt ideal conditions to real-world conditions
   • To reduce labor costs

   Hint

   Think about why we would need to change ideal assumptions.

4. 4.

   True or False: A higher soil density always decreases bulldozer productivity.

   • True
   • False

   Hint

   Consider the work the bulldozer has to do based on material weight.

5. 5.

   During a bulldozer’s operation, the soil density was unexpectedly high, leading to a productivity drop to 70 loose meter cube per hour. If correction factors led to a 15% lower output from the estimated 100 loose meter cube per hour, calculate the adjustment made.

   Hint

   Think about re-calculating with factors that affect the productivity further.

6. 6.

   An excavation project requires calculating the total cost given a bulldozer with a unit cost of Rs. 26.06 per bank meter cube was used for 200 bank meter cubes. Calculate total project cost.

   Hint

   Focus on simple multiplication for total project expenses.