Productivity, Crew and Machine Utilization

Earth Hauling Productivity

The production rate of each earth-moving job within Work Package 1 and Work Package 2 is shown in the tables below, with the following assumptions:

  • Work Package 1 only utilizes the dozer, as the distance between cut and fill nodes are short (20 metres)
  • Work Package 2 only utilizes the truck, since cut volumes are transported off-site as soon as the truck is filled and the travel distance to the waste site is 30km
  • Productivity rates in the tables below assumes only one dozer or one truck
  • An efficiency factor of 0.75 is applied to calculate the productivity
  • The truck is assumed to travel at 24km/h for 30km one-way to move the cut volumes to the off-site waste collection yard

Crew and Machine Utilization

For the project, we had two excavators and had to determine the number of trucks/dozers used to utilize our crew and machinery. The values for each Work Package and job can be found in tables below.

  • For each job in Work Package 1, two dozers were available. Some jobs used two while others only used one dozer
  • The crew productivity for each job in Work Package 1 was govern by the lowest productivity between the excavators and the dozers
  • For each job in Work Package 2, 12 trucks were available and every jobs used all of them
  • The crew productivity for each job was govern by the lowest productivity between the excavator and the truck. However, the truck governed for all jobs in Work Package 2.
  • The fill factor was 0.83