scopeeconomics
Find the bottleneck
1. Project brief
The excavation work
An excavator and trucks must work together to remove material. You are finding what limits output before paying for more resources.
Excavation and haulageFollow one truck
Follow a truck from loading to tipping and back. Select the excavator and a truck to understand their roles.
Project details
- Project
- Excavation and off-site spoil haul
- View
- Loading and haul cycle
See the work in contextSite photograph · inspect the components
Follow the truck through loading, travel, tipping and empty return. The workface waits if no vehicle is available to load.
Select a marker to connect the physical work to the estimate.
Image reference
Staff Sgt. Debralee Best / U.S. Army · public domain in the United States · resized; numbered markers added.
Source: https://commons.wikimedia.org/wiki/File:417th_Eng._Company_prepares_lots_for_paving_140814-A-FW423-956.jpg
Licence: U.S. federal-government work
On site
Follow one truck cycle
Illustrative scene. Use the lesson figures and records for measurements.
Productivity
1. Load5 min
2. Haul12 min
3. Tip3 min
4. Return10 min
32 bank m³/hExcavator active 33.4% of available time
On this operation
Select the loading machine and a truck. The four durations make up one truck cycle. Production is limited by the slower of loading and haulage.
Progress is saved on this device.