scopeeconomics
Can you deliver this main?
1. Project brief
The crossing scheme
The main has a stated budget, deadline and site constraints. You are testing a complete construction method against all three.
Water-main delivery decisionChoose a buildable method
Install 500 m of main in a supported trench. Add a trench box or sheet-pile arrangement.
Project details
- Project
- Water-main installation programme
- View
- Method, resources and programme
See the work in contextSite photograph · inspect the components
A productive workface needs loading plant, transport, people and a workable route at the same time.
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
Inspect the crossing constraints
Illustrative scene. Use the lesson figures and records for measurements.
Value engineering
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.
Pipe installation output6 m/hour
Working duration10.4 days
Total estimate£162,975
Progress is saved on this device.