Emscher sewer lean

Personen feiern die Inbetriebnahme des Emscher-Abwasserkanals

The Emscher sewer projectwas the starting point for lean construction at Wayss & Freytag Ingenieurbau AG, with the aim of making construction processes more efficient and reducing waste.

Added value

Reduction in working time per process from 17 to 8 days
58 % time saving when changing pipes (from 40 to 17 minutes)
The costs saved are estimated at around € 1,400,000 for the pipe replacement process

Project and process analysis
Served to analyse work processes, identify weak points and implement targeted improvements.
Waste Walk
Systematic monitoring to recognise and reduce waste.
Spaghetti diagram
Recorded and analysed the movement routes of personnel and materials on the construction site.
Objective: Visualisation of travel times to identify potential for improvement.
5S method (redesign of the shaft layout)
Rearrangement of equipment and materials according to the principles of the 5S method.
Goal: Better systematisation and standardisation, optimised work sequence and fewer obstacles in the process.