The replacement of damaged drinking water pipes is one of the main tasks in the construction programmes of the network operators. This task is becoming increasingly difficult and complex due to the congested network of pipes and cables in the underground and the ever increasing traffic conditions. STEIN engineers can draw on a wide range of experience for the planning of such construction projects.

In addition to the conventional replacement of pipelines, transport and main lines must also be adapted to the new requirements in the supply networks. Depending on the region, water demand and supply security, sometimes procedures are required to reduce existing pipe cross-sections (or alternatively new supply lines) in order to achieve increased flow rates.

The team of STEIN engineers has extensive experience, especially in the application of trenchless construction and replacement methods. These methods are required above all for the undercrossing of important roads or railway lines as well as water bodies.

In addition to conventional approaches, special solutions such as pipeline ducts or utility corridors / tunnels can also be planned.

Figure: Multiple laying of pipelines within casing pipes, cable ducts and utility corridors / tunnels


  • SP1. Establishing the basis of the project
  • SP2. Preliminary design
  • SP3. Final design
  • SP4. Building permission application
  • SP5. Execution drawings
  • SP6. Preparation of contract award
  • SP7. Assisting award process
  • SP8. Project supervision
  • SP9. Project control and documentation

Special services:

  • New construction with trenchless construction method: e.g. auger boring, microtunnelling, pipe jacking, mining, tunnelling, etc.
  • Replacement with trenchless construction method: pipe bursting, pipe extraction with splitter cone, pipe extraction with pulling tube, pipe extraction with auxiliary pipes
  • Crossing of rivers, roads, etc. using HDD methods