Development of Lorraine Residential Area, Zäziwil

For the planned «Lorraine» residential development in Zäziwil the existing Kleemättli road was dug up and the entire infrastructure (utility lines, sewage line, road) was redone.

Main Data

  • Access road incl. retaining wall
  • Sewage system as part of separated system
    • Wastewater PP DN 250 (170m)
    • Combined sewers PP DN 300 (170m)
  • Potable water PE DN 150 (140m)
  • Spring water PE DN 60 to DN 100 (250m)
  • Utility lines (electricity, public lighting, TV, telecommunications)


J.-M. Thönen-Künzi, Zäziwil


IUB Engineering AG

Construction period


Construction costs

CHF 700'000

Scope of services

Design for construction, tendering, execution project, implementation, overall construction management (structural and undergound engineering, pipework), as-built drawings