Technical specifications

Scope of works:

  • Construction of sewerage tunnel
  • length: 980 m + 1,200 m Internal
  • diameter: 3.00 m
  • External diameter: 3.58 m
  • Min. radius: 1,000 m
  • Min. cover: 3.75 m
  • Max. cover: 5.00 m

Jacking pipes:

  • Type: DN 3000 reinforced concrete
  • Number: 735 pieces
  • Length: 3.00 m
  • Wall thickness: 0.29 m

Construction method:

  • Pipe jacking using an AVND 3000 machine

Geology:

  • Quaternary gravel

General data

Project
Sylvenstein Dam BA (construction lot) 3
construction of a new seepage water tunnel
Lots 1-3

Client
Wasserwirtschaftsamt (water authority) Weilheim for the Free State of Bavaria

Contractor
Wayss & Freytag Ingenieurbau AG

Construction period
March 2013 to July 2014

Construction costs
approx. € 5.6 million

 

 

 

Utilisation
Water/Sewerage
Type
Sewerage tunnel
Length
980 and 1.200 m
Construction Method
Pipe Jacking using an AVND 3000

More Information:

The sewer network rehabilitation Landsberger Straße, 2nd construction phase, is to relieve the existing sewer system in the Pasing and Laim area, which dates from the middle of the 20th century. In order to drain off the large quantities of wastewater in Munich's West / Southwest, a new sewer is planned in Landsberger Straße. After completion, it will connect to the already constructed DN 3000 sewer at the Laim roundabout and drain off the resulting mixed water via the Hirschgarten rainwater retention basin. The 2.2-kilometre-long tunnelling section starts from the Laim circle and ends "Am Knie" in Pasing. Wayss & Freytag Ingenieurbau, tunnelling division is constructing the sewer on behalf of the Munich Municipal Drainage Authority.

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