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Project Year 2011
Kavacık-Paşabahçe-Beykoz Waste Water Collection Tunnel
Kavacık-Paşabahçe-Beykoz Waste Water Collection Tunnel
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Location: Kavacık-Pasabahçe-Beykoz, Istanbul / Turkey
Client: İSKİ - İstanbul Water and Sewage Authority 
NTF Scope: Detailed Design and Construction
Construction Start Year: 2005
Completion Year: 2011
Estimated Cost: USD 30 million

Purpose:

  • Collection of Waste Water from Beykoz District and 
    Conveyance to Paşabahçe Waste Water Treatment Plant

Project Highlights:

  • 7,200 m / 2.2 m TBM Tunneling
  • 1,800 m / 1.2 m Hand Driven Tunneling
  • 12 Each 7.5 m Main Tunnel Shafts
  • 8 Each 5.0 m Connector Tunnel Shafts
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