News & Infos Investigation Shaft Paierdorf
A new construction method for vertical shafts by shield driving: 120m deep with a diameter of 9.5m this shaft is lined by pre-cast segments.
News & Infos Investigation Gallery Mitterpichling
Characteristics: Low overburden and floating rock in places.
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Tunnel Koralm

Construction supervision
  • 10 km investigation galleries and 2 shafts
  • Total costs: US Dollar 90 million
  • Construction period: 2004-2009
Investigation Operations West (3 lots):
> Gallery at Mitterpichling 3 km length
> Gallery at Paierdorf 5 km length
> Shaft at Paierdorf 120 m depth
> Full section 40-45 mē
Investigation Operations East (1 lot):
> Gallery Leibenfeld 2 km length + 60 m depth
> Full section 22 mē

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