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Engadiner Kraftwerke AGZernez

ROKS TP4: Sanierung Triebwassersystem Ova Spin – Pradella Sanierung Druckstollen Ova Spin - Pradella Los 20 – Bauliche Sanierung Triebwasserweg

Bauliche Sanierung des Druckstollens Ova Spin–Bain Crotsch (Länge 20'728 m, Ø 5,2 m) inkl. Fensterstollen (Laschadura, Sampuoir, Sasstaglià, Bain Crotsch) und Wasserschloss Bain Crotsch (obere Kammer, Vertikalschacht 105 m, untere Kammer). Leistungen: Betoninstandsetzung, Spritzbeton, Feinsedimentabfuhr (ca. 365 m³), Bohrung für Stollenen...

Submission deadline: August 20, 2026 (expired)Type: Tender

Engineering Structures, Concrete Works, Pipeline Construction, Concrete Repair, Steel Construction

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Content at a glance

Tender type:
Tender
Contracting authority:
Engadiner Kraftwerke AG
Published:
June 11, 2026
Deadline:
August 20, 2026
Topic:
Engineering Structures
Object:
Tunnel / Unterführung

Object classification

  • Tunnel / UnterführungPrimary

Tender description

Bauliche Sanierung des Druckstollens Ova Spin–Bain Crotsch (Länge 20'728 m, Ø 5,2 m) inkl. Fensterstollen (Laschadura, Sampuoir, Sasstaglià, Bain Crotsch) und Wasserschloss Bain Crotsch (obere Kammer, Vertikalschacht 105 m, untere Kammer). Leistungen: Betoninstandsetzung, Spritzbeton, Feinsedimentabfuhr (ca. 365 m³), Bohrung für Stollenentwässerung (DN 150), Baulüftung, Koordination mit Stahlwasserbauarbeiten. Realisierung über drei Bausaisons, alpine Lage.

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