Tenders Are Invited For Construction Work – Master Builder Work Securing The Spreitgraben Avalanche Gallery

Construction Work – Master Builder Work Securing The Spreitgraben Avalanche Gallery. The Project Provides For A Comprehensive Structural Upgrade Of The Existing Structure: * Creation Of A New Pile Foundation In Order To Be Able To Safely Transfer The Future Higher Loads From The Debris Flow Deposits Into The Subsoil. * Installation Of A New Floor Slab, Which Stiffens The Structure And Secures It Against Earth Pressure. * Placing New In-Situ Concrete Walls In Front Of The Existing Gallery Exterior Walls To Absorb The Horizontal And Vertical Forces. * Creating A New, Reinforced Gallery Ceiling. * Reorganization Of The Service Lines In The Street And Improvement Of Drainage. * Securing The Bottom Of The Stream Channel Using A Block Carpet And Micro-Pile Bars To Protect The Gallery Ceiling From Block Impacts. Main Volumes: * Demolition Of Pavement (Breaking Up/Milling): Approx. 1000 T * Excavation Work: Approx. 10,000 M³ * Temporary Anchors For Excavation Pit Stabilization: Approx. 1,920 M * Cased Drilled Micropiles: Approx. 4,800 M * Formwork: Approx. 3,600 M² * Reinforcements: Approx. 730 T * Concrete: Approx. 4,450 M³ * Pmma / Pbd Seals: Approx. 1550 M² Each * Wastewater Pipes: Approx. 500 M * Cable Protection Pipes: Approx. 1760 M * Covering (Rolled Asphalt, Mastic Asphalt: Approx. 860 T