Tenders Are Invited For Railway Tunnel Construction Work – St. Moritz – Tirano, Partial Renovation Of The Puntalta Tunnel, Km 33,786 – Km 33,832, Construction Work

Railway Tunnel Construction Work – St. Moritz – Tirano, Partial Renovation Of The Puntalta Tunnel, Km 33,786 – Km 33,832, Construction Work. The 46 M Long, Single-Lane Puntalta Tunnel Is Located On The Cavaglia - Cadera Section Of The Rhaetian Railway. It Is To Be Renovated According To The “Standard Construction Method For The Bernina/Arosa Tunnel (Nbw Ba)” And Designed For A Service Life Of 80 To 100 Years. * Main Quantities: * Excavation / Profile Expansion Rock: 420 M3 * Base/Drainage Excavation: 270 M3 * Base Concrete: 105 M3 * Excavation Protection Made Of Shotcrete 130 M3 * Interior Cladding Made Of Shotcrete: 150 M3 * Reinforcement: 10 Tons * Cable Pipe Blocks (In-Situ Concrete): 350 M1 * Mountain Water Sealing: 450 M2 * Drainage / Seepage Pipe: 300 M1 * Natural Stone Work: 80 M2