Sparvo tunnel

A1 Motorway – Italy – 2015

TECHNICAL SPECIFICATIONS Owner: Autostrade per l’ItaliaGen. Contractor: San Benedetto Val di Sambro ScarlDescription: S460 steel shells were installed using hydraulic equipment specially designed and developed by the Cimolai technical department. The project made use of calendered panels made from metal sheets with a thickness of between 30 mm and 70 mm, reinforced with curvedT-section ribs (thickness 50 mm to 100 mm).