Framework contract - tunnel assessment operational activities on motorways a10, a7, a12 and a26 under the management of “1° tronco” genova. maintenance, restoring, reparation, conservation activities.

The majority of works consist in:

• the removal of the existing deteriorated protections and in their replacement with new protections consisting of metal meshes and corrugated sheets in stainless steel.
• milling and hydro demolition of the cortical surface in particularly damaged sections with reconstruction using reinforced spritz beton and installation of stainless steel metal meshes.
• demolition and reconstruction of lining rings, pre-spritz, spray waterproofing and, after installing prefabricated concrete elements, casting of concrete for the reconstruction of the final lining.

TECHNICAL SPECIFICATIONS