Superlit is a part of the solution with its special design GRP pipes in the ZİGANA Tunnel Project. Ventilation problem in the highway tunnel is covered by a special designed SUPERLIT GRP composite pipes of 3.1 m diameter lined inside the vertical ventilation shafts with a diameter of 3.6 m. Ventilation shafts are located at 3 different points along the tunnel and height of the shafts are ranging from 150 m to 400 m .
When compared to conventional lining methods – smooth interior surface of SUPERLIT GRP composite tubes allows smaller cross sectional area for ventilation. In addition to that, high mechanical properties and lightweight structure provides fast and safe installation. The project also stands out as an extraordinary project with its installation methodology and special installation accessories designed on GRP pipes.
When the 2×14.5 km along Double-Tube Motorway Tunnel is completed, it will be the longest tunnel in Europe with this feature, and will be the second longest tunnel in the world.