Part 5/9:
The Construction Process
A state-of-the-art factory has been established to create the tunnel's concrete sections, reminiscent of giant Lego bricks. The production process involves carefully curing each of the 79 normal elements, each comprised of nine segments, with 711 castings required overall. An impressive feat, each element measures 2,117 meters in length, 40 meters in width, and 10 meters in height, weighing approximately 73,000 tons each.