The scope of the works essentially comprises the construction of overlapping tunnels, consisting of 17 segments, with each segment comprising two overlapping tunnels, incorporating two traffic galleries and a central service gallery. The width of the traffic galleries varies approximately between 11 and 16 metres, while the length of each segment ranges from 18 to 25 metres.
The construction of the tunnels includes all the works required for the construction of the structural elements foreseen, namely blinding concrete, the foundation slab, internal and external walls, intermediate slabs and the roof slab.
The works cover the complete execution of the structure of the different segments, with the remaining 17 sections presenting similar construction characteristics. The differences in the execution areas and volumes, expressed in m² and m³, will be determined proportionally according to the specific dimensions of each segment.
Traditional formwork for the execution of all structural elements
Segment length: between 18.00 and 25.00 m
Gallery width: between 11.00 and 16.00 m