A unique manoeuvre for the placement of the segments.
Each segment is approximately 13m high and weighs approximately 430 tonnes for the cylindrical segments and 400 tonnes for the conical segments. Once the 6 segments that make up the two floats had been manufactured, the footing of the assembly slab was built, where the segments were placed on concrete supports at a height of 2m.
Two lattice cranes were used in the operations of lifting, turning, moving and placing the segments, a main 800 ton crane and a secondary 450 ton crane. The secondary crane assisted the main crane in the turning of the pieces by changing the longitudinal axis from vertical to horizontal. The 800 ton crane was used to transport the segments to their final position, and with the use of Ferrovial’s viaduct shoring system, errors of less than one centimetre were achieved in their placement.
The necessary tools for the manoeuvres were defined, calculated and certified. 29 ton metal pieces were fitted to the segments by means of bars and tensioned tendons.