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Diagonal Zero Zero - Barcelona, Spain
Diagonal Zero Zero, or Diagonal 00 Telefonica Tower is an award winning skyscraper in Barcelona, designed by the architect Enric Massip-Bosch/EMBA and developed by Consorci de la Zona Franca de Barcelona. The building is 110 meters tall (361 feet) and hosts in it’s 24 floors the corporate activity of the multinational in Catalonia, including their R&D facilities and their business incubator, Wayra. Diagonal Zero Zero is an outstanding example of High-tech architecture in the city. Its structure, calculated by the engineering firm MC2-Julio Martínez Calzón, was erected in only 8 months, working in three shifts a day, seven days a week. The structural tipology of the building is a variation of the tube-in-tube scheme, in which the core (or inner 'tube') is built in concrete, and the perimeter structure (or outer 'tube') is built in steel. This perimeter structure is split in two rings: an interior vertical structure of very slender H pillars (10x10cm in the upper half of the tower, 14x14 cm in the lower half, under the 13th floor hosting the technical floor), placed every 135 cm; and a exterior bracing lattice supporting the torsion and flexing stresses of the tower produced by wind or earthquakes.
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