This central structure will be shaped by special formwork, which progresses in an automated way. This fascinating tower has a central vertical core (with stairs,elevators and technical rooms), which not only supports the intermediate floors and must withstand horizontal impacts, but also has to compensate for the torsion transmitted by the oblique enclosing piers. The new skyscraper designed by Zaha Hadid will stand side by side with the Allianz Tower by Arata Isozaki and will enrich the Milan skyline. The base of the building consists of a freeform slab with a steel structure, which offers room for commercial space. The foundation is composed of a 2.5 meter thick concrete slab and 64 columns each 36 meters in length with a diameter of 1.5 meters. The slabs are made of reinforced concrete that are cast on site, while the outer piers consist of reinforced concrete elements with a high level of reinforcement. The tensions were dissipated downwards through GEWI piles and inclined girders. In order to counteract this, metal frames were connected with re-tensioning rails at the main openings. The inclination of the piers causes a torsion, which leads to considerable tension in the walls of the core. The central core ensures the necessary building resistance to horizontal impacts. The structure mainly consists of concrete with some steel-concrete composite elements. Due to the different orientation of the subsequent floors, the building's geometry depicts a rotational movement along the vertical axis.
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