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www.cpi-worldwide.com CPI %u2013 Concrete Plant International %u2013 4 | 2025 65Tor Alva in NumbersTor Alva rises 30 metres, about the height of a ten-storey building. It%u2019s built from 124 3D-printed elements, including 48 fully structural columns and a domed cupola at the top. In total, over 2,500 layers of concrete were printed%u2014each just 10 mm thick. The printing process took around 900 hours, equivalent to over a full month of continuous production. The tower spans up to 9 metres in diameter at its highest level where the viewing platform theatre seats 32 visitors.Structural Engineering, Material Innovation and Technical DevelopmentTor Alva showcases major advancements in computational design, digital fabrication, structural engineering, and material science%u2014made possible through close interdisciplinary collaboration across architecture, engineering, materials research, geodesy, and robotics. The Chair of Structural Engineering %u2013 Concrete Structures and Bridge Design (Prof. Dr. Walter Kaufmann) played a key role in developing and testing load-bearing, reinforced 3D-printed concrete columns. This research, conducted by Prof. Kaufmann, Dr. Alejandro Giraldo Soto, Dr. Lukas Gebhard, and Dr. Lucia Licciardello, deepened understanding of how reinforcement can be effectively integrated into concrete structures while printing. Since 2017, the Chair of Building Materials (Prof. Dr. Robert Flatt) has been working together with the Chair of Digital Building The cupola serves as a performance space with 32 seats and a central stage. %u00a9Benjamin Hofer, Nova Fundaziun Origen