Render of the stadium. Credit: Arup.; Render of the stadium. Credit: Arup.;

ACF Fiorentina, Florence

Total design for new football stadium for ACF Fiorentina in Florence.

The new football stadium for ACF Fiorentina in Florence is part of the redevelopment of a 48 hectare area. It includes public spaces, an interchange car park and a shopping mall. The site is adjacent to the airport and with only four kilometres west of the famous cathedral in the town center, it is well connected to the city and the surrounding areas.

Arup developed the project according to the 'total design' approach – bringing together a diverse team of architects, engineers and experts to enable a holistic approach and consider the building from a number of perspectives and disciplines.

The design takes inspiration from the local history and landscape to define a well-rooted building. It represents the opportunity to redevelop the area and to be the modern home of ACF Fiorentina. The venue focuses on the fans, using the latest technologies that will enhance the spectators’ experience before, during and after the matches and with special attention towards families.

To improve crowd flows and allow for a lean integration of services and logistics, the new stadium has been designed on a raised podium. It connects to the surrounding context and the nearby natural landscape. 

The flower-shaped bowl offers seats for 40,000 people on two tiers. It is designed to maximise areas with better visibility of the pitch and to guarantee the best distribution of the audience. The wavy façade reflects its geometry, inspired by the sinuous curves of the Tuscan countryside. In order to create a clear wayfinding for the spectators, the external envelope is raised on the four main accesses, just like the curtains of a theatre. 

The skin of the building is made of curved perforated metal panels, permeable to natural light, and provides transparency and visibility to the outside. An ETFE membrane characterises the roof and controls the amount of natural lighting to the turf, supported by a lightweight spoke-wheel structure. 

The envelope and bowl have been designed with a computational approach. This allowed us to define an optimised geometry, with high repetition of similar elements and limited production costs, despite the complex appearance. In a similar way, the articulated geometry of the cable roof has been generated and optimised with an iterative approach that allowed controlling the structural performance and the environmental implications.

Arup is responsible for multiple services such as architecture, structural design, building services, façade engineering, acoustics, fire safety, transport planning, ICT-AV, security, sports lighting, wind engineering and airport planning.