From the outside, the school centre in Davos by Cura Architects appears to be a new build. © Daisuke Hirabayashi

In 2022, the municipality's building authority launched a competition for the Davos school complex. Despite the client’s wish to replace the 1960s building with new construction, Cura Architects convinced the jury of the merits of conversion. The design takes an unusual approach: the new structure is superimposed over the existing framework. 

Following a complete refurbishment, the existing solid structure was extended along its long sides and upwards using a timber construction. Thanks to this unique approach, the structural shell was reduced by 40 %, while preserving the stored grey energy. To protect the existing structure, the forces generated by the additional storey are transferred via the two side extensions. The load-bearing components can be economically sized due to the short spans. The two Munich-based architects place great emphasis on the use of local and renewable materials. The timber structure, board-and-batten ceilings with sheep's wool inserts, and cork floor coverings provide a natural contrast to the cool concrete structures of the existing building. 

The new building comprises individual workstations, staff rooms, and a canteen. The original annexe has been transformed into a central wing that connects the primary and secondary school buildings. The new school centre features open circulation zones and an interconnected layout of classrooms and group rooms, allowing for a high degree of spatial flexibility and facilitating diverse uses. To prevent the need for costly future renovations, the upper floor has been designed so that the currently freestanding roof garden can be converted into classroom space. This enables the growing demands on the spatial programme to be met at any time. 

The open atrium has been cleverly positioned to resolve the split levels created by the considerable ceiling height of the canteen. It serves as a central, versatile communal space. At the same time, it functions as a kind of natural chimney. Thanks to its central location within the building, the classrooms and offices can be efficiently cross-ventilated. This eliminates the need for a controlled ventilation system.

This flagship project in Switzerland is a prime example of efficiency, with just two years passing between winning the competition and the grand opening. Furthermore, the facility’s entire energy requirements are met by geothermal energy and photovoltaic modules. The new school centre in Davos is a sustainable, cost-efficient building that demonstrates how existing structures can be treated with respect and innovation. 

Architecture: CURA ArchitektenClient: Gemeinde DavosLocation: Davos (CH)

Construction costs: CHF 17.5 millionCompletion: October 2024Construction management: BaulinkCivil engineer: Conzett Bronzini PartnerBuilding physics: Kuster + PartnerFire protection planning: BachofnerSignage: ToniqueTimber construction: Künzli DavosElectrical planning: Elkom PartnerVentilation: Caviezel KlimaHeating: Collenberg EnergietechnikPlumbing: Marco Felix