Multi-purpose building including 14,500 m² of offices and a sports gym. Façade concept tiered in function of orientation in order to adapt to performance requirements. Creation and optimization of extruding pleated aluminium cladding in the north façade. Integration of reduced framing without a visible exterior frame (smooth entirety) Development of silk-screened glass cladding, which creates an evanescent casing in the southern façade and forms the first layer of sun protection. Objectives RT 2012 -30% (consumption) Certifications BREEAM level «Very Good» and HQE «level Excellent».