Passive offices and silo car park

Situated on the edge of the Courrouze district and facing the Rennes ring road, the project comprises two buildings and a silo parking lot.Its architecture is a proposed response to the challenges posed by the evolution of office buildings and is designed to support open-plan working methods.At the heart of the main building (which houses Arkéa's headquarters), a large atrium allows views to flow from one floor to the next while providing easy natural ventilation.As a meeting place, the corridors are wide and open to encourage informal exchanges between employees. The structurally unobstructed floors are extended outward by threaded balconies that wrap around each level, providing sun protection and ease of maintenance.Connected by cantilevered staircases, these courtyards are also spaces that can be appropriated for seclusion. The volume, marked by horizontal lines, is crowned by a roof that alternates between common rooms, terraces and gardens.The rational volumetry is a response to the urban principles of the district, but also an optimum for the development of a mixed wood-concrete structure, in which each material finds its place according to its intrinsic properties (inertia, load-bearing capacity, carbon weight).