The ASSIA headquarters extension. Building structure in wood, concrete and glass

Located in Chartres-de-Bretagne, between a residential area and other business buildings, ASSIA, an association for personal assistance, is commissioning an expansion of its headquarters: a new 3-story volume on a 600 square meter plot of land to the south of the existing building, which will be connected to it with a glass walkway.

Expansion of ASSIA headquarters with versatile and sustainable modular offices

The project by ATELIER 56S for the expansion of the ASSIA headquarters consists of a layout that can evolve over time. A structure with wooden beams and pillars, with a regular spacing of 3 meters, allows for modular offices of 11 square meters each that can be grouped together to create larger units. The offices face south to fully enjoy the exposure and are protected from direct sunlight by an external wooden sunshade mesh.

The ASSIA headquarters extension. Building structure in wood, concrete and glass

The harmonious combination of concrete and wood in the prefabricated core

The reinforced concrete core housing stairs, elevators, and technical rooms pleasantly contrasts with the wooden floor of the rest of the building. The entire construction is prefabricated: both the central concrete core and the CLT wooden structural system.

The material expression of the project: pre-treated wood symbol of elegance and functionality

All the materials used remain deliberately explicit to assert the construction methods and different treatments. The sunshade and the facade cladding are made of pre-treated wood, with slats five centimeters wide. Their appearance changes as the position of the sun varies throughout the day, along with the continuous triple glass facade that reflects the surroundings during daylight hours and reveals the wooden floors in the darkness of the evening.

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Atelier 56S

7 Rue de l'Horloge, 35000 Rennes, France