After initial sketches during which the program seemed increasingly uncertain in its evolution, the choice of a modular structure allowing for a flexible and evolving project quickly won over the client.
Within a steep and irregular shell, the challenge was to find the right measurements to divide the space in a way that would suit both the demands of the workplace and the constraints of the existing envelope.

We designed a secondary structure using HEA steel beams on a 3-by-3-meter grid, dividing the 130 m² basement into twelve nearly equal spaces. This structure, also divided vertically in a 4/3 to 1/3 ratio, made it possible to vary ceiling heights, creating technical soffits to house mechanical systems, while expanding certain selected spaces.

The partition panels, made of oak frames filled with either solid oak or glass, come in two possible widths to adapt to the complex geometry of the perimeter. The steel floor rails and HEA beams are pre-drilled, allowing for easy reconfiguration of the layout.
The glass panels are equipped with oak slat screens (claustras) that can be adjusted to create visual privacy. The upper transoms are always opaque and, in some cases, micro-perforated to allow the reversible HVAC system to regulate the office temperatures.

Access to the basement is provided by two staircases, further enhancing the adaptability of the layout and promoting flexibility. These spiral staircases wrap around a square-section column that echoes the language of the existing concrete structure.
From the open areas, the closed offices appear to be naturally lit and, through their transparency, create a real sense of depth.