Bâtiment F
Building F embodies all the ideas that led to the creation of the Campus block, of which it is the flagship within the Sollys project. Small in size, a three-story building (ground floor + 3 floors) with a footprint of 14 x 23 meters, the project reflects a efficient approach, using minimal technology to maximize space and thus offering a different workplace experience. Its architecture is a unified whole from which nothing can be subtracted.
It manages to combine generosity and restraint.
Generosity is reflected both in the reversibility of its programming and in the quality of the various spaces that make up the building:
The ground floor, with its generous ceiling height (4.50m), houses a café/bar on its western side, opening onto Place Hubert Mounier and featuring a large terrace contributing to the vibrancy of the neighborhood, opposite the
contemporary music venue at the Marché Gare. On its eastern side, the lobby, running between the street and the landscaped courtyard, provides access to the office floors.
Floors 1 through 3 offer three very open-plan office spaces that enhance the connection to the surrounding urban context and provide ideal natural light.
The clarity of the layout stems from a desire to offer flexible floor plans in order to facilitate and multiply the
potential uses. All vertical circulation and technical rooms are concentrated in the eastern part of the building, freeing up these generous floor plates.
On the top floor, a meeting room benefits from immense windows framing remarkable landmarks of the neighborhood (the chimney of the Cité Perrache, the Aires Mateus tower, the Ste Foy cliffs, etc.) and opens onto a large terrace, accessible to the entire building, overlooking the neighborhood and the wider Lyon landscape. Large planters break up the starkness of this sunny space.
All levels are served by an exterior staircase in the Chambord style, combining metal and wood.
This beautiful staircase is in keeping with the style of staircases in old Lyon (Cour des Voraces, Vieux-Lyon, etc.). With views of the Rhône River and the Alps in the background, it contributes to the design of the façade and offers a high-quality user experience. Oversized for the office version of the building, it allows for its possible reversibility into a higher education institution or other programs that require greater density.
Simplicity is reflected in the frugality of the construction and technical choices that were made:
The load-bearing concrete structure defines Building F. It clearly organizes its plan and creates facades whose grid is consistent with the historical character of an industrial architecture. Highly optimized in terms of calculations, the concrete structure incorporates meticulous details that enhance the quality of the spaces created (column/beam assembly, rainwater harvesting in the cornices and discharge via the spray jets, precise layout of the concrete core walls and exposed slabs, etc.).
The facade infill is achieved using high-performance aluminum joinery and timber-framed transoms with bio-sourced wood wool insulation. These transoms are clad with white cellular aluminum panels. The white of the facades corresponds to the shades of white required by the master plan. - Designed according to bioclimatic principles,
the building takes advantage of its location and
orientation to open generously to the outside.
It benefits from the substantial shadow cast by the 16-story tower on its south facade. External blinds contribute to managing solar gain while allowing for effective natural ventilation.
Inside, the elimination of superfluity reveals the raw concrete (cores/columns/beams/slabs) and the technical systems, in the absence of suspended ceilings and raised floors. The highlighting of technical equipment and the carefully positioned acoustic baffles characterizes the interior of the office floors and provides them with a significant
clearance (3.30m under the slab, 3m under equipment).
The chosen technical systems are simple, proven, and allow the desired level of comfort to be achieved with minimal energy consumption and maintenance. Heating and cooling are primarily provided by an active slab system that fully optimizes the thermal inertia of the concrete visible in the offices and offers the best possible temperature quality. Supplementary heating is provided by finned radiators at the base of the windows to individualize the heat output. Fans ceiling improve the perceived temperature in summer and reduce cooling needs.
Load-bearing concrete structure combining precast concrete facade elements (cornices) and cast-in-place concrete elements (facade columns, slabs, and interior partition walls). Infill with FOB transom + bio-based insulation (wood wool) + lacquered cellular aluminum finishing panels. Aluminum joinery for the upper floors with blackout blinds and glass railings. Steel joinery for the ground floor. Exterior staircase with lacquered steel structure and oak treads.
Laced steel terrace and staircase railings. Heating and cooling via active slab powered by a cogeneration unit running on green gas.
