9-9^bis, Office Building

The new part is attached to the existing structure and the top floor extends into an overhang above the roof. The facade of the existing house and the wall below the overhang are faced with mirrored stainless steel panels, which reflect the brick walls and the tile roofing: this mirror effect blurs the boundaries between the old and new sections.

The structure of the new building is steel, picking up the construction logic and the materials of the old mine buildings, which are primarily brick, with technical adjuncts made of steel (mineshafts, water tower, frames, etc.). The top floor overhang is supported by two external truss beams, which also pick up the essence of the mine buildings. The glass facades alternate between fixed sections, made of clear glass protected by external blinds, and opening sections, made of tinted glass with a very low solar factor. Openwork metal walkways outside the offices provide users with an extended outdoor space, as well as a platform for maintenance work on the glass facades.