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Tertiary campus IN/OUT, Boulogne Billancourt, France

Monday 02 Dec 2013

Design to call home about...

Photographs: Thierry Lewenberg-Strum 
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Former factory for telephone parts transformed into commercial campus in Paris 

A former factory for telephone parts dating back to the 1930s has undergone a drastic renewal project courtesy of DTACC and Agence Jouin Manku. Situated on the banks of the River Seine in Paris, the industrial building is now a commercial office campus owned by Societe Fonciere Lyonnaise (SFL), a successful commercial property developer.

Having worked with Agence Jouin Manku on the realisation of the Mandarin Oriental Hotel in Paris, SFL approached the firm to help transform this 6-storey building as part of its 387,500 sq ft commercial campus. IN/OUT by DTACC and Agence Jouin Manku centres on the transformation of the factory building while Agence Jouin Manku designed a contemporary amenities wing with DTACC as architects of record.

As visitors enter the former factory they are greeted with a crystalline glass pavilion. Encasing an area that once formed part of an open-air courtyard, the new architectural gesture softens the line between what remains of the courtyard and the ‘industrial fortress’ of the Bocage building.

Drenched in light which permeates through the glass walls and ceiling, the pavilion acts a welcoming lobby for the original building. The structure is supported by a series of intertwined wooden beams which create an intricate latticework, dipping down to brush the floor at one point only.

Potentially the most dramatic new element at the commercial campus is the creation of a new amenities wing. Inspired by the Saint Cloud Park, the River Seine and the verdant nature found in the local region, the team has designed a fluid 40,000 sq ft space sheathed in iridescent tiles.

The team explains: “The flowing shapes of the project recall the movements of nature. To underline this idea, the roof of the wing has been designed as a coloured envelope wrapping the building. The coloured stainless steel tiles were chosen for their particular iridescent character. In front view, the tiles are green, but their colour changes as the angle and light move. This gives the building a dynamic and always changing character, echoing the variations in the sky and sunlight.”

Within this glossy shell visitors will find a café, a restaurant, a 200-capacity auditorium, corporate board rooms, numerous lounges and a fitness centre. There are also two generous terraces for users to engage with the natural elements that inspired the design.


Client: Societe Fonciere Lyonnaise
Architect: DTACC
Agence Jouin Manku
Architects of record for amenities wing, glass pavilion and lobby: DTACC
Structural and façade engineers: TESS
Lighting designer: ACL
Landscape designer: Pascal Gasquet
Contractor: Bouygues Batiment

Key Facts

Status Completed
Value 0(m€)
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Jouin Manku

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