Project in Detail
Siège de l'Opac de Paris
CunoBrullmannJean-LucCrochon+Associés, Paris, France
***The architectural concept of OPAC de Paris headquarters (Local Authority Tenant)
The new headquarters of OPAC de Paris offer a full set of services, which include office areas, a restaurant and a conference room. The architectural concept, which is both ecological and experimental, matches the requests of the client while adapting to the specific features of the original building.
Formerly a parking lot, later the seat of the editorial office of “Le Monde”, the headquarters of OPAC de Paris are set into of a complex concrete structure superposing several meshes.
Minor demolition works have released a great architectural potential, thereby creating an experimental space around the large hall.
*A new experience of the working place
Open mezzanine floors overlooking the main hall host neutral spaces which constitute the very heart of the building. Flanked by the main aisles, the atrium offers several areas for informal communication and visual exchanges.
The perfect readability of the building furthers a straightforward and pleasant appropriation of spaces.
**An eco-sustainable building
The concrete skeleton is used as a thermal reservoir. Natural convection takes place under the glass panels which cover the hall.
The upward air flow thereby generated provides an efficient cooling of the working area.
The new external facades can be opened to let the fresh air in, whereas hot air flow is ensured by the chimney effect in the hall.
On summer nights, fresh air cools down the structure. In the morning the openings are closed and the building takes advantage of the cold stored in its mass during the night.
The absence of false floors allows for maximal natural lighting.
In order to fully optimize the thermal capacity of the building and make the best use of the space between floors, high and low power lines are embedded in the structural beams.
OPAC de Paris (Local Authority Tenant)
Cuno Brullmann, Jean-Luc Crochon, Daniel Durassier, Giovanna Boffa-Huertas
Facades & glass panels:
Commins Acoustics Workshop
Offices, restaurant, conference room
15 000 m²
competition: March 2005
design: May 2005 – July 2007
construction: August 2006 – April 2008
Gaston François Bergeret