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2014-06

Headquarters of the Caisse des Français de l'Étranger

Rubelles (77) France

Bio-climatic construction

2014-06

Headquarters of the Caisse des Français de l'Étranger

Rubelles (77) France

The building is located in a contemporary suburban environment characteristic of the contours of our urban areas: diffuse and difficult to read. However, the place is well inhabited and the urban stakes are high.
The elements of the programme are being shaped with equal attention: an office building and an outdoor car park, forming a functional unit welded to the existing one. Yet here, without being monotonous, the architecture is unified by its abstract, massive and readable regularity. The surface parking, continuous and gross, is designed with the same frankness. Planted with wisdom and precision, 100 trees provide an unexpected landscape like an urban clearing.
The interior spaces operate a fusion between urban space and architecture. At the heart of the building is an atrium designed in all its dimensions, punctuated and federating the internal organization. 
Two types of spaces are dedicated to the two temporalities of use: those intended for work, intimate and comfortable and those conducive to meeting and strolling. However, there is no clear dividing line between them in a concern for the fluidity so much sought after in new ways of working. The transparencies between the inside and the outside, those arranged in particular in front of the "third places", offer a skilful dialogue between the tertiary activity and the urban environment. A new urban character is sown by a resolutely "in-situ" architecture.
The CFE headquarters is a bioclimatic building. The building has a custom-made and uniquely designed facade. The prefabricated breathable envelope consists of two opening glass skins made of wood on the inside and aluminium on the outside. Connected to sensors, it is managed by an automated opening/closing and cloaking system. The facade coupled with the atrium allows natural ventilation in summer, spring and autumn. Heating and cooling are provided by low-temperature underfloor heating systems powered by geothermal energy on a 70-metre deep groundwater table. The whole system is coupled to a heat pump. The construction is of a passive type.

Information

Contracting authority
Caisse des Français de l'Étranger
Project management
Eric BARTOLO associate architect BVAU-Bartolo Villemard Architecture Urbanisme (representative)
Associates/BET
3A Associate Architects, TN + Landscape Architects, RFR, RFR element, Avel acoustic, BETOM (TCE)
Website
Centre d'activités Saint-Nicolas - 160, rue des Meuniers 77 950 Rubelles
Calendar of events
2008 - delivery June 2014
Type of project
Offices and landscaping
Type of mission
Complete mission (design + execution)
Surface area
3 900 m² SHON
Amount of work
9.3 M€ HT 
Performance
Low Consumption Building
Energy performance
Primary energy consumption < 50 KWH /m²/year
Envelope
prefabricated double skin "breathable" mixed wood/aluminium facade. Custom-made production with BLUNTZER. Exterior over-insulation RT2010 compliant
Ventilation
Dual flow air-source heat pump ventilation. 
Heating
Geothermal energy on groundwater
Water management
DHW by solar collectors
Other intervener
Clément Guillaume (photographer)

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