The new buildings (145,000 sq. m) will have the capacity for 9,300 civilian and military staff. Almost 4,000 staff will occupy offices in the Western end of the site (the Corne Ouest). The Ministry will be installed at the "French Pentagon" in 2015, constituting a new eco-district in the Greater Paris area.
Architecturally, the stand-out features are the vast origami-like roof, the horizontal slat works on the stratified facade evoking the nuanced tones of a cliff, and the innovative, green bioclimatic design.
Egis's teams worked on the building envelope, creating synergy between energy resources to create a high-performance system meeting three-quarters of the building's annual heating, cooling and ventilation requirements.
Within the OPALE consortium (Bouygues Bâtiments Ile-de-France, Exprimm, Thales, and others), which was awarded the contract for the financing, design, construction, operation and maintenance of the project, Egis is responsible for the technical engineering, facade design and sustainable building engineering.
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