Tour Phare, Paris

Project value: £400m, client: Unibail-Rodamco. We delivered both a LEED assessment and a BREEAM assessment for this iconic new 300m high office tower in the La Défense commercial district of Paris.

Sustainability features include:

Carbon: Roof mounted wind turbines, roof mounted photovoltaic array, perforated steel brise soleil provides shading while allowing natural daylight to penetrate, high efficiency double glazing, efficient chilled beam free-cooling system, district heating scheme supplies heating and hot water requirements, temperature set point for cooling is 26°C, energy efficient lighting systems with banked controls linked to photocells and presence detectors, Double deck lifts, which save energy, all floors will be separately sub-metered to accurately monitor electricity consumption, predicted energy consumption 30% lower than French building code requirements.

Waste: Building waste will be segregated and a compactor and baler will be used to manage waste and recycling. Transport: The site is above a major metro station. Pedestrian flows are a key focus of the design. 95% of building users will travel to Tour Phare via the Metro, only 100 car parking spaces will be provided for the 8000 building users, convivial stairs facilitate mobility between floors of the office tower, with staircases designed to be used on a daily basis, rather than only in emergencies, with the aim of reducing elevator use between floors.

Water: Rain and waste water collection tanks in basement levels, water efficient fixtures. Habitat and wildlife: The development will result in a net gain in vegetation and species at the site. Equity and fair trade: Wide consultation was conducted with users of the La Défense area to assess the user needs for the building. Health and productivity: Enclosed loggias with openable windows on each floor will provide occupants with access to fresh air, roof garden for office workers, narrow plan and floor to core ratio help maximise natural light and views.

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