Sunday, September 17, 2006

The Hypergreen concept skyscraper

Lafarge’s Building Standing 246 meters high, Hypergreen offers a usable surface area of over 94 000 m2 with a small ecological footprint compared to current high-rise buildings

How can high population densities be managed? Simultaneously how can we limit the environmental impact of buildings? The key lies in constructing environmentally responsible buildings that blend in harmoniously with the city landscape… Hypergreen aims to make this dream a reality while meeting the requirements of the “sustainable building”: choosing ecologically friendly materials, simplifying construction methods and respecting the environment in its day to day use.

Making use of Lafarge’s most innovative products

By choosing environmentally friendly materials, the Hypergreen concept has a limited impact on the environment throughout its life cycle.

A new take on construction

Owing to its great fluidity, Agilia® concrete enables to build more rapidly structural elements such as slabs, walls and columns, with less efforts and less noise than with traditional concretes. In the same time, it ensures unique esthetic properties. The secret of Agilia® is its self-placing and self-leveling power.

Simplifying the construction of the skyscraper

The “outer skin” or “mesh”, which ensures the horizontal stability of the building, consists of ultra high performance concrete Ductal® prefabricated components. These various parts are then assembled directly on site, making work at the building site itself (which is dust-free) quicker and safer.
Compared to a traditional concrete, enables to reduce the raw material content as well as the total weight of the building. This advantage has a knock-on effect on all the stages of the construction: planning, implementation, transport, etc.

Taking climatic orientation into account

The “mesh” is oriented according to sun position, wind and climate and it has varying degrees of perforation depending on the orientation. It allows sunlight through to the north, acts as a sunshield to the south. The mesh also directs air flow towards windmills located on the roof optimizing ventilation of the building.

An energy self-sufficient building

Hypergreen is actually capable of meeting most of its own energy needs. Use is primarily made of renewable energies: earth heat exchangers, geothermal heat pumps, tempered glass, etc.
The Ductal® mesh supports some of these systems:

the wind turbines, at the top of the tower, are used to produce some of its electricity, being judiciously oriented in relation to the wind, 3000 m2 of photovoltaic cells produce additional electricity, this time using solar power, the structure of the mesh limits the building’s requirements in terms of heating and fresh air, by regulating its ventilation rainwater is collected and filtered for reuse in plumbing installations and gardens.

Well Done!!

More Information : See Lafarge Site

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