Taichung Echo Wind Tower Project in Taiwan Print
Written by Manal Rachdi   
Monday, 29 November 2010 08:24

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Overseeing the Taichung basin, the Taiwan Tower is the observatory of the central Taiwan ecosystem ranging from the Central Mountain Range to the South China sea.
The tower's envelope is composed of 2 million suspended thin metal leaves that tilt up against the wind, which operates 64 internal helicoidal wind turbines generating enough energy to make the building fully sustainable.

The facade shows patterns of air flows as a monumental expression of the natural context and its immediate climatic conditions. Its skin symbolizes the cohesion of the surrounding habitat while the evolving winds provide transformations of its form.

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Edited by Lynda Waggoner


The tower rises 350 meters high at a 2 degree inclination. This slight obliquity allows the metal leaves' polished surfaces to reflect Taichung to itself.

Approaching visitors seize in these reflections their city at different scales and from contrasting viewpoints. At night, the tower turns into a 2 million pixel LED vertical screen with infinite possibilities to provide dynamic digital visuals. An iso-static tripod emerges from within the reservoir comprising of a lobby, an office block and a singular mirrored shape. The tower floats above ground fitted on top of the tripod.
OFF-Architecture-TAICHUNG-03OFF-Architecture-TAICHUNG-02The Museum of the Taichung City Development is suspended under the tripod and exhibits a model of the Taichung metropolis composed of key historical urban fragments, architectural landmarks and views of the cityscape. It hosts group and individual educational programs about the city, its achievements and digital projections on the sky scrapping screen. The achieved technology acts not only as a monumental object but functions as an instrument to promote cultural ventures and moreover democracy.

The archetypal perspective is flipped into a new contemporary view of space organization illustrated by the array of a visitor's viewpoints. The tower strongly displays in its design the vibrancy of the Taiwanese democratic identity and echoes the technological proficiency that supports its conscious and sustainable urban development of the central metropolis within the central Taiwanese ecosystem.


The mast is made out of a tubular open steel structure and suspended at approximately half its height. A series of internal ribs stabilize the structure around its slender axis and, together with the cables, allow to reduce the structural depth to a minimum.

A sufficient structural depth in cross direction allow the mast to be slightly inclined and does not suspension cables. Walls and ribs are designed as trusses with rectangular tubular members. The cables are inclined by approximately 60 degrees in order to limit the footprint.
OFF-Architecture-TAICHUNG-12At its base, the mast rests on three inclined plates that are envisaged to be realized as trussed steel plates. The steel frame structures of mast and plates are interlaced to allow transferring the forces at coinciding nodes.

The base structure is made of concrete. Movement joints separate the structure from parking deck and the foundations of the mast and the cable ends. Tension and compression piles are currently envisaged as foundation for the cable ends and the base of the mast. Being extremely light weight and slender, the structure requires damping to control its oscillation under wind load and seismic events. It is foreseen to provide dampers at the cable ends and a counter weight at the top end of the mast.
OFF-Architecture-TAICHUNG-11Project Credits:

Designer: OFF Architecture, Philippe Rizzotti architectes, Samuel Nageotte.

Team: Manal Rachdi, Tanguy Vermet, Ute Rinnebach, Philippe Rizzotti, Samuel Nageotte, Marina Daviu Castilla, Clement Gerard, Guy Reziciner, Felix weber, Eric Dumarché, Sebatien Boublil.

Location: Taichung City.

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Last Updated on Monday, 29 November 2010 09:10