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Arena da Amazonia | Membrane | Brazil

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General information
Location address Manaus
Location country Brazil
Name of the client/building owner Companhia de Desenvolvimento do Estado do Amazonas
Function of building Stadia
Type of application of the membrane covering
Primary function of the tensile structure Rain protection
Sun protection
Degree of enclosure Open structure
Climatic zone Tropical - hot and wet all year
Number of layers mono-layer
Short description of the project The final stage of the FIFA World Cup™ has never before been held as close to the equator as it was in 2014. The latitude of the venue in Manaus is a mere 3 degrees south. Making use of lightweight textile architecture, the newly constructed Arena da Amazônia provides the best possible protection from the sun and optimum ventilation.
The 240m x 200m arena is located directly on the central corridor connecting the airport with the city centre. Integrated into a sport park, which also contains a Sambadrome, a track-and-field-sport complex, multi-purpose halls and a swimming centre, the arena is ideally suited to hold professional and local sports meetings and events.

Ceno Tec took only four months to erect the textile roof-façade construction covering a total area of 32.000m². The spectacular supporting structure for the 35m high textile roof took the jungle for its inspiration, while also evoking the veins on leaves. Huge cantilever beams made of steel hollow-box girders, which mutually brace each other, serve simultaneously as large roof drains, to absorb the enormous deluge of water generated by the tropical rainfall.

The membranes, manufactured and coated by Verseidag Indutex GmbH, are made from glass cloth with a tensile strength of up to 10kN/5cm. Coating the membranes with the high tech plastics 3M Dyneon PTFE achieves an elongation at break of up to 600% and protects the cloth against UV rays, humidity and other environmental effects. This high-performance material has been used in textile architecture for several decades and has proven to be extremely durable. One key advantage of the coating, particularly relevant in a tropical climate, is its almost universal resistance to environmental effects and to chemicals of all types. PTFE belongs to the fluoropolymer family and needs no plasticisers or stabilisers, which can evaporate over time leading to brittleness of the coating. This means that, even after decades of use in a tropical environment, there are no cracks in which bacteria and fungi can lodge. At the same time, the surface is so smooth that it virtually cleans itself during a rainstorm.

The overall roof-façade supporting structure consists of 252 membrane elements. The translucent membranes protect the spectators against direct solar radiation, while also pleasantly spreading out the light. Because of the complex nature of the details involved, approximately 52.000m² of material were used. A huge challenge faced by this project was the low dimensional tolerances for the 252 membrane fields. These had to be prefabricated with extremely high dimensional accuracy at the plant, because the construction site itself was no longer able to accommodate any major adjustment operations. On top of all this, the huge hauling distances into the region posed an enormous challenge in terms of logistics, while the tropical rainy season greatly hampered the assembly process.
Description of the environmental conditions In view of the hot and moist climate on the Amazon, the roof merges into a facade, which provided shade for the spectator passages and vertical developments. The natural ventilation resulting from the interaction with the façade openings should provide a pleasant micro-climate for roughly 45.000 spectators.
Misc. project details
Duration of use
Temporary or permanent structure Permanent
Material of the cover
Cable-net/Textile/Hybrid/Foil Fabric
Type (code) Verseidag premium quality glass-fibre fabric
Material coating 3M Dyneon PTFE Dispersion coating
Main dimensions and form
Covered surface (m2) 52000
Involved companies
Architects Gerkan, Marg und Partner
Engineers Schlaich, Bergermann and Partners
Contractors Ceno Membrane Technology GmbH
Suppliers Verseidag-Indutex GmbH
Editor
Editor Evi Corne
 
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