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IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century

IASS Symposium 2016

SESSION: Tension & Membrane Structures

Desert city bubble roof

< Table of Contents for Tension & Membrane Structures
  • Proceedings Name: IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century
  • ISSN: (Electronic Version) 2518-6582
  • Session: Tension & Membrane Structures
  • Pages: 7
  • Title: Desert city bubble roof
  • Author(s): Santiago Guerra, Julio Gonzalez, Guillermo Capellan, Jose Maria Lastra
  • Keywords: ETFE cushions, form finding, tensegrity, cables, air
Desert City Ltd, Spanish pioneer xeriscaping company is settling its Headquarters office in San Sebastiç–£ de los Reyes, Madrid (Spain). The building is composed by two volumes connected by walkways, having the main building a 1,575 m2 (37 m x 42 m) exhibition cactus courtyard intended to be covered by a light a permeable roof. What better solution than an ETFE foil roof to provide a perfect showroom inside a bubbling greenhouse? The roof consists in a rigid steel frame with four longitudinal steel beams as Primary Structure. The void between beams is filled with ETFE cushions reinforced with Transverse Tensigrity Beams, made-up by cables and steel strut-masts due to the span, 9.5 m that those ETFE cushions must cover between the longitudinal beams. These masts, observed from the courtyard will provide a sensation in the spectators of a sea of scattered cactus spikes floating inside Cumulus Clouds.

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