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General information

  • Location address
    San Francisco of Heredia
  • Location country
    Costa rica
  • Year of construction
  • Name of the client/building owner
  • Function of building
    Shops and stores
  • Degree of enclosure
    Fully enclosed structure
  • Climatic zone
    Tropical - hot and wet all year
  • Number of layers
  • Type of application of the membrane
  • Primary function of the tensile structure
    • Daylight gains
    • Rain protection


In summer 2018, our project "Oxigeno" in Costa Rica, San José was installed and successfully connected to the ventilation unit.
The ETFE cushion of roof with a diameter of 45m covers the central place of a spacious shopping area in the district of San Francisco de Heredia. This ETFE structure is currently the largest of its kind in the world and it combines a clear architectural language with detailed connections and a highly optimized security system.
The two-layer cushion construction with a total of 1.600m² is supported by a network of cables anchored in a continuous steel ring. In case of emergency, (loss of air pressure) security valves has been installed which ensure that any accumulated water is discharged immediately. This is important to prevent water sacks that can lead to deformation of the very thin membrane.

Architect: Jerde
Client: Cuestamoras
Static: z3rch
Assembly: Lonas Lorenzo SA
Membrane Manufacture: Novum Membranes GmbH
Material: Nowofol ET 6235 Z
Cables: Jakob GmbH

Description of the environmental conditions

Material of the cover

  • Material Fabric/Foil

Main dimensions and form

  • Covered surface (m2)

Duration of use

Involved companies