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Mainau Rothaus Seeterassen, Mainau terrace | Membrane | Germany

General information
Location address Isle of mainau - lake Constance
Location country Germany
Name of the client/building owner Mainau GmbH
Function of building Restaurants & bars
Primary function of the tensile structure Rain protection
Degree of enclosure Open structure
Climatic zone Temperate - cold winters and mild summers
Number of layers mono-layer
Short description of the project Arrangement of two independent, structurally similar membrane roofs over a restaurant building at the shoreline of lake Constance.
The both membrane roofs are put together in a special angle and covers the service- and the accommodation part of the new restaurant building.
The wave-line shape of the roofs corresponds to the environment and offer a great atmosphere of lightness to the visitors. Several curved frame tubes and one circumferential border cable are used as boundary structure for the curved membrane fields.
The membrane forces are shortcut in the upper beam structure itself, so it was possible to build the structure without any tie down cables.
Description of the environmental conditions The isle of mainau is a well-known holiday resort at lake Constance in south west Germany. The small island near Konstanz is generally known for his colourful botanical garden.
Misc. project details
Duration of use
Temporary or permanent structure Permanent
Design lifespan in years 21-30
Material of the cover
Cable-net/Textile/Hybrid/Foil Fabric
Type (code) Verseidag 18089
Material Fabric/Foil Glass fabric coated PTFE
Material coating PTFE
Weight (g/m2) 450
Main dimensions and form
Covered surface (m2) 820
Total length (m) 39
Total width (m) 13
Maximum height (m) 6
Maximum free span (m) 8
Form of entire structure Hybrid
Involved companies
Architects büro für leichtbau
Engineers büro für leichtbau
Contractors Ceno-Tec
Suppliers Ceno Tec
Contact persons Jörg Tritthardt
Editor Jörg Tritthardt
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