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Georgia Dome | 1992 | Cable-net | United States

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General information
Location address Atlanta
Location country United States
Year of construction 1992
Name of the client/building owner Atlanta World Congress Center Authority
Function of building Stadia
Climatic zone Temperate - cold winters and mild summers
Short description of the project The Tenstar Dome structure for the Giorgia Dome incorporates a triangularized cable net with flying posts to create a tent-like appearance. The bottom of the flying posts are held back by diagonal cables (attached to the top of the next outer ring) and are tied together with cable hoops. In effect, the structure is a truss in which the bottom chord is replaced by hoops that create a true three dimensional structural configuration. With an overall dimension of 240 x 192 m, the roof is the largest such structures in the world. It is surfaced with diamond shaped panels of PTFE coated glass fiber membranes, giving its outer skin a crystalline appearance.
The roof is held by a compression ring that is a concrete box 7,9 m wide x 1,5 m high. A total of 52 columns supports the 700 m long perimeter of the ring. Stel weldments are embedded into the ring to provide the 26 attachement points for the cable dome. In order to permit the thermal expansion of the roof independent of the substructure, the compression ring sits on "teflon" bearing pads that are restrained to permit only radial movement. This arrangement permits both wind and seismic forces to be transmitted to the substructure.
Connectors for both the ridge cables and the bottom hoop cables are welments. These connectors are assembled from plates and permit continuous cables to be clamped into saddles that provide for load transfer between cable or the posts. Attachement of the posts is accomplished with pinned connections, both to make the erection simpler and to permit rotation of the joint under non-uniform load connections.
(Matthys Levy, Weidlinger Associates)

[Membrane Designs and Structures in the World, Kazuo Ishii, p180 -183]
Misc. project details
References Cable top football - Coomber M. -
A doomed building - Gene Rebeck - Fabrics & Architecture, 5/1992
The innovation of lightness - M. Levy -
The Giorgia Dome and Beyond, Achieving Lightweight - Longspan Structures - Matthys P. Levy - Spatial, Lattice and Tension Structures, IASS'94
Giorgia dome cable roof construction techniques - Wesley R. Terry, M. ASCE - Spatial, Lattice and Tension Structures, IASS'94
Giorgia Dome - Matthys Levy, Weidlinger Associates -
Stretching dome design - Steven W. Setzer -
Overdekt stadion krijgt allure van theater - Dolf Schuurmans Stekhoven -
Duration of use
Temporary or permanent structure Temporary
Convertible or mobile Convertible
Design lifespan in years 00-05
Material of the cover
Cable-net/Textile/Hybrid/Foil Cable
Material Fabric/Foil Fiberglass
Material coating PTFE
Main dimensions and form
Covered surface (m2) 35000
Total length (m) 240
Total width (m) 192
Involved companies
Architects Heery Architects & Engineers
Rosser Fabrap Intern
Engineers Weidlinger Associates
Editor
Editor Marijke Mollaert
 
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