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Filigree Façade Constructions
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California Academy of Sciences, San Francisco (USA)
Design Architect: Renzo Piano Building Workshop, Paris
Executive Architect: Chong Partners Architecture, San Francisco, CA
The California Academy of Sciences is one of the largest Natural History Museum in the world. They will reopen their new facilities in Golden Gate Park, San Francisco in 2008.
It is the only museum of its kind to house both an aquarium and a planetarium and will now also have a rainforest exhibition in their new house.
Wall System (4) Piazza Skylight and Circular Skylights:
the Piazza, the central inner courtyard of the building, is roofed by a partly open skylight. Via a pre-tensioned network of stainless steel rods and struts the curved contour of the remaining landscape roof area is continued in this free zone.
This highly sophisticated steel construction was structurally designed by Ove ARUP with construction and istallation further developed by Gartner.
As a result of the geometry, the network structure has a multitude of building components which could only be captured with considerable complexity using a 3D-CAD system. The assembly of the net had to take place logistically controlled. The pre-tensioning process had to be constantly monitored through force and elongation of the upper and lower chord of each truss in order to reach final position of the given glass roof geometry.
The free, not glazed area of the Piazza Skylight can be sheltered by actuated rain screens. Sun and acoustic shades integrated into the network system will create comfort for the Piazza area which is to be used as a meeting place for official events.
In addition the landscape roof had 120 no. customized circular skylights (diameter approx. 1500 mm) which had to be manufactured and installed.
Completion in 2008
Photograph: Chuck Choi Architectural Photography, Brooklyn, NY
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E.ON Energie AG München (Germany)
Erneuerung der Piazzaüberdachung
Architect: ADAM Architekten, München
The corporate headquarters of E.ON Energy Incorporated is situated in the city centre of Munich in close proximity to the Königsplatz. The built-up area is located at Briennerstraße.
The roofed hall is closed in by buildings on all sides and does not have a direct access to the public streets. In the course of reconstruction of the hall to of public assembly place the existing laminated roof (950 m2) will be replaced by a glass-shed roof-construction.
The new steel-glass shed roof construction is supported by existing steel beams.
The main beams are executed as welded, triangular steel beams spanning approx. 2 to 28 m with a grid distance of 3.70 m to each other. With increasing distance between the supports the steel girders are provided with an additional bracing. The roof slopes at 1.72 deg.
The grid dimensions of the new shed roof construction are 3.7 x 1.885 m, the resulting maximum glass dimensions are usually 3124 x 1851 mm. The following material was used for the shed framing units considering that LED's are integrated in the steel construction: Standard steel hollow sections 60 x 60 x 5 mm, trims made of steel sheet and specially welded sleeves made of steel tubes 100 x 60 x 5 mm with welded U-profiles. Additional bracings were required as the new shed roof construction assumes the function of a structural, horizontal bracing.
Glazing: Double glazed units, accessible, 10 mm toughened glass, 16 mm cavity, lamited glass 2 x 8 mm heat strenthend with SI foil, high performance coating Ipasol neutral 73/39.
Finish: Steel wet painted RAL 9006, aluminium powder coated RAL 9006.
Additionally supplied: Horizontal shading system with Soltis-texture, stainless steel channels, gutter heating, deflection surveying system for beams.
Speciality: Installation was carried out from an accessible network serving as working platform while work was in concurrent
operation.
Completion in 2008
Photograph: Stephan Liebl, Dillingen
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LAC - Lufthansa Aviation Center Deutsche Lufthansa AG, Frankfurt am Main (Germany)
Architects and Planning: Ingenhoven Architekten, Düsseldorf
Rope cladding: A longitudinally heat strengthened curved beam below the lattice roof planking forms the top of the rope cladding that is closing to the atrium. A double rope system made of toughened, solid, galvanized, open steel ropes and cast stainless steel brackets supports the point fixed double glazing and the electromotive openable integrated glazed louvre units. Self-supported portal frames integrated in the tensioning system allow the access from outside into the Atria via integrated doors.
Glazing: Point-fixed Low-E-coated double glazing.
Finish: Solid stainless steel precision casting, bead blast, galvanized steel.
Photograph: Gardin&Mazzoli
Completion: 2005
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