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					DuPont™ SentryGlas® Plus used for ‘Stairway to Heaven’ at Glasstec 2004
Dusseldorf, November 9, 2004 - - Visitors to Glasstec 2004 will be the first in the world to see, touch and walk on „Ganzglastreppe‟, a freestanding, laminated glass stairway. It relies on architectural laminated glass incorporating DuPont™ SentryGlas® Plus structural interlayer to deliver safety without sacrificing beauty (Hall 11, Stand H54, University of Fine Arts, Hamburg & Technical University of Hamburg-Harburg). This is the international premier of Ganzglastreppe („pure glass stairs‟), the 6-meter prototype of a generic glass and steel stairway that its inventors hope will be snapped up by commercial buyers for use in retail outlets and office building developments worldwide. Its design team, based at the University of Fine Arts, Hamburg and The Technical University of Hamburg-Harburg‟s civil engineering faculty, worked with glass laminator Flachglas Wernberg GmbH and Glassline GmbH, a German producer of point fitted support systems and stainless steel components, to develop and build the staircase. “Aesthetically, the design of Ganzglastreppe may look weightless and gravity-defying, like an architectural „Stairway to Heaven‟. Yet engineering-wise, the stresses on a drilled, point-fixed glass staircase like this are highly complicated. SentryGlas® Plus made the project possible because it is the only structural interlayer in the world that we know of to provide the necessary additional strength where bending and tear stresses are the dominant stresses,” said Josef Failer, research and development at Flachglas Wernberg. “Laminated glass incorporating SentryGlas® Plus is used for both the slim, highly-polished stair treads and the elegant balustrades of Ganzglasstreppe. In addition to the interlayer‟s structural strength, it creates a very strong bond to the metal fixings used in the stairway‟s construction and its high rigidity contributes with other factors to the overall stability and safety of Ganzglastreppe‟s patented design.”

Architectural glass containing DuPont™ SentryGlas® Plus has been used for innovative projects, big and small, throughout the world since the introduction of the structural interlayer at the end of the 1990s. Internationally, recent high profile projects have included a flat, selfsupporting laminated glass roof the size of a soccer field for Spanish energy giant Endesa in Madrid, Spain (completion: 2003 / architects: Kohn Pedersen Fox / laminator: Rioglas / structural engineers: Bellapart); state-ofthe-art, metal-in-glass architectural façade technology for the newlycompleted Shanghai Oriental Art Center, China (completion: late 2004 / architects: Paul Andreu / Aeroports de Paris /laminator: SYP) and glass stairways at Apple Computer flagship stores in New York, Chicago and San Francisco, USA (completion: 2003-4; architects: Bohlin Cywinski Jackson / laminator: Depp Glass). In Germany, Flachglas Wernberg is currently working with design teams to complete two building facades of architectural laminated glass incorporating SentryGlas® Plus; one in Hamburg and one in Cologne. “DuPont™ SentryGlas® Plus offers five times the tear strength and 100 times the stiffness of traditional interlayers for laminated glass, plus higher clarity, better edge stability and improved weathering performance. This is creating strong demand from architects, building façade engineers and laminators worldwide,” commented Luigi Robbiati, Vice President, DuPont Glass Laminating Solutions. Respected structural engineer Tim MacFarlane of the London-based structural engineering firm Dewhurst MacFarlane & Partners Ltd. has compared the introduction of SentryGlas® Plus to the invention of reinforced concrete in the 19th century, calling it: “THE engineered glass material of the 21st century.”
DuPont Glass Laminating Solutions provides materials, services and innovations for a better, safer world. The business operates within the DuPont Packaging and Industrial Polymers strategic business unit, part of DuPont's $5.3 billion Performance Materials growth platform. DuPont is a science company. Founded in 1802, DuPont puts science to work by creating sustainable solutions essential to a better, safer, healthier life for people everywhere. Operating in more than 70 countries, DuPont offers a wide range of innovative products

and services for markets including agriculture, nutrition, electronics, communications, safety and protection, home and construction, transportation and apparel.

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GLS/2004-Glasstec-04 Editorial Contact Horst Ulrich Reimer Phone: ++49 (0) 61 72/87-1297 Fax: ++49 (0) 61 72/87-1266 E-Mail: Horst-Ulrich.Reimer@dupont.com Photo 1: DuPont „Glanzglastreppe‟ („pure glass stairs‟) incorporating DuPont™ SentryGlas® Plus structural interlayer: Visitors to Glasstec 2004 are invited to see, touch and walk on this freestanding stairway of laminated glass developed by the University of Fine Arts, Hamburg & Hamburg and The Technical University of Hamburg-Harburg together with their industrial partners Flachglas Wernberg GmbH and Glassline GmbH at Hall 11, Stand H54. Photo 2: H.G. Esch Endesa headquarters, Madrid, Spain: Architects Kohn Pedersen Fox used DuPont™ SentryGlas® Plus structural interlayer for a flat, self-supporting laminated glass roof the size of a soccer field that is environmentally efficient, cutting air conditioning costs in the summer and heating costs in the winter. Aesthetically, the roof achieves transforms Endesa‟s lobby into a giant, naturally-lit atrium, recalling the Spanish patio effect that the architect, Cristina Garcia, wanted. KPF worked with structural engineer Bellapart Engineering and laminator Rioglas, both of Spain. Completion: 2003.
The use of the images (photos, slides, transparencies, etc.) granted by DuPont is authorised only in connection with the editorial material supplied by DuPont itself and cannot be used to illustrate material related to products and/or services given by companies other than DuPont.


				
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