Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Thinner, lighter and safer laminated glass façade for Portuguese office building thanks to DuPont™ SentryGlas® interlayer

21.07.2010
The street-facing façade of a newly-built office building belonging to Bouygues Imobiliária in Lisbon, Portugal, is formed by laminated glass panels made with strong and stiff DuPont™ SentryGlas® interlayer.

The ability of SentryGlas® to create highly-resilient laminates with excellent post-breakage performance has allowed the façade engineering specialist Facal, of Santo Tirso (Portugal), to create a comparatively thinner, lighter glazing that is able to cost-effectively meet building and safety requirements and requires comparatively small point fixtures to hold the panels securely in place.


Photo: Facal
The façade (left-hand side of shot) over the entrance of a newly-built office building belonging to Bouygues Imobiliária in Lisbon, Portugal, is formed by laminated glass panels made with strong and stiff DuPont™ SentryGlas® interlayers.

Facal, a company recognized nationally and internationally for its pursuit of technical innovation in façade engineering, developed and installed the laminated glass façade for the Explorer building at the Parque das Nações in Lisbon. Measuring 20 meters high and 10 meters wide, the façade consists of approximately 40 laminated glass panels produced by the glazing specialists Vicer of Maia, Portugal. According to initial calculations, a laminate construction using a standard polyvinyl butyral (PVB) interlayer would require the two glass sheets to be each 12 mm thick in order to provide the required long-term resistance to the specified wind loads. Moreover, it would require a comparatively expensive supporting framework with very large fixtures would be required to withstand the weight of the panes and the additional wind forces.

However, because SentryGlas® interlayers are five times stronger and approximately 100 times stiffer than PVB, a thinner glass construction can be used to achieve the same load-bearing capacity of the PVB alternative. For Facal this meant that, by using a laminate construction consisting of 10 mm strengthened glass + 1.52 mm SentryGlas® + 8mm tempered glass, they were able to reduce the thickness and the weight of the panels by 25 percent. This in turn meant that the point fixing system developed by Facal to hold the panels securely in place could be made smaller, and therefore less obtrusive, than those required for the equivalent glass laminated glass panels made with a PVB interlayer. These combined benefits also result in a more cost-effective glazing solution with regard to the façade’s production and installation.

The excellent post-breakage behavior of laminated safety glass made with SentryGlas® was a further critical safety factor in the selection of the DuPont interlayer for the Portuguese façade, as a spokesperson at Facal explains: “Our primary concern was that of providing increased safety and ongoing protection in case of glass breakage and fallout. This is of particular significance in Lisbon, a city susceptible to seismic movements. With some of the glass panels as high as 20 meters above street level, it is essential that the integrity of the glass façade is retained and there is no risk of fragments of glass falling on to passers-by. Thanks to its excellent post-breakage performance, and the fact that the glass fragments remain adhered to the interlayer, this is assured with SentryGlas®.” Further benefits of SentryGlas® interlayer include its high, crystal-clear transparency, its virtually universal resistance to yellowing and excellent edge stability.

DuPont Glass Laminating Solutions provides materials, services and innovations to makers and specifiers of laminated glass. It helps create a better world by improving home protection and automotive safety, and enabling design of stronger, more energy-efficient buildings that let in more natural light.

DuPont is a science-based products and services 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 and food; building and construction; communications; and transportation.

The DuPont Oval, DuPont™ and SentryGlas® are registered trademarks or trademarks of E. I. du Pont de Nemours and Company or its affiliates.

GLS-EU-2010-02

Editorial Contact:
Birgit Radlinger
Tel.: +49 (0) 61 02/18-2638
Fax: +49 (0) 61 02/18-1318
birgit.radlinger@dupont.com

Birgit Radlinger | DuPont
Further information:
http://www.dupont.com

More articles from Architecture and Construction:

nachricht New, forward-looking report outlines research path to sustainable cities
24.01.2018 | National Science Foundation

nachricht Magnetic liquids improve energy efficiency of buildings
16.01.2018 | Friedrich-Schiller-Universität Jena

All articles from Architecture and Construction >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: In best circles: First integrated circuit from self-assembled polymer

For the first time, a team of researchers at the Max-Planck Institute (MPI) for Polymer Research in Mainz, Germany, has succeeded in making an integrated circuit (IC) from just a monolayer of a semiconducting polymer via a bottom-up, self-assembly approach.

In the self-assembly process, the semiconducting polymer arranges itself into an ordered monolayer in a transistor. The transistors are binary switches used...

Im Focus: Demonstration of a single molecule piezoelectric effect

Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale

Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...

Im Focus: Hybrid optics bring color imaging using ultrathin metalenses into focus

For photographers and scientists, lenses are lifesavers. They reflect and refract light, making possible the imaging systems that drive discovery through the microscope and preserve history through cameras.

But today's glass-based lenses are bulky and resist miniaturization. Next-generation technologies, such as ultrathin cameras or tiny microscopes, require...

Im Focus: Stem cell divisions in the adult brain seen for the first time

Scientists from the University of Zurich have succeeded for the first time in tracking individual stem cells and their neuronal progeny over months within the intact adult brain. This study sheds light on how new neurons are produced throughout life.

The generation of new nerve cells was once thought to taper off at the end of embryonic development. However, recent research has shown that the adult brain...

Im Focus: Interference as a new method for cooling quantum devices

Theoretical physicists propose to use negative interference to control heat flow in quantum devices. Study published in Physical Review Letters

Quantum computer parts are sensitive and need to be cooled to very low temperatures. Their tiny size makes them particularly susceptible to a temperature...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

2nd International Conference on High Temperature Shape Memory Alloys (HTSMAs)

15.02.2018 | Event News

Aachen DC Grid Summit 2018

13.02.2018 | Event News

How Global Climate Policy Can Learn from the Energy Transition

12.02.2018 | Event News

 
Latest News

Contacting the molecular world through graphene nanoribbons

19.02.2018 | Materials Sciences

When Proteins Shake Hands

19.02.2018 | Materials Sciences

Cells communicate in a dynamic code

19.02.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>