| Architecture |
Point-fixed Glass in Architecture
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Fully-glazed façade systems are currently very popular with architects and investors for their aesthetic characteristics. The use of glass also permits passage of light into the building, generating a more positive atmosphere inside the building.
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 Glazed facades are not only aesthetically pleasant but also functional. Due to new technological possibilities, the glass industry has been faced with a problem regarding how to incorporate glass into building construction. Perhaps the point-fixed façade system, also known as spider glass, is the most beautiful option.
Pilkington’s point-fixed glass system, used on the Farnborough office building by Arup Associates, and Sir Norman Foster's Swindon Renault factory in the early 1980s, were probably the first applications of this type of system. These were quickly followed by other projects which used point-fixed system.
Point-fixed glass curtain walls are fixed onto the substructure only in a few points by mechanical connection. This connects glass to the support system by metal clamps and fixing bolts. The support system of fixing bolts can be a steel or aluminium structure. This provides a frameless glazing façade through a web of glass sheet sealed together from the building structure.
Different fixing effects can be achieved by the special settings with spring or press systems, which otherwise would be achieved by sealants. In aside to its aesthetic qualities, this type of glazing substitutes the usual time-consuming sealing to the sub-structure. This system can be utilised for the realisation of additional exterior cladding or the basic exterior covering of a building.
Especially used in renovation projects with thermally-insulated façades, an additional exterior glass skin can also be used. The 15 to 20 cm spacing between the two sets of skins serves for air ventilation, while the second skin not only provides additional thermal and acoustic insulation but also allows freedom of design. There are several patents of point-fixed system available on the market today. Each offer particular characteristics.
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Photos: www.sadev.com
Last review: June, 2006 |
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