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| Melting glass is a very energy intensive process, with process temperatures of more than 1600°C required to melt the raw materials in the furnace.
| In modern high rise building, fully unitised systems are frequently being used in construction to save time and cost. Most of the unitised system comprises of structural aluminium alloy of grade 6063 T5 or T6, with spandrel panel (shadow box) and vision glass.
| In the façade industry, glass panes have been bonded to aluminium frames with UV-resistant silicone adhesives for 40 years with almost unchanged mechanical strength.
| The paper shows that the residual stress at the surface of tempered glass panels may vary both locally and globally, i.e., stresses near the edges and corners of the panels may be considerably different from the stresses in the middle part of the panels.
| The canopies are a composite construction between both steel and glass, leaving no element without stress or structural function.
| In recent years there have been a number of sensational reports in the media about “glass cancer” and “spontaneous glass fracture”, with stories relating to “glass raining down from highrise buildings”.