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| During the past 15 years tempering of bent glass has mainly changed to horizontal methods.
| When new installations of flat tempering machines suited for architectural glass are discussed today, the option of convection technology is certain to be raised.
| The oscillating horizontal tempering furnace developed in the 1970s has been one of the most significant innovations of recent decades, above all commercially.
| Glass stairs have become increasingly common during the last few years. This is partly due to architectural fashion, but, mainly, it is a result of considerable improvements that have been made in reference to the strength of glass used for structural purposes.
| Insulating glass panes of 5.0 x 2.3 m made of twice-laminated glass 16 mm thick and weighing about 925 kg had to be installed at a height of up to 45 meters as well as 18 mm thick enamelled special glass plates for the tower facing - and this in the 9° upward-sloping tower.