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| In order to determine the safe use of fire-rated glazing in critical life safety locations, you need to know how much radiated energy passes through any given fire-rated glass product.
| 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.