advanced building skins 14 | 15 June 2012 - lamp.tugraz.at - Graz ...

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Figure 9: Cone 5 deflection results of the design with a finite element program
7 Pendulum Impact Test
For the laminated safety glass of the balustrade for dynamic loads in particular a pendulum impact test
was demanded. This test was carried out directly on the site for real boundary conditions. As required,
a 50 kilogram steel mass with the twin tires swung into the glass panes with a drop height of up to 900
mm (according to the standards). The test started with an impact located in the center of the glass pane
with a drop height of 450 mm. After the test was successfully passed, the height of the fall was
increased up to 900 mm. The impact located in the center of the glass causes no failure (no cracks).
Only with an impact located near the vertical edges with a drop height of 900 mm did the glass pane
on the side of the load break. The crack pattern after the pendulum impact test can be seen in the right
picture in figure 10 below. The glass opposite was still intact and only a few small pieces of broken
glass could be observed.
8 Acknowledgements
Figure 10: Glass before and after the pendulum impact test [2]
All these conically-curved laminated safety glass or insulated glass as well as the steel substructure
were produced by the company SFL Technologies in Austria. The structural development and the
structural design were made by the Research Center for Integral Construction Engineering “fibag”.
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