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The building of the Kreissparkasse (Bank) at Heinsberg has one of the first biaxial curved cable facades in the world. Double curved structures can be constructed using two cables run in different directions. The cable construction can not only absorb loads from wind forces, fluctuating temperatures, pretension and snow, it can also carry its own weight. Solar control glass, Solar lux polaris 65/36, with Ug = 1.1 W/m2 K was used.