In memoriam: Helmut Jahn

The fabric-wrapped ThyssenKrupp test tower in Rottweil, Germany, is used to test and certify high-speed elevators, reducing development time of skyscrapers. The exterior wrap of the tower contributes to the overall structural performance and improves the durability of the concrete portion of the tower. Photo: Taiyo Europe GmbH. Celebrated architect Helmut Jahn died on Saturday, [...]