New Roofs Above Gates of Frankfurt Exhibition Grounds, Germany In 2008, the German company Messe Frankfurt organized an architectural competition for planning the rede- sign of the northern and southern gates leading to the exhibition center. The target was to design a guardhouse and a roof for each gate. The building owner wished the roofs to be developed as extraordinary structures with high recognition value. The winning designer was the German architect Ingo Schrader from Berlin, who worked closely together with the German structural engineers Bollinger + Grohmann. The draft in- cluded circular roofs with a diameter of about 25 m supported by pyramid shaped columns. In August 2013, the roof constructi on was finished on the northern gate. Roof Construction for Norther

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