A new weir is being built in Jettenbach am Inn in Bavaria. Assembly manager Heinz Prattes and his work colleagues bring a 55-ton steel segment into position on the construction site. The colossus is then flanged to the supporting struts. In Hamburg-Altona, a huge drill head is eating its way through the subsoil in a mega-project costing around 550 million euros. There, the Diebsteich S-Bahn station is being converted into a long-distance train station. And in the grain silos of a former cornflakes factory in Bremen, floor ceilings are being installed for a hotel.