10th Poznan Marathon

Trusses on the stadium

It was a spectacular undertaking, a unique technical operation and a breakthrough in the building of the Poznan Stadium. The operation to raise the rooftop structure of the stadium which will be one of the football arenas for the European Football Championship 2012 has begun. The northern truss was assembled over the last few months on the football pitch. To accomplish the lifting of the 1,400 tonne structures, special supplementary towers were built, upon which subsequent parts were joined to the rest of the structure. The assembled element was finished and ready for lifting on to the two ferroconcrete shanks located in the corners of Stand 4. Its weight is about 1,400 tons, it measures 175m length and will stand 18.4 metres from the ground.

In the first phase, the entire girder will be raised 1m above the ground to allow for mounting and tightening of high tensile steel cable in order to compress the truss. After compression, the northern truss will be lifted 30m above the ground and hydraulically moved to the designated ferroconcrete shanks. To lift such heavy constructions, serious technical equipment will be used: eight hydraulic actuators mounted on additional steel structures located at the ends of the girders (near the designated shanks). Swiss company Hebetec Engineering AG was called in to perform this complicated operation, and this is the first operation on such a scale in Europe.