OAKA Olympic Stadium (2004)
The roof hangs in a giant arc of 80 m high. Each arc consists of two 3,5 m diameter tubes with a span of 304 m and support the new state-of-the-art roof. Movement of arc and roof construction weighing 8500 ton is done simultaneously using Enerpac PLC-controlled hydraulic systems with four 150 ton pull cylinders with 2 m stroke. These double-acting cylinders are attached to shoes in a sliding and guiding system pulling the arc with roof assembly step-by-step into the final position
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