One of the latest thrills: Float like a bird at a skydiving center, where an artificial airstream will keep you up in the air.It is generated by a powerful turbine located in a special housing. Flying and floating takes place inside a tower.
15 m deep using support frames STB 450 and a special bracing
The skydiving center that is being built in the green outskirts of Berlin has a tower with a 15 m deep basement that is required for the airstream. After the bored piled walls had been installed, the earth was excavated and the slab base poured. The next step was pouring the walls for the three basement levels in three cycles, each 5 m high. The enormous pressure of the earth onto the bored piles walls required a special bracing when climbing the basement walls single-sided with the STB 450 support frame. Steel tubes were attached crosswise and steel beams along the bored piled walls and in the corners to stabilize and support them.
Completely smooth architectural concrete surface required
The walls‘ concrete surface must be completely smooth to avoid any swirls and turbulences in the airstream. A maximum tolerance of 10 mm was permitted per 5 m length. The panels‘ alkus facing delivered the required surface quality with each pour.
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The solution: table forms, 5.40 m long to exactly fit into the openings between the columns. Short filler pieces with rounded edges provided a perfect match to the column layout.