Customer: Universale Bau GmbH, Vienna
Construction period: 02.2007 – 12.2007
Location: 2. district, Vienna
Country: Austria

The VIERTEL ZWEI will be on a ground of about 40.000 m² at Vorgartenstraße/Trabrennstraße in the second Vienna municipal district. This new district will hold attractive offices, a hotel, restaurants and small shops. They will be integrated into a completely green concept with its own lake.

GPS will build an up to 12 m deep excavation pit for the office tower HOCH ZWEI and the office building PLUS ZWEI. A water-tight treated concrete walling will be constructed around this pit as the bottom of the excavation pit is 9 m below ground-water level. The horizontal loads will be distributed by prestressed temporary anchors. These have been completely removed on completion of construction. Nine vertical filter wells have been drills up to 27 m in depth to lower the ground water level.

Foundation engineering measurements
6.500 m2 treated walling, diameter 80 cm and 100 cm
175 prestressed stranded anchors, can be completely removed with the GPS shock method
Water management
9 vertical filter wells, depth up to 27 m, pump rate up to 80 l/sec.
360 screwed in-situ concrete piles diameter 65 cm and 55 cm