The „Ritterhaus“ in Halle / Saale
In a construction period of only 20 months the Ritterhaus was built by Wayss & Freytag in Halle / Saale. This modern shopping centre replaced the long-established department store of the same name which had been situated at the same place in Leipziger Straße and which was destroyed during the final days of the war.
The new shopping centre consists of three parking floors with more than 300 parking spaces, three shopping floors with 45 shops and dining facilities as well as three office floors and one residential floor.
Because of partly dilapidated neighbouring buildings, the very high groundwater level and extremely difficult ground situation, the structure was built using the top down method (see: Kö-Galerie, 1987), whereas the diaphragm walls in the basement floors had to be built as final watertight outer walls in order to maximise the usable area. To ensure adherence to the permitted construction height, it was necessary to carry out eight of ten slab floors as prestressed flat slab floors, whereas the support grid with 12.50 x 10.0 m required high prestressing.
The foundation of the 52 supports had to be built down to a depth of 40 m in some areas, since, due to the so-called „Hallenser Marktplatzverwerfung“, the bearing ground layers, which were overlaid by brown coal, medium sands and coarse clay could only be found at this depth.
Further details:
- 5,000 m² plot area
- 145,000 m³ building volume
- 41,000 m² useable area
- 6,000 m² diaphragm walls
- 20 MN maximum support loads