SONY-Center Potsdamer Platz

For the new construction of the Sony-Center at Potsdamer Platz, the soil of the 27.000 m2 ground area was explored by means of numerous exploration wells and exploratory work. For the construction of the excavation both a considerable excavation of the soil as well as a significant subsidence of groundwater were necessary (up to 13 m below groundwater level). The excavation pit was constructed as a trough construction pit with reinforced concrete slotted walls (sheet pile walls of up to three anchor layers set in the slot) and soft-gel sole. The foundation of the skyscraper finally took place as a combined pile-slab construction.

location 
Berlin
client 
BE-ST Bellevuestrasse Development GmbH & Co. KG First Real Estate KG , represented by Tishman Speyer Properties
project period 
1992-1999
scope of services 
  • tendering and supervision of geotechnical field investigations
  • geotechnical laboratory investigations
  • soil survey and foundation consultation
  • contamination survey of soil and groundwater
  • disposal concept (i.a. for tar oil damage)
  • water advisory opinion
  • hydrogeological expert report
  • object planning of the excavation with creation of a functional tender
  • geotechnical consulting and construction management on behalf of the client
  • monitoring of decontamination work during excavation pit production
  • investigation of vibrations from railway and road traffic
  • Überwachung der Dekontaminationsarbeiten während der Baugrubenherstellung
  • Untersuchung von Erschütterungen aus Bahn- und Straßenverkehr