• Exzenterhaus Bochum
    © Michael Wolff

Exzenterhaus Bochum

Bochum, Germany, 2012

The new office tower structure is placed on top of an existing WWII bomb shelter. Three floor packages of five office levels and one intermediate technical floor each are arranged eccentrically around a cylindrical central core shaft. Special about the project are the floor slabs with a maximum cantilever length of 4.5 m at only 25 cm slab thickness. The structural solution of the floors includes a conical spatial form in order to activate membrane action in the slabs as well as unbonded prestressing tendons around the slab edges to counteract cracking. The vertical loads of the highrise floors are founded on a newly constructed deep foundation. A nearby subway line represents an additional challenge to the geo-technical engineering.

  • Location

    Bochum, Germany

  • Architect

    Gerhard Spangenberg, Berlin

  • Cooperation

    GuD Consult Berlin (Planung der Spezialgründung/deep foundation)

  • Awards

    Deutscher Ingenieurbaupreis 2016, Engere Wahl

  • Client

    exzenterhaus bochum GmbH & Co. KG

  • Contractor

    Peter Holthausen, Düsseldorf

  • Our Scope of Work

    conceptual design, construction design

  • Height 89 m (total)
    62,50 m (new construction)
    26,50 m (existing shelter)
  • Gross floor area 6,555 m² (new construction)
  • Storeys 18 (new construction)
    6 (shelter)
  • Floor slabs cantilever max. 4.50 m,
    thickness 25 cm
  • Exzenterhaus Bochum © Michael Wolff
  • Exzenterhaus Bochum © Michael Wolff
  • Exzenterhaus Bochum © Michael Wolff

Project location

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