Haus am Domplatz
Office building
Hamburg

  • Client:
    Allianz Lebensversicherungs-AG vertreten durch Allianz Real Estate Germany GmbH
  • Architect:
    APB. Architekten, Hamburg
  • 9 upper floors including 2 attic floors
  • 2 basement floors including car park
  • Reinforced concrete structure, flat floor slabs, wide spans
  • Combined foundation:
    flat foundation and secant bored pile wall
  • GFA: c. 11,000 m²
  • Time: 2017 – 2019
  • Our scope:
    structural engineering, planning of building pit

Working at Hamburg’s most historic site.

The location of Hammaburg, the Mariendom, the Johanneum, the state library, and now a peaceful island with a direct view of St. Petri – the Domplatz square is without doubt the most historic site in the Hanseatic City of Hamburg.

Immediately neighbouring this square, and over the "Hasenmoor", a channel formed of large boulders from the era of Hammaburg, an office building with space for 400 staff is coming into being whose high-quality architecture will fit seamlessly into its environment.

Generous and well-lit workplaces will be created on nine storeys with a floor area of 32 to 47 metres. This is made possible by a slender structure consisting of flat floor slabs with wide spans and few pillars. In order to provide sufficient parking spaces, a clever solution was required to optimise the basement floors on the restricted site. For this purpose, parts of the outer walls and the complete outriggers of the building were retained via massive downward beams.

Naturally a location that is so rich in history conceals various historical surprises on the building site. The immediate adjacency to neighbouring buildings and the planned archaeological excavations demanded complex planning of the building pit. The building pit was executed by means of an overlapping bore pile wall. The massive bore pile wall is also utilised as a permanent foundation element for the building, while large parts of the load-bearing sole plate are set on shallow foundations.

Economy, efficient use of space and the right kind of foundation – the appropriate structural engineering contributes to ensuring that the Domplatz will continue to play an important role for Hamburg in the future.