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Use of step anchors BBV‐multibond in the subsoil of Düsseldorf Currently a new stormwater retention tank is constructed nearby the river Rhine in Düsseldorf with dimensions of 36 m × 20 m. The average depth of the required excavation pit is about 13 m. In the area of the working panel, the general subsoil profil consists of fluvial sand and gravel underlain by marine fine sands. The groundwater flows through the porous sandy and gravelly aquifer. The fluctuation rate of the groundwater directly corresponds with the water level of the close by river Rhine and is up to 8 m. A waterproof diaphragm wall with a thickness of 80 cm is necessary for a dry excavation and construction of the tank‐building. The patent multibond anchor system from the company BBV‐Systems GmbH is used to ensure the stability of the diaphragm wall. In comparison of the basic design, which includes up to four layers of conventional grouted anchors, only one layer of multibond anchors, placed above the in‐situ groundwater level, is needed to achieve similar stabilisation effects. Extensive performance tests were successfully carried out and documented during the execution process for the purpose of proving and verifying the load‐bearing capacity of the multibond anchors compared to conventional grouted anchors within the subsoil in Düsseldorf. [ABSTRACT FROM AUTHOR]