Future architecture on the Mediaspree

"The timely completion of this large and complex excavation within six months is a remarkable achievement by the specialised civil engineering team, which has also been expressly praised by the client. The first foundations and floor slabs will be concreted before the end of the year, and in the best sense of the word, nothing will remain to be seen of the excavation pit," emphasises Andreas Kimling, Regional Manager Building Construction East.

The architecture of Forty4 interprets the traditional, urban perimeter block development in a modern and contemporary way. Differently designed façades give the ensemble in Berlin-Friedrichshain a lively appearance. Two six-storey office buildings offer 21,300 m² of flexible workspaces, complemented by a design hotel and an apartment building. Sustainability is an integral part of the concept. For this holistic approach, Forty4, planned by L&L Immobilien GmbH's project development team, was awarded the DGNB pre-certificate in platinum.

Watertight excavation pit made of sheet piling and bored pile wall

The construction trough consists of a three-sided, 212 m long, back-anchored sheet piling enclosure and an approximately 1,000 square metre overlapping bored pile wall. To protect against rising groundwater, a water-impermeable sealing base measuring around 3,500 m² was created using the jet grouting method (DSV). The bored pile wall was reinforced using a head beam and a construction consisting of dead man's beams and reaction piles. The residual water remaining in the trough was drained in a controlled manner using a drainage system.