In 2019, the developer EDGE laid the foundation for the new Berlin headquarters of the energy company Vattenfall according to the designs of the renowned architectural firm TCHOBAN VOSS Architekten, thus creating new structures in forward-looking urban sustainability. Located directly at the ICE railway station Suedkreuz Berlin, the new office building is designed in the form of a modular timber hybrid building as an open ecosystem with nature-based elements and has a total of eight storeys as well as a spacious, roofed atrium.

The atrium's imposing roof structure, designed as a support grid with a roof area of over 1,500 square metres, is a mixed construction consisting of a timber-steel framework from a structural point of view. In close cooperation with the Allgäu-based family business Biedenkapp Stahlbau and the ETFE foil specialist Temme Obermeier, HESS TIMBER co-developed, produced and supplied the timber components for the roof structure. The main girders of the 2-axis load-bearing timber-steel truss have a maximum length of 40 metres. The compression chords used in the truss construction were designed as glulam beams of strength class GL 32 h and are additionally joined at the nodes and connected to the adjacent steel construction by multi-cut bar dowel connections.