An elaborate structural framework combining steel and concrete was chosen to implement this vision, with several details customised specifically for the project to take advantage of the benefits of both materials.
Structures such as the huge tree-like steel columns rising up to four stories high and capable of spanning large areas were used to achieve the desired sense of space and openness. The entire apartment complex is seated on Y-shaped steel columns encased in concrete to create space for the restaurant below. One section of the building was constructed with a 25-metre overhang to make optimal use of the site geometry. Innovative solutions and constructive collaboration (not to mention columns with a self-weight up to 100 tonnes) made the vision a reality.

spannverbund GmbH was responsible for the model-based detailed planning, fabrication and installation of all the steel components in this unique project. This involved special steel columns, composite columns, floor beams, structural facade columns and much, much more. The most challenging part of the project was the cantilevered section of the building, which has six storeys and a 25-metre overhang. This was engineered using floor-to-ceiling steel supporting elements. The total order volume of steel for this project was 6650 tonnes.