Forestry Office Building Made of Stacked Multi-Frame Structures in Freiburg, Germany

Sustainability was an important guiding principle for the new building project. The four-story forestry office building stands on a reinforced concrete base. The three stories above were constructed using timber structures. Hardwood from the region was used for the supporting structure.

The exterior is dominated by a facade made of glass and timber. This renewable raw material is also the main building material used in the interior. Timber was used wherever possible, including for the elevator shaft. The column-free corner windows not only allow for a generous view, but also make the interior appear larger.

The unusual supporting structure of the “Forest Tower” is particularly noteworthy. The almost square building is braced by the exterior walls, which act as rigid multi-frame structures.

This allowed for a strikingly column-free design of the building, requiring only six columns in the interior for vertical load transfer. This small number of columns contributed significantly to the open floor plan. Very slender BauBuchen ribbed slabs are supported on the columns.

This exciting customer project was designed by Dlubal customer Wirth Haker engineering office using the RFEM software.