Dlubal customer Wirth Haker PartmbB from Freiburg, Germany was responsible for the object and structural design. The office used RFEM for the structural analysis of the lattice tower and the pulpit on the top.
Structure
The total height of the tower structure is 141 ft, and the width of the four columns is 24 ft on center at the base. The tower tapers towards the top, where the column spacing is 16.4 ft. The columns are oriented towards the center of the structure. They each have a 1.3 ft diameter at the bottom and 0.82 ft at the top.
In order to achieve high durability, block-glued chestnut timber was used for the support members. There is no approval for glued chestnut timber in outdoor locations. Therefore, tests were carried out at the Materials Testing Institute in Stuttgart, Germany, and approval was obtained per individual case. The stair treads and platforms are made of oak.
The joints are made of duplex coated steel. They were designed in a way (with dowels and key screws) so that individual support elements can be exchanged easily in the future. Effective solutions for wood protection were also fulfilled. For example, the tops of all horizontal beams and face sides are covered with sheets. In addition, all timber parts are connected with steel to provide a gap between the elements for air circulation.
| Location | Am Goetheturm 60599 Frankfurt am Main Germany |
| Owner | Grünflächenamt Frankfurt am Main frankfurt.de |
| Object and Structural Design | Wirth Haker PartmbB Beratende Ingenieure ing-wh.de |
| Assembly | Holzbau Amann GmbH www.holzbau-amann.de |
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