Lookout Tower at Treetop Path, Steigerwald

Structures Analysed with Dlubal Software

  • Customer Project

Customer Project

The lookout tower, with a height of more than 131 ft, is located in Ebrach (Upper Franconia), in the heart of the Steigerwald. After the Spessart, the Steigerwald is the second-largest deciduous forest area in Bavaria. 300-year-old beeches, among the oldest in Germany, soar more than 131 feet into the sky.

Investor Bayerische Staatsforsten AöR
www.baysf.de
Architect Architectural office Josef Stöger
stoeger-koelbl.de
Planning, Structural Engineering, Construction WIEHAG GmbH
www.wiehag.com
Structural Analysis of Foundations Ing.-Büro Wolf GmbH
D-94036 Passau, Germany

Model

After walking along the 165-foot-long treetop path, visitors can use the spiral ramp to climb the tower. Once at the top, visitors can enjoy a unique view over the world cultural heritage site of Steigerwald.

Structure

The lookout tower has the shape of a truncated cone that opens outward as it increases in height. At the tower base, the outside diameter amounts to about 66 ft and at the top, to about 105 ft. The main supporting elements form 12 curved glulam timber trusses which are rotationally symmetrically arranged in an angular difference of 30°.

The outer spiral structure, made of timber, is fixed by steel cantilever beams to the timber supports. At a height of about 39 ft is a half-pace, which is supported on diagonal braces made of steel.

The viewing platform at the top consists of steel cantilever beams, protruding to the inside, and longitudinal glulam timber stringers lying in between, with planking.

The structure is stiffened by a circumferential web made of steel diagonals and ring structures.

Project Location


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  • Updated 25 February 2022

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