Met Mast on Radstadt Tauern, Austria
Customer Project
The construction of a 328-foot-high tower at an altitude of about 6,890 ft above sea level is a particularly challenging task. A project of this type was realized in September 2020 in the area of the "Windsfeld" summit in Flachau / Flachauwinkl, Austria. The met mast is one of the tallest structures in Austria.
| Owner |
Windsfeld GmbH 5550 Radstadt Austria
www.windsfeld.at |
| Structural Design, Assembly Assistance |
m3-ZT GmbH 5342 Abersee Austria
www.m3-zt.at |
Model Parameters
Model
Dlubal customer m3-ZT GmbH performed the structural analysis and design of the tower, including the planning and calculation of the construction details. They utilized RFEM for the structural analysis and design. Additionally, the engineers from m3-ZT supported the assembly at this incredible height.
Structure and Structural Design
The 328-foot-high truss tower has a triangular floor plan and consists of tubular steel sections. The center distance between the three main columns is about 1 ft. Every 33 ft, the slender mast is fixed by steel cables. Depending on the load, the cables have a diameter between 0.47 inches and 0.75 inches.
The structure was designed for an average wind speed of vb,0 = 101.71 ft/s (according to the Central Institution for Meteorology and Geodynamics Report [ZAMG]). m3-ZT GmbH generated wind loads utilizing RWIND Simulation and imported them to the RFEM model. The civil engineering office of DI Stallinger Johann+Partner from Upper Austria carried out the verification of the structural analysis and design. This office utilized a different structural analysis and design software and applied the wind loads according to the standard (EN 1991-1-4). One result of the verification was that the support forces from wind in both models only differed by a maximum of 2%.
Industrial climbers and a helicopter helped to assemble the mast. The tower will carry out wind measurements over a period of 1.5 years.
Project Location
WindsfeldKeywords
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- How do I apply wind load on members of open structures?
- How can I create a drilled beam in RFEM?
- In connection with a calculation according to the large deformation analysis, I get significantly smaller deformations than for a calculation according to the linear static or second-order analysis. How is this possible?
- How is it possible to consider the real cross-section geometry of member elements in RWIND Simulation?
- Is it also possible to simulate an external steel structure in RWIND Simulation?
- The upper and lower flanges have to be joined by a column, but the verticals and diagonals are connected to the flanges.How do I arrange the hinges?
- Is it possible in RF‑/TOWER Loading to display the intermediate steps for determining the wind load, such as the fullness coefficient?
- The load distribution on my members looks different when using the Load Transfer surface vs. the Load Wizards. What is the reason?
- I received an error message “Surface of incompatible type... (Surface in upper plane of building story must be of ‘Load transfer’ type)” when running the calculation. What is the reason?
- My beam has a continuous lateral support and therefore lateral torsional buckling (LTB) is not a concern. How do I define the effective length?
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