RF-/TOWER Loading Add-on Module for RFEM/RSTAB
Generation of Wind, Ice, and Variable Loads for Lattice Towers
The RF-/TOWER Loading add‑on module creates desing-relevant actions for RFEM/RSTAB, which can be defined as parameterized wind loads, ice loads, and variable loads.
The generation considers also the objects created in RF‑/TOWER Structure and RF‑/TOWER Equipment add‑on modules.
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Features
- Consideration of the dead load of a tower including equipment
- Wind load distribution to exposed and shaded tower faces, or user-defined distribution
- Determination of wind loads applied to tower and equipment, especially for structures prone to vibration (gust factor)
- Assignment of surface and concentrated loads to platforms
- Optional reduction of total wind load on selected objects
- Determination of ice loads for icing classes G and R with preset ice thickness and ice flag lengths of frost
- Generation of variable load cases with surface and maintenance loads
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Input
The RF-/TOWER Loading add-on module meets the requirements of EN 1991-1-4 / DIN EN 1993-3-1, DIN 1055-4, DIN 4131:1991-11, and DIN V 4131:2008-09. These standards include specifications of dead, wind, maintenance/technician and ice loads (ISO 12494 or DIN 1055-5) as well as variable loads. The standard specifications are preset or available in the libraries.
For generation of wind loads according to Eurocode, the National Annexes (NA) of the following countries are available:
DIN EN 1991-1-4 (Germany)
CSN EN 1994-1-4 (Czech Republic)
NA to CYS EN 1991-1-4 (Cyprus)
DK EN 1991-1-4 (Denmark)
NBN EN 1991-1-4 (Belgium)
NEN EN 1991-1-4 (The Netherlands)
NF EN 1991-1-4 (France)
SFS-EN 1991-1-4 (Finland)
SIST EN 1991-1-4 (Slovenia)
SR EN 1991-1-4 (Romania)
SS EN 1991-1-4 (Singapore)
SS-EN 1991-1-4 (Sweden)
STN EN 1991-1-4 (Slovakia)
UNI EN 1991-1-4 (Italy)
It is possible to generate individual load situations: You can set the wind pressure, wind direction, or ice loads manually or import them from tables. -
Generation
After generating the loads, you can check the results in clearly-arranged tables. The output contains all information about generated load cases as well as dead, wind and ice loads. All loads are sorted by structural object and tower equipment.
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Data Export
The generated loads can be easily transferred to RFEM/RSTAB in order to superimpose other load cases. All module data is included in the RFEM/RSTAB printout report.
The report contents and the extent of the results can be selected specifically for the individual designs.

Creating a User-Defined Platform for Use in RF-/TOWER Equipment
The following technical article describes the creation of a user-defined platform for use on a four-sided tower in the RF-/TOWER add-on modules.
Members of triangular and quadrilateral lattice towers are allocated automatically provided that the lattice tower has been generated in the RF-/TOWER Structure and RF-/TOWER Equipment add-on modules.
However, it is also possible to allocate the members manually. In RF-/TOWER Design, you can use the effective lengths of truss members generated in the RF-/TOWER Effective Lengths add-on module. A manual input is also possible.
According to EN 1993-3-1 and EN 50341 standards, you can specify various bracing cases and support types for members of legs and bracing.
- Which formula is used in the RF‑/TOWER Loading add-on module to calculate the first natural frequency for the determination of the structure coefficient?
- How can I control the wind load distribution on tower sides in the RF‑/TOWER Loading add-on module?
- Is it possible in RF‑/TOWER Loading to display the intermediate steps for determining the wind load, such as the fullness coefficient?
- How can I create a drilled beam in RFEM?
- In connection with the calculation according to the large deformation analysis, I get significantly smaller deformations than for the calculation according to the linear static or second-order analysis. How is this possible?
- Is it possible to control the beam steering of an antenna in RF‑/TOWER Design?
- Is it possible to use Dlubal Software for the calculation and design of 5G transmission masts, antenna masts, or towers?
- 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?
- Is it possible to design a "Kármán vortex street" behind an object in the numerical wind tunnel of RWIND Simulation?
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