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Why Dlubal Software?


  • More than 45,000 users in 95 countries
  • One software package for all application areas
  • Free support provided by experienced engineers
  • Short learning time and intuitive handling
  • Excellent price/performance ratio
  • Flexible modular concept, extensible according to your needs
  • Scalable license system with single and network licenses
  • Proven software used in many well-known projects


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Wind Simulation & Wind Load Generation

With the stand-alone program RWIND Simulation, wind flows around simple or complex structures can be simulated by means of a digital wind tunnel.

The generated wind loads acting on these objects can be imported to RFEM or RSTAB.

  • RF-/TIMBER Pro | Features

    • Full integration in RFEM/RSTAB with import of all relevant information and internal forces
    • For design according to EN 1995-1-1, the following National Annexes are available:
      • Deutschland DIN EN 1995-1-1/NA:2013-08 (Germany)
      • ÖNORM B 1995-1-1:2015-06 (Austria)
      • NBN EN 1995-1-1/ANB:2012-07 (Belgium)
      • BDS EN 1995-1-1/NA:2012-02 (Bulgaria)
      • DK EN 1995-1-1/NA:2011-12 (Denmark)
      • SFS EN 1995-1-1/NA:2007-11 (Finland)
      • NF EN 1995-1-1/NA:2010-05 (France)
      • Ireland I.S. EN 1995-1-1/NA:2010-03 (Ireland)
      • UNI EN 1995-1-1/NA:2010-09 (Italy)
      • Latvia LVS EN 1995-1-1/NA:2012-05 (Latvia)
      • LST EN 1995-1-1/NA:2011-10 (Lithuania)
      • LU EN 1995-1-1/NA:2011-09 (Luxembourg)
      • NEN EN 1995-1-1/NB:2007-11 (Netherlands)
      • Norway NS EN 1995-1-1/NA:2010-05 (Norway)
      • PN EN 1995-1-1/NA:2010-09 (Poland)
      • Portugal NP EN 1995-1-1 (Portugal)
      • SR EN 1995-1-1/NB:2008-03 (Romania)
      • SS EN 1995-1-1 (Sweden)
      • STN EN 1995-1-1/NA:2008-12 (Slovakia)
      • SIST EN 1995-1-1/A101:2006-3 (Slovenia)
      • UNE EN 1995-1-1/AN:2016-04 (Spain)
      • CSN EN 1995-1-1/NA:2007-09 (Czech Republic)
      • BS EN 1995-1-1/NA:2009-10 (United Kingdom)
      • CYS EN 1995-1-1/NA:2011-02 (Cyprus)
    • Extensive material library in compliance with the EN, SIA, and DIN standards
    • Design of circular, rectangular, and user-defined composite cross-sections (also hybrids)
    • Specific classification of a structure in service classes (SECL) and actions in load duration classes (LDC)
    • Design of members and sets of members
    • Stability analysis according to the Equivalent Member Method or the second-order analysis
    • Determination of governing internal forces
    • Icon informing about successful or failed design
    • Visualization of the design criterion on RFEM/RSTAB model
    • Automatic cross-section optimization
    • Parts lists and quantity surveying
    • Data export to MS Excel
    • Free setting of fire resistance classes and charring rates as well as free selection of charring sides
    • Fire resistance designs in the selected standard according to:
      • European Union EN 1995-1-2
      • Switzerland SIA 265:2012 + SIA 265-C1:2012
      • Deutschland DIN 4102-22:2004
    • Import of buckling lengths from the RF-STABILITY/RSBUCK add-on module
    • Design of tapered members according to the previously defined cut-to-grain angle
    • Ridge design and analysis of transversal tension stresses for defined ridges
    • Design of curved members and sets of members
  • RF-/TIMBER Pro | Input

    After opening the module, it is necessary to select members or sets of members, load cases, load or result combinations for the ultimate and serviceability limit state designs and for fire resistance design. The materials from RFEM/RSTAB are preset and can be adjusted in RF-/TIMBER Pro. Material properties listed in the respective standard are included in the material library.

    After the cross-section check, the module determines the load duration classes (LDC) and the service classes (SECL). It is possible to assign them to the selected load cases and members.

    Combined cross-sections may consist of various materials. The RF-/TIMBER Pro add-on module performs designs considering the shifted neutral axis (in the case of semi-rigid cross-sections). The deformation analysis requires the reference lengths of the relevant members and sets of members. Furthermore, you can define a specific direction of deflection, precamber, and beam type.

  • RF-/TIMBER Pro | Design

    The cross-section resistance design analyzes tension and compression along the grain, bending, bending and tension/compression as well as the strength in shear due to shear force with and without torsion. Designs proceed at the level of design stress values.

    The design of structural components at risk of buckling or lateral-torsional buckling is performed according to the Equivalent Member Method and considers the systematic axial compression, bending with and without compressive force as well as bending and tension. Deflection of inner spans and cantilevers is determined in characteristic and quasi-permanent design situations.

    Separate design cases allow for a flexible and stability analysis of members, sets of members, and loads. In the case of tapered members, the cut-to-grain angle is considered in the bending tension and bending compression area. If there is a ridge defined, the module performs the ridge design additionally.

  • RF-/TIMBER Pro | Results

    After the calculation, the module displays results in clearly arranged result tables. Each intermediate value is listed, making the designs transparent. The results are listed by load case, cross-section, member, and set of members.

    If the analysis fails, the relevant cross-sections can be modified in an optimization process. It is also possible to transfer the optimized cross-sections to RFEM/RSTAB to perform a new calculation.

    Design ratio is represented with different colors in the RFEM/RSTAB model. In this way, you can quickly recognize critical or oversized areas of the cross-section. Result diagrams of members and sets of members enable targeted evaluation.

    In addition to input and result data including design details shown in tables, you can add any graphic into the printout report. In this way, a comprehensible and clearly arranged documentation is guaranteed.

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Do you have questions or need advice?
Contact our free e-mail, chat, or forum support or find various suggested solutions and useful tips on our FAQ page.

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First Steps

First steps

We provide hints and tips to help you get started with the main programs RFEM and RSTAB.

Powerful and Capable Software

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Great Features

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Knowledge Base

In addition to our technical support (e.g. via chat), you’ll find resources on our website that may help you with your design using Dlubal Software.