Structural Frame & Truss Analysis Software RSTAB 9 | New Features

Structural Engineering Analysis & Design Software

The 3D structural frame analysis program RSTAB is the ideal tool for the design of beam, frame or truss structures consisting of steel, reinforced concrete, timber, aluminium or other materials.

With RSTAB you can easily and quickly define a structural model and then calculate the internal forces, deformations and support reactions. Various add-ons that take into account the material- and standard-specific requirements are available for the design.

  • RSTAB 9 for Frames and Trusses

New Features and Tools for Effective Work

Really Great Software

"I take this opportunity to thank you and your team for a really great software. After so many years of utilizing your software, we still see every day what your product is able to do and we really enjoy the application!

We look forward to more years together!"

Structural Analysis Models to Download

Models to Download

Select numerous structural models to utilize them for training purposes or for your projects.

In RSTAB 9, numerous new features have been implemented, which make daily work with the structural analysis software easier and more effective. On this page, we present a selection of new features.


Integration of All Add-ons

All add-ons are automatically integrated in the programs RFEM 6 and RSTAB 9. This allows the individual program parts to interact (for example, determination of the ideal overturning moment of timber beams using the "Torsional Warping [7 DOF]" add-on or consideration of staggered form-finding processes by means of the "Construction Stages Analysis [CSA]" add-on, and so on).


Output of Design Check Formulas

For designs in reinforced concrete, steel, timber, aluminum structures, and so on, the used design check formulas are displayed in detail (including a reference to the used equation from the standard). These design check formulas can also be included in the printout report.

Member and Member Set Representatives

For members and member sets with the same properties, you can define representatives for model organization, design, and documentation.

The results of the representatives can be displayed in the result tables.


Unit Stresses of Sections

For member sections, the unit stresses (related to N = 1 kiP, My = 1 kiP/ft, and so on) can be displayed in order to be able to estimate their resistance.


Imperfection Cases

Imperfection cases are used to organize imperfections. The cases allow an imperfection description from local imperfections, notional loads, initial sway via table (new), a static deformation, a buckling mode, a dynamic eigenmode, or a combination of all these types (new).


Design Situations

Design situations are used to collect the relevant load situations for design. For example, you can define a design situation for the design of different materials.


Extension of Snow and Wind Load Wizards

The following functions have been added to the snow and wind load wizards:

  • Loading of hybrid models made of members and surfaces (RFEM only)
  • Connection to the Geo-Zone Tool (depending on the global construction site definition)
  • Switching off surface sides

Modern Online Licensing System

The modern online licensing system allows licenses of RFEM, RSTAB, and other programs to be distributed all over the world and assigned to the respective users via the Dlubal Account.


Script Manager

The script manager can be used to control all input elements using JavaScript via the console or saved scripts.


Improved Printout Report

The printout report has been fundamentally revised. Among other things, the following have been optimized:

  • Quick creation due to non-modal printout report environment (parallel work in program and report possible)
  • Interactive modification of chapters as well as creation of new user-defined chapters
  • Import of PDFs, formulas, 3D graphics, and so on
  • Output of the design check formulas used in the design (including a reference to the used equation from the standard)
  • Modern printout report design

Faster Calculation

For models requiring the calculation of multiple load combinations, several solvers (one per core) are initiated in parallel. Each solver then calculates a load combination. This leads to better utilization of the cores and thus, faster calculations.


Improved Result Diagram Window

These features have been added to the result diagram window:

  • Parallel work in the result diagram window and model
  • Optional overlapping display of results (for example, several similar structural components in one image)


Webservice and API

Technology takes you further, also in your daily work with RFEM / RSTAB. The new API technology Webservice allows you to create your own desktop or web-based applications by controlling all objects included in RFEM 6 / RSTAB 9. Entire libraries and numerous functions are available to you. Thus, you can easily develop your own design checks, effective modeling of parametric structures, as well as optimization and automation processes using the programming languages Python and C#. Dlubal Software makes your work easier and more convenient. Convince yourself!


Extension of IFC Interface for Improved Open BIM Process

In addition to the import of IFC 2x3 (Coordination View & Structural Analysis View), the import and export of IFC 4 (Reference View & Structural Analysis View) is now supported.


Wind Simulation (RFEM or RSTAB Environment)

The following features have been added to RFEM and RSTAB for determining wind loads using RWIND:

  • Load wizards for generating wind load cases with different flow fields in different wind directions
  • Wind load cases with freely assignable analysis settings including a user-defined specification of the wind tunnel size and wind profile
  • Display of the wind tunnel with input wind profile and turbulence intensity profile
  • Visualization and use of the RWIND simulation results
  • Global definition of a terrain (horizontal planes, inclined plane, table)

Import of Construction Site for Load Determination

The construction site can be specified on a digital map. In addition to the address data (including the altitude), the snow load, wind speed, and seismic zones are imported automatically. These data are, in turn, used by the load wizards.

Furthermore, the map is displayed with the construction site marked in the "Model Parameters" tab.


Definition of Hotkeys

It is possible to assign hotkeys to a variety of commands. This way, frequently used commands can be executed quickly and easily with a previously assigned key combination.

By the way, this also works for your computer mouse. If it has other buttons in addition to the left, right, and middle buttons, you can assign an abbreviation to them.


Assigning Loads to New Load Case

For member loads, surface loads, and so on, you can retroactively move loads into another load case.

Mass Loads

The Mass Loads type has been added to the load catalog.

Clipping Box

In addition to the clipping plane, you can define a clipping box to hide irrelevant objects around a focal point.

Specification of Element Types

Input is simplified by specifying the element types for members, surfaces, solids, and so on (that is, member nonlinearities, member stiffnesses, design supports, and many others).


Dlubal Center

Among other things, the Dlubal Center manages the projects and model files in a central location. Detailed information and graphics facilitate the assignment of all models for quick order processing. In addition, customer data including licensed programs and add-ons, and so on, are organized in the Dlubal Center.


Global Management of All Add-ons

All add-ons are directly integrated in the program and, like the design standards for the respective materials, are managed centrally.


Global Model Parameters

You can define any global model parameters. They can also be used in the documentation.


Structured Data Navigator

The Data Navigator is clearly structured and contains assignable types for objects including a hyperlink function for quickly jumping to the assigned elements of an object.

Statistics for Sections

For all cross-sections used, statistical information such as total length, total volume, total weight, and so on is displayed.


New Section Distribution Types for Members

Seven new cross-section distribution types are available for members (including arrangement function for aligning to a straight edge):

  • Tapered at both sides
  • Tapered at start of member
  • Tapered at end of member
  • Saddle
  • Offset at both sides
  • Offset at start of member
  • Offset at end of member

Cross-Section Library with Short Text Search

A short text search has been added to the cross-section library in order to find a desired cross-section or cross-section series even more quickly.


Structure Modification Object

With the new structure modification object, you can modify or deactivate stiffnesses, nonlinearities, and objects in a clear and load case-dependent manner.

Result Combinations Using Parenthesis Terms

When creating result combinations, it is now also possible to use parenthesized terms.

Individual Global Calculation Parameters for Load Cases and Load Combinations

Load cases and load combinations can now be provided with individual global calculation parameters using the new structural analysis setting.

Combination Wizard Based on Automatic or Semi-Automatic Generation Conforming to Standards

The new combination wizards fill the design situations with load or result combinations on the basis of an automatic or semi-automatic generation conforming to the standards.

Improved Load Wizard

New functions for locking new members, smoothing occurring concentrated loads, and considering eccentricities and cross-section distribution have been added to the load wizard.

Determination of Member Loads from Surface Loads by Specifying Cells and Surfaces

In the load wizard, it is now possible to determine member loads from area loads by defining surfaces (using corner nodes) and cells.

Global Organization of User-Defined Coordinate Systems

The user-defined coordinate systems for input and analysis purposes are now organized globally under the guide objects.

Organization of Different Object Snaps

Now, you can define several object snaps for different operating tasks.

Object Selection as New Guide Object

The new guide object "Object Selection" allows for generic filtering of:
  • Basic objects
  • Types for nodes
  • Types for lines
  • Types for surfaces
  • Load wizards
  • Loads
  • Guide objects
The object selection provides many interactive application possibilities at various program locations.

Tabular Reference Description for Dimension Lines

The reference descriptions of incremental dimension lines are now given in tabular form for a better overview.

Implementation of SAF Format

A new file format for structural design, Structural Analysis Format (SAF), is now also supported. Both import and export are possible in RFEM 6 and RSTAB 9. SAF is a file format based on MS Excel, which is intended to facilitate the exchange of structural analysis models between different software applications.



The new ViewCube in the graphic provides an intuitive selection of the correct model projection.

Tabular Unit Settings

It is now possible to change certain units in the form of a tabular user interface.

New File Formats for Export

It is possible to export the RFEM and RSTAB models in XML, SAF, and VTK (results from RWIND).

New Local Axis Definition for Members

A new local axis specification (y upwards) has been added for the Anglo-American region.

New Graphic Printout Option with Preview Image

The new graphic printout dialog box now includes:
  • a library-controlled mass print function for all program graphics,
  • a user-defined print area selection,
  • a 3D function for later 3D functionalities in the final PDF,
  • an automatic separation of images for scale prints and a function for displaying an overview image.

Creation of Parts Lists

It is now possible to create cross-section and material-based parts lists.

Using Log Files

The new program generation RFEM 6 and RSTAB 9 allows for sending log files to our company via online registration. This allows us to better analyze and improve our programs for your applications. By default, this setting is activated under the program options. You can rescind your consent in the programs at any time.


List Box for Organized Interactive Table Structure

The tables are now sorted in two list boxes, which allows you to easily navigate the various input and result tables.

Result Table Manager

To better display the results, the displayed columns and rows can be reduced with the new Result Table Manager.

Material Type Control

The material type of a material clearly defines the design-relevant properties.

Improved Overview in Material Library

The material series are now listed in the material library. It is also possible to find the desired material in the library directly, using the free text search function.



  • Fast modeling thanks to sophisticated input technology
  • One program for all types of structures from single-span girders to complex 3D beam structures
  • Fast calculation using the multiprocessor technology
  • Support of national and international standards
  • Quick generation of a professional-looking printout report
  • Automatic generation of wind loads using the integrated CFD wind simulation (RWIND required)
  • API via web service
  • Globally recognized program with over 100,000 users
  • Professional customer support provided by more than 20 support engineers

Manuals for RSTAB 9



2,850.00 EUR

The prices apply to the use of the software in all countries.

Online Training | English

Eurocode 5 | Timber Structures According to DIN EN 1995-1-1

Online Training 8 December 2022 9:00 AM - 1:00 PM CET

Online Training | English

Eurocode 3 | Steel Structures According to DIN EN 1993-1-1

Online Training 2 March 2023 9:00 AM - 1:00 PM CET

Online Training | English

Eurocode 5 | Timber Structures According to DIN EN 1995-1-1

Online Training 16 March 2023 9:00 AM - 1:00 PM CET

Online Training | English

Eurocode 3 | Steel Structures According to DIN EN 1993-1-1

Online Training 17 November 2022 9:00 AM - 1:00 PM CET

Tool-Based Structural Design Optimization in RFEM 6

Tool-Based Structural Design Optimization in RFEM 6

Webinar 20 October 2022 2:00 PM - 3:00 PM CEST

Seismic Design According to EC 8 in RFEM 6 and RSTAB 9

Seismic Design According to Eurocode 8 in RFEM 6 and RSTAB 9

Webinar 11 October 2022 2:00 PM - 3:00 PM CEST

Design Aluminum Structures \n in RFEM 6 and RSTAB 9

Model and Design Aluminum Structures in RFEM 6 and RSTAB 9

Webinar 15 September 2022 2:00 PM - 3:00 PM CEST

Online Training | English

Eurocode 5 | Timber Structures According to DIN EN 1995-1-1

Online Training 15 September 2022 9:00 AM - 1:00 PM CEST

Online Training | English

Eurocode 3 | Steel Structures According to DIN EN 1993-1-1

Online Training 8 September 2022 9:00 AM - 1:00 PM CEST

Timber Structure Design in RFEM 6 and RSTAB 9

Model and Design Timber Structures in RFEM 6 and RSTAB 9

Webinar 17 August 2022 10:00 AM - 11:00 AM CEST

Automatic Creation of Load Combinations in RFEM 6

Automatic Creation of Load Combinations in RFEM 6 and RSTAB 9

Webinar 21 June 2022 2:00 PM - 3:00 PM CEST

Online Training | English

Eurocode 5 | Timber Structures According to DIN EN 1995-1-1

Online Training 15 June 2022 8:30 AM - 12:30 PM CEST

3D Model of the Vocational School in RFEM (© Eggers Tragwerksplanung GmbH)

Special Solutions

First, the two-part Optimization & Costs / CO2 Emission Estimation add-on finds suitable parameters for parameterized models and blocks via the artificial intelligence (AI) technique of particle swarm optimization (PSO) for compliance with common optimization criteria. Second, this add-on estimates the model costs or CO2 emissions by specifying unit costs or emissions per material definition for the structural model.

Price of First License
1,650.00 EUR