Frame Analysis Software RSTAB 9 | Modeling

Structural Engineering Analysis & Design Software

Are you still looking for a frame analysis program to model your frame and truss structures as easily as possible? Use the successful structural frame & truss analysis software RSTAB for your design of beam, frame, or truss structures consisting of steel, reinforced concrete, timber, aluminum, or other materials.

With RSTAB, you can easily and quickly define a structural model and then calculate the internal forces, deformations, and support reactions. There are design add-ons at your side that you can use to consider the material- and standard-specific requirements.

  • RSTAB 9 for Frames and Trusses

Useful Tools for Fast Generation of Structures

The Best Structural Modeling Program

"We are dealing with Structural and Seismic Engineering since 1998. Dlubal Software is, in our experience, the best structural modeling program on the market. We recommend it to all those who need to deal with special and daily cases."

Easy Modeling of Structures

“I really enjoy working with Dlubal Software programs. The structure generation and modification can proceed smoothly:

  • Manageability of functions in the menu and movability in space
  • Data transparency: checks, options to modify and transfer data

I am happy that I switched over to Dlubal Software!”

Select any of the useful auxiliary functions and tools that make the modeling easier for you. This facilitates the generation of snow and wind loads, for example. Furthermore, you can consider member and hinge nonlinearities (yielding, tearing, slippage, and so on), as well as couplings or member eccentricities.


Cross-Section and Material Libraries Including Favorites

Discover the extensive cross-section and material libraries. They facilitate you the modeling of plate and beam structures. You can filter these databases and expand them with user-defined entries. You can also easily import and analyze special cross-sections from RSECTION.

Easy Creation of Views and Visibilities

A clear display is a prerequisite for your efficient and fast work with the program. Select user-defined views from different angles to facilitate the result evaluation. Using "visibilities", you can also divide the model into user-defined and generated partial views that fulfill certain criteria. It is thus possible, for example, to activate only the surfaces of a specific material or members with a particular cross-section for the display.

Easy Model Input

There are many options available for simple input and modeling. Your model is entered as a 1D, 2D, or 3D model. Member types such as beams, trusses, or tension members make it easier for you to define member properties. In order to model surfaces, RFEM provides you with various types, such as Standard, Without Thickness, Rigid, Membrane, and Load Distribution.
Furthermore, RFEM covers various material models, such as Isotropic | Linear Elastic, Orthotropic | Linear Elastic (Surfaces, Solids), or Isotropic | Timber | Linear Elastic (Members).

Optional Parametric Input

Do you want to efficiently process recurring systems? Then the parameterized input is recommended to you. You can create your models by using particular parameters and adjust them to a new situation by modifying the parameters.

Member and Support Nonlinearities

If you are working with nonlinearities, this feature is suited very well to support you. For example, you can specify nonlinearities of member end releases (yielding, tearing, slippage, and so on) and supports (including friction). Furthermore, you can use special dialog boxes to determine the spring stiffnesses of columns and walls based on the geometry specifications.

Variable Member and Surface Properties

Planning with members is also facilitated in the programs due to specific features. You can arrange members eccentrically, support them by elastic foundations, or define them as rigid links. Member sets allow you to easily apply the load on several members.
In RFEM, you can also define eccentricities of surfaces. Here, you can transform nodal and linear loads into surface loads. If necessary, divide surfaces into surface components and members into surfaces.

Generation of Wind and Snow Loads According to Eurocode

Do you want your structures to remain upright even in wind and snow? Then rely on the load wizards for plate and frame structures. You can now generate wind loads according to EN 1991‑1‑4 and snow loads according to EN 1991‑1‑3 (as well as other international standards). The load cases are generated depending on the roof shape.

Optional Automatic Renumbering of Objects

This feature helps you stay flexible in your planning. You can subsequently adjust the numbering of structural objects, such as nodes and members. In this case, it is possible to renumber the objects automatically in accordance with the selected priorities (axis directions).

Simple Model Check

Always keep track of your model. The model check quickly detects for you the input errors, such as overlapping members or identical nodes. You can automatically connect intersecting members during your input. Members can also be extended or divided graphically. The measure function allows you to determine lengths and angles of members and surfaces (only RFEM).

Various Load Types

If you work with loads, find a selection of useful features here. Various load types are available to you for member and surface loads (force, moment, temperature, precamber, and so on). You can assign mmber loads to members, member sets, and member lists. In the case of imperfections, inclination and precamber can be determined precisely according to the Eurocode, the American standard ANSI/AISC 360, the Canadian standard CSA S16, and so on.


Guidelines for Grid View of Building

Create guidelines with or without a description for the display of a building grid! You can lock the guideline position to prevent accidental movement of them, for example.

Furthermore, you can glue the guidelines to nodes in order to move the glued nodes as well. That makes your work a lot easier!



  • 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 Webservice
  • Globally recognized program with over 100,000 users
  • Professional customer support provided by more than 20 support engineers


3,250.00 EUR

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

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

Special Solutions

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. Furthermore, 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
Pushover Analysis

Pushover Analysis for RSTAB 9

Dynamic Analysis

Earthquakes may have a significant impact on the deformation behavior of buildings. A pushover analysis allows you to analyze the deformation behavior of buildings and compare them with seismic actions. Using the Pushover Analysis add-on, you can analyze the seismic actions on a particular building, and thus assess whether the building can withstand the earthquake.

Price of First License
1,450.00 EUR

Time History Analysis for RSTAB 9

Dynamic Analysis

The Time History Analysis add-on performs dynamic structural analysis of external excitation. You can define various excitation functions in tables or as a function of time. The time history analysis is performed using the modal analysis or the linear implicit Newmark analysis.

Price of First License
1,450.00 EUR