Structural Frame & Truss Analysis Software RSTAB | Modelling

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, 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. For further design, there are various add‑on modules available, considering structural data of specific materials and standards.

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!”

Useful auxiliary functions and tools for generation of structures including loads facilitate the modelling process. Member nonlinearities (creeping, tearing, slippage, friction, and others) are also possible as well as rigid couplings, nonlinear springs, or eccentric connections.

  1. Cross-Section and Material Libraries Including Favorites

    Extensive cross‑section and material libraries facilitate modeling of plate and beam structures. These libraries can be filtered and extended by user‑defined entries. It is possible to import and analyze special cross‑sections from SHAPE‑THIN and SHAPE‑MASSIVE.

  2. Combined and Hybrid Cross-Sections

    It is possible to define combined timber cross-sections such as  U-, T-, I- and box‑shaped beams. Single elements are connected by rigid or semi‑rigid connections. Furthermore, there are hybrid cross-sections available. In this case, a submenu provides an option to assign different materials to the individual cross‑section parts.

  3. Working with Layers

    Various tools such as the object snap, user‑defined input grids, and guidelines facilitate the graphical input of structural data. DXF files can be imported as line models or used as a layer in the background in order to use specific snap points.

  4. Useful Generating Tools

    Generating tools to enter parametric models such as frames, halls, trusses, spiral stairways, arcs, or roofs. In addition, many generators allow for the creation of load cases and loading resulting from weight, snow, and wind.

  5. Optional Parametric Input

    For efficient editing of recurring systems, RFEM provides the parameterized input, which can be combined with a parameterizable guideline method. Models can be created using particular parameters and adjusted to a new situation by modifying the parameters.

  6. Simple Selection According to Specific Categories

    Various buttons allow you to directly change the perspective and work plane. By zooming, rotating and shifting the structure you can quickly adjust the appropriate view. Partial views represent specific structural parts clearly. Inactive objects can be displayed transparently in the background. By selecting structural elements according to special criteria, it is possible to group objects in a simple way.

  7. Easy Model Input

    Structures are entered as 1D, 2D or 3D models. Member types, such as beams, trusses, or tension members, facilitate the definition of member properties. In order to model surfaces, RFEM provides various surface types, such as Standard, Orthotropic, Glass, Laminate, Rigid, Membrane, and others.

    In addition, you can select various material models: Isotropic Linear Elastic, Isotropic Plastic 1D/2D/3D, Isotropic Nonlinear Elastic 1D/2D/3D, Orthotropic Elastic 2D/3D, Orthotropic Plastic 2D/3D (Tsai‑Wu 2D/3D), Isotropic Thermal‑Elastic, Isotropic Masonry 2D, and Isotropic Damage 2D/3D.

  8. Member and Support Nonlinearities

    It is possible to specifiy nonlinearities of member end releases (yielding, tearing, slippage, etc.) and supports (including friction). For this, there are special dialog boxes available for determining the spring stiffness of columns and walls based on the geometry input.

  9. Variable Member and Surface Properties

    Members can be arranged eccentrically, supported by elastic foundations, or defined as rigid connections. Sets of members facilitate load application on several members.

    In RFEM, you can also define eccentricities of surfaces. Here, it is possible to transform nodal and linear loads into surface loads. It is also possible to divide surfaces in surface components and members in surfaces.

  10. Wind and Snow Load Generation According to ASCE/SEI 7-10

    There are load generators available for beam structures, creating snow loads according to ASCE/SEI 7-10. The load cases are generated depending on the roof structure. Another generator creates coating loads (ice). You can save recurring load combinations as templates.

  11. Automatic Renumbering of Objects

    The numbering of structural objects such as nodes and members can be adjusted subsequently. It is possible to renumber the objects automatically in accordance with the selected priorities (directions of axes).

  12. Simple Model Check

    Members can be extended or divided graphically. The model check quickly detects entry errors such as identical nodes or double members and deletes them. When entering structural data, you can automatically connect intersecting members. The measure function allows you to determine lengths and angles of members and surfaces (only RFEM).

  13. Various Load Types

    There are various load types available for member and surface loads (force, moment, temperature, precamber, and others). Member loads can be assigned to members, sets of members, and member lists. In the case of imperfections, inclination and precamber can be determined according to Eurocode or the American standard ANSI/AISC 360.

  14. Optional Regeneration of Model

    It is possible to edit a model in the active rendering. The “Regenerate Model” function is useful when correcting slight deviations of node coordinates. Furthermore, it is possible to design round or angled surface corners (in order to reduce singularities in RFEM, for example).

Contact us

Contact Dlubal

Do you have any questions about our products or need advice on selecting the products needed for your projects?
Contact us via our free e-mail, chat, or forum support or find various suggested solutions and useful tips on our FAQ page.

+49 9673 9203 0

info@dlubal.com

Event Invitation

International Mass Timber Conference

Conference 12 April 2022 - 14 April 2022

Event Invitation

Structures Congress 2022

Conference 21 April 2022 - 22 April 2022

Effective BIM Workflows Between RSTAB & RFEM and IDEA StatiCa

Effective BIM Workflows Between RSTAB & RFEM and IDEA StatiCa

Webinar 5 August 2021 11:00 AM - 12:00 PM CEST

Plate and Shell Buckling Utilizing Dlubal Software

Plate and Shell Buckling Utilizing Dlubal Software

Webinar 30 March 2021 2:00 PM - 2:45 PM CEST

CSA S16: 19 Steel design in RFEM

CSA S16:19 Steel Design in RFEM

Webinar 10 March 2021 2:00 PM - 3:00 PM EDT

The Most Common User Errors With RFEM and RSTAB

The Most Common User Errors With RFEM and RSTAB

Webinar 4 February 2021 2:00 PM - 3:00 PM BST

Stability Design in Steel Construction with RFEM and RSTAB

Stability Design in Steel Construction with RFEM and RSTAB

Webinar 1 December 2020 2:00 PM - 2:45 PM BST

Programmable COM Interface for RFEM/RSTAB

Programmable COM Interface for RFEM/RSTAB

Webinar 12 May 2020 3:00 PM - 3:45 PM CEST

Designing Cold-Formed Steel Sections According to Eurocode 3

Designing Cold-Formed Steel Sections According to Eurocode 3

Webinar 30 April 2020 3:00 PM - 3:45 PM CEST

Timber Arch Structure

Timber Arch Structure Design per NDS-2018 in RFEM

Webinar 17 April 2019 3:00 PM - 4:00 PM

Tips and Tricks for Modeling in RFEM

Tips & Tricks for Modelling in RFEM and RSTAB

Webinar 25 April 2018 3:00 PM - 4:00 PM

Aluminium ADM 2015 Structure

Aluminum ADM 2015 Design in RFEM and SHAPE-THIN (USA)

Webinar 26 July 2017 3:00 PM - 4:00 PM

RF-STEEL Warping Torsion

New Modules RF-/STEEL Warping Torsion and RF-/STEEL Plasticity

Webinar 5 December 2016 3:00 PM - 3:30 PM BST

Modeling and Designing Steel Towers by Using RFEM

Modeling and Designing Steel Towers by Using RFEM

Webinar 23 February 2015 3:00 PM - 4:00 PM

RFEM 5 - BIM Integration with Tekla Structures

RFEM 5 | BIM Integration with Tekla Structures

Webinar 19 September 2013 3:00 PM - 4:00 PM

RSTAB
STEEL

Add-on Module

Stress analysis of steel members

Price of First License
760.00 USD
RSTAB
Steel Analysis & Design Software STEEL EC3

Add-on Module

Design of steel members according to Eurocode 3

Price of First License
1,480.00 USD
RSTAB
RSBUCK

Add-on Module

Stability analysis according to the eigenvalue method

Price of First License
670.00 USD
RSTAB
TIMBER Pro

Add-on Module

Timber design according to Eurocode 5, SIA 265 and/or DIN 1052

Price of First License
1,120.00 USD
RSTAB
DYNAM Pro - Natural Vibrations

Add-on Module

Dynamic analysis of natural frequencies and mode shapes of member models

Price of First License
850.00 USD
RSTAB
FE-LTB

Add-on Module

Lateral-torsional buckling analysis of members according to the second-order analysis (FEM)

Price of First License
900.00 USD
RSTAB
STEEL Warping Torsion

Module Extension for STEEL EC3 and RF-STEEL AISC

Warping torsion analysis according to the second-order theory with 7 degrees of freedom

Price of First License
850.00 USD
RSTAB
CONCRETE

Add-on Module

Linear and nonlinear analysis of reinforced concrete members with reinforcement concept

Price of First License
810.00 USD
RSTAB
RSIMP

Add-on Module

Generation of equivalent geometric imperfections and pre-deformed initial structures for nonlinear calculations

Price of First License
450.00 USD
RSTAB
EC2 for RSTAB

Module Extension for RSTAB

Extension of the modules for reinforced concrete design by the Eurocode 2 design

Price of First License
360.00 USD
RSTAB
DEFORM

Add-on Module

Deformation and deflection analysis of members and sets of members

Price of First License
220.00 USD
RSTAB
DYNAM Pro - Equivalent Loads

Add-on Module

Seismic and static load analysis using the multi-modal response spectrum analysis

Price of First License
580.00 USD