RSTAB A Structural Analysis Program for Planar and Spatial Frameworks

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RSTAB is provided as a stand-alone analysis package for frameworks, for a total once off price of and excludes the price of add-on modules
RSTAB 2D is a framework program for planar models and girder grillages, for a total once off price of and excludes the price of add-on modules
Price is based on the current Rand/Euro exchange rate

The information provided here is taken from the Dlubal website and presented here for ease of access. Please contact us to get more in-depth information at sales in order to request more information, or to obtain an information pack containing a trial version of the software, the manual for the software and training videos available from the Dlubal website but packaged on DVD for convenience. A brief presentation compiled by Tessera is included, detailing our services.

RSTAB is a powerful analysis program for 3D framework calculations, reflecting the current state of the art and helping structural engineers to meet requirements in modern civil engineering. RSTAB represents the basis of a modular software system: With RSTAB you can determine internal forces, deformations and support reactions. For subsequent designs we offer additional modules to consider material- and standard-specific conditions. Due to the RSTAB software structure consisting of add-on modules, a program package can be tailored for you to meet your individual needs.


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Summary of the RSTAB add-on modules

  • STEEL performs general stress designs by calculating existing stresses and comparing them with the limit stresses. During the stress analysis process, the program also determines the maximum stresses of sets of members and shows the governing internal forces for each member. In addition, STEEL offers you an automatic cross-section optimization including an export option for modified cross-sections to RSTAB. Separate STEEL design cases allow for a flexible analysis of stresses.
  • STEEL EC3 performs all typical ultimate limit state designs, stability and deformation analyses as well as fire protection designs for structural steel according to, EN 1993-1-1:2005 + AC:2009, EN 1993-1-2:2006 + AC:2005 (fire protection design), EN 1993-1-4:2006 (stainless steel)and EN 1993-1-5:2006.
  • The RSTAB add-on module ALUMINIUM designs members and sets of members consisting of aluminum for the ultimate and the serviceability limit state according to the standard EN 1999-1-1:2007 (Eurocode 9).
  • KAPPA performs the analysis for flexural buckling of members and sets of members subjected to loading due to uniaxial bending with axial force or biaxial bending with and without axial force. The flexural buckling analysis is carried out according to DIN 18800-2:1990-11. As KAPPA allows for a check of (c/t) ratios, it is also possible to perform an analysis for local buckling. The ultimate limit state design can be carried out according to the elastic-plastic method or, for structures subjected to dynamic actions, the elastic-elastic method.
  • Take advantage of LTB to design your structural systems efficiently. The program determines and applies stiffness-increasing effects conforming to standard, such as rotational restraints, shear panels, warp stiffenings, plastic cross-section resources or specific support conditions. The determination of the moment coefficient ζ and thus of the ideal elastic critical moment Mcr follows different approaches.
  • The add-on module FE-LTB is used to detach planar sub-structures from spatial RSTAB models to calculate them according to the second-order analysis for torsional buckling considering warping. The program imports geometrical, support and load data from RSTAB automatically. Subsequent to the calculation, FE-LTB displays deformations, internal and support forces as well as stresses. As warping torsion is taken into account by the module's calculations, the program displays also the results for bimoment distribution and the diagrams for primary and secondary torsion.
  • The RSTAB add-on module C-TO-T checks the effectiveness of cross-section elements under compressive stresses. The design is described in the standard DIN 18800, part 1, el. (745) and (753), and in Tables 12 to 15. Having fulfilled the requirements of the width-to-thickness analysis, stability designs for buckling are no longer necessary.
  • CONCRETE is an RSTAB add-on module used to perform the reinforced concrete design of member elements. Take advantage of this program to evaluate RSTAB internal forces in various design cases. You can combine any number of members as well as load cases, load combinations and result combinations in individual CONCRETE cases for the design process. In this way, it is possible to quickly calculate alternative designs using different concrete strength classes or modified cross-sections. The design is carried out for uni- and biaxial bending with axial force as well as shear and torsion.
  • The add-on module CONCRETE Columns is a powerful software tool of the RSTAB program family used to design reinforced concrete. Take advantage of CONCRETE Columns to perform the ultimate limit state design for rectangular or circular compression elements according to the model column method (method based on nominal curvature).
  • Take advantage of the advanced setting EC2 for RSTAB integrated in the RSTAB add-on modules CONCRETE and CONCRETE Columns when designing reinforced concrete according to EN 1992-1-1:2004 + AC:2010 (Eurocode 2) including the corresponding national application documents (NAD).
  • The add-on module FOUNDATION Pro is used to design single, bucket and block foundations for all support forces arising in the RSTAB model. The reinforced concrete design of the foundation is performed according to the standard: EN 1992-1-1:2004 +AC:2010. The geotechnical designs are performed according to the standard: EN 1997-1. In addition to the support forces from RSTAB, the program allows for specifying loads to be integrated into the foundation's design. FOUNDATION Pro provides a reinforcement proposal for the upper and lower plate reinforcement which can always be adjusted individually.
  • The program TIMBER Pro is integrated as add-on module into the user interface of RSTAB. TIMBER Pro designs timber members and/or sets of members on the basis of new design procedures provided by the following standards: EN 1995-1-1:2004-11+A1:2008, DIN 1052:2008-12 and SIA 265:2003. A comprehensive cross-section library and an extendable material library including standard-specific strength parameters are provided.
  • The basic module TOWER Structure represents an innovative tool for generating 3D tower structures being rather complex in their geometry. Lattice towers and radio masts can be created comfortably due to the input of parameters. In addition, it is possible to adjust already existing RSTAB models in the add-on module TOWER Structure.
  • Towers are used as supporting structures for transmitting antennas and further equipment such as platforms, ladders and cable lines that must be taken into account for the design. Take advantage of the add-on module TOWER Equipment to easily create transmitter towers with the relevant equipment.
  • Take advantage of the third TOWER module to create design relevant actions for RSTAB. The loads can be specified as parameterized wind, ice and variable loads. The objects defined in TOWER Structure and TOWER Equipment are also taken into account for the generation.
  • The add-on module TOWER Effective Lengths determines the buckling lengths of members used in lattice towers with square, rectangular or triangular floor plans. When entering data the program considers user-created lattice towers generated in the main program RSTAB as well as lattice towers from the add-on modules TOWER Structure and TOWER Equipment. Subsequent to the determination of the effective lengths you can export them to the add-on module TOWER Design for further use.
  • With the add-on module TOWER Design you can design lattice towers according to EN 1993-1-1, EN 1993-3-1 and EN 50341. Relevant input from the add-on modules TOWER Structure, TOWER Equipment, TOWER Loading and TOWER Effective Lengths are taken into account for the design.
  • The RSTAB add-on module FRAME-JOINT Pro creates and classifies bending-resistant, bolted connections between columns and horizontal beams. The rigid bolt connections are designed by the ultimate load method according to Eurocode 3 or DIN 18800. Furthermore, it is possible to apply stiffeners, supplementary web plates as well as backing plates. In addition, you can check the geometrical feasibility of connections with respect to the size of the wrench used for tightening screws.
  • The RSTAB add-on module END-PLATE is used to calculate bending-resistant end plate connections with high-strength friction-grip bolts and rigid weld connections according to DIN 18800-1:1990-11. END-PLATE provides a design and dimensioning mode for bolts, end plates and all welds of the connection. You can design the connections with double and singly symmetrical I-sections for an uniaxial acting moment with axial and shear force.
  • With the RSTAB add-on module CONNECT, you can dimension three types of shear connections typical for steel constructions, performing the design according to DIN 18800-1:1990-11. The connection can be clearly documented with graphics and numerical values in the printout report. It is also possible to print a dimensioned 3D graphic of the connection.
  • HSS is an RSTAB add-on module used to design and analyze hollow section connections. The connections can be imported from RSTAB, as well defined manually within the add-on module. Planar and spatial truss nodes, which contain round, square or rectangular hollow sections, can be designed. HSS performs the ultimate limit state design according to specifications given in Eurocode 3 (EN 1993-1-8:2005).
  • JOINTS Steel - Column Base designs footings of hinged and restrained steel columns according to: EN 1993-1-8
  • The add-on module DYNAM Basic is used to perform the analysis of eigenfrequencies for the RSTAB structure. The input data entered in RSTAB will be imported automatically. Together with the stiffnesses, masses significantly affect a structure's natural behavior. DYNAM allows you to carry out structural plannings that comply with the requirements concerning modeling and calculation.
  • DYNAM Addition I is used to analyze structures for their dynamic behavior due to external excitation. The program analyzes forced vibrations resulting from earthquakes in accordance with the multi-modal response spectrum method. Furthermore, you can take advantage of this module to simulate impacts and crashes or to analyze excitations of machines. The excitation functions can be defined by time histories of forces or moments, by accelerations (accelerogram) or by harmonic functions. Alternatively, you can specify the excitation by defining a response spectrum. In the results display, the program shows internal and support forces, deformations, deformation velocities and accelerations either in the form of a time history or as extreme values. To start the analysis, DYNAM Addition I needs the eigenmodes from DYNAM Basic.
  • Take advantage of this RSTAB add-on module to determine equivalent lateral loads for earthquakes according to the multi-modal response spectrum method: DIN 4149:2005-04, DIN 4149:1981-04, EN 1998-1:2004-11, ENV 1998-1-1:1994, IBC 2000 and IBC 2009-ASCE/SEI 7-05. DYNAM Addition II depends on the results of the natural frequency calculation provided by DYNAM Basic.
  • The RSTAB add-on module DEFORM performs the deformation analysis of individual members and complete sets of members. The allowable limit deformations can be set individually in relation to the undeformed system and displaced member ends.
  • The RSTAB add-on module RSMOVE creates load cases from various positions of moving loads such as cranes or cars on bridges. When generating those loads, it is possible to create also an enveloping load combination. The data is entered only in two input tables. In this way, and due to the quick load case generation for RSTAB, you can save a lot of time.
  • RSIMP is a powerful RSTAB add-on module used to create equivalent geometric imperfections (equivalent lateral loads) or a pre-deformed initial structure in RSTAB. To use all features provided by RSIMP, it is recommended to install the add-on modules RSBUCK and DYNAM Basic.
  • Based on the eigenvalue analysis, the RSTAB add-on module RSBUCK calculates the buckling shapes of the structure modeled in RSTAB. The program determines for each member the structure-specific buckling lengths and loads including the respective critical load. The critical load factor for the entire structure is displayed additionally. The RSBUCK results can be used for further stability analyses such as the flexural buckling design according to EN 1993 in the add-on module STEEL EC3 or according to DIN 18800 in the add-on module KAPPA. The buckling shapes can also be used for generating equivalent imperfections with RSIMP.
  • The RSTAB add-on module SUPER-RC enables you to subsume construction phases when varying conditions of model and actions are involved. Construction loads or temporary supports are not only relevant in bridge design but have to be considered in many other fields of structural engineering.
  • STAGES is an RSTAB add-on module used to calculate framework models by taking into account the sequence of the construction work. When the influence of the construction progress is neglected, mistakes in the calculation of the total structure may be produced. STAGES allows for analyzing such effects to consider them for the design of the structural system.
  • RS-COM is a programmable interface (API) based on COM technology. Using this interface, you can customize RSTAB to suit your individual needs and program input macros or post-run routines.

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