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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.

  1. Section properties

    SHAPE-MASSIVE | Cross-Section Properties

    • Cross-sectional area A
    • Shear areas Ay und Az with or without transversal shear
    • Centroid position yS, zS
    • Moments of inertia Iy, Iz, Iyz, Iu, Iv, Ip
    • Inclination of principal axes α
    • Radii of gyration iy, iz, iyz, iu, iv, ip
    • Torsional constant J
    • Cross-section weight G and cross-section perimeter U
    • Location of shear center yM, zM
    • Warping constants Iω,S, Iω,M
    • Max/min cross-section moduli Sy, Sz, Su, Sv und St
    • Plastic cross-section moduli Zy,pl, Zz,pl, Zu,pl, Zv,pl
    • Stress function according to Prandtl φ
    • Derivation of φ with respect to y and z
    • Warping ω
  2. SHAPE-MASSIVE | Features

    • Cross-section modeling using surfaces, openings, and point areas (reinforcements) limited by polygons
    • Automatic or individual arrangement of stress points
    • Extendable library of concrete, steel and reinforcing steel materials
    • Cross-section properties of reinforced concrete and composite cross-sections
    • Stress analysis with yield hypothesis according to von Mises and Tresca
    • Reinforced concrete design according to:
      • Deutschland DIN 1045-1:2008-08
      • Deutschland DIN 1045:1988-07
      •  ÖNORM B 4700: 2001-06-01
      • European Union EN 1992-1-1:2004
    • For the design according to EN 1992-1-1:2004, the following National Annexes are available:
      • Deutschland DIN EN 1992-1-1/NA:2013-04 (Germany)
      • NEN-EN 1992-1-1/NA:2011-11 (Netherlands)
      • CSN EN 1992-1-1/NA:2006-11 (Czech Republic)
      • ÖNORM B 1992-1-1:2011-12 (Austria)
      • UNE EN 1992-1-1/NA:2010-11 (Spain)
      • EN 1992-1-1 DK NA:2007-11 (Denmark)
      • SIST EN 1992-1-1:2005/A101:2006 (Slovenia)
      • NF EN 1992-1-1/NA:2007-03 (France)
      • STN EN 1992-1-1/NA:2008-06 (Slovakia)
      • SFS EN 1992-1-1/NA:2007-10 (Finland)
      • NA to BS EN 1992-1-1:2004 (United Kingdom)
      • SS EN 1992-1-1/NA:2008-06 (Singapore)
      • NP EN 1992-1-1/NA:2010-02 (Portugal)
      • UNI EN 1992-1-1/NA:2007-07 (Italy)
      • SS EN 1992-1-1/NA:2008 (Sweden)
      • PN EN 1992-1-1/NA:2008-04 (Poland)
      • NBN EN 1992-1-1 ANB:2010 (Belgium)
      • NA to CYS EN 1992-1-1:2004/NA: 2009 (Cyprus)
      • BDS EN 1992-1-1:2005/NA: 2011 (Bulgaria)
      • LST EN 1992-1-1:2005/NA:2011 (Lithuania)
      • SR EN 1992-1-1:2004/NA:2008 (Romania)

    In addition to the National Annexes (NA) listed above, you can also define a specific NA, applying user-defined limit values and parameters.

    • Reinforced concrete design for stress-strain distribution, available safety or direct design
    • Results of reinforcement list and total reinforcement area
    • Printout report with option to print a short form
  3. Printout report

    SHAPE-MASSIVE | Results

    All results can be evaluated numerically and graphically and displayed in a visualization. Selection functions facilitate the targeted evaluation.

    The printout report corresponds to the high standards of the FEA program RFEM and the beam analysis program RSTAB. Modifications are automatically updated. Furthermore, you can print the reduced report in a short form including all relevant data and a user-defined cross-section graphic.

  4. General data of section


    It is possible to freely model a cross-section using surfaces limited by polygonal lines, including openings and point areas (reinforcements). Alternatively, you can use the DXF interface to import the geometry. An extensive material library facilitates modeling of composite cross-sections.

    Definition of limit diameters and priorities allows for a curtailment of reinforcements. In addition, you can consider the respective concrete covers and prestresses.

  5. Normal stresses sigma-x

    SHAPE-MASSIVE | Stress Analysis

    • Normal stresses σx due to axial force and bending
    • Shear stresses τ due to shear force and torsion
    • Equivalent stresses σeqv compared with limit stress
    • Stress ratios related to equivalent stresses
    • Normal stress σx due to unit axial force N
    • Shear stress τ due to unit shear forces Vy, Vz, Vu, Vv
    • Normal stresses σx adue to unit moments My, Mz Mu, Mv
  6. Concrete stresses and rebar stresses

    SHAPE-MASSIVE | Reinforced Concrete Design

    • Stresses σ and strains ε of concrete and reinforcement without considering concrete tensile strength (cracked state)
    • Ultimate limit state design (existing safety) or design of defined internal forces
    • Location of the neutral axis α0, y0,N, z0,N
    • Curvatures ky, kz
    • Strain in neutral center ε0 and governing strains at compressive edge ε1 and at tensile edge ε2
    • Governing steel stress ε2s

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Contact to Dlubal

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.