RF-/DYNAM Pro - Equivalent Loads Add-on Module for RFEM/RSTAB


Receive regular information about news, useful tips, scheduled events, special offers, and vouchers at least once a month.

Extension of RF-/DYNAM Pro - Natural Vibrations Module for Static Load Analysis Using Multi-Modal Response Spectrum Analysis

The RF-/DYNAM Pro - Equivalent Loads add‑on module performs seismic analysis using the multi-modal response spectrum analysis. The required spectra can be created according to the standards or user‑defined. Subsequently, the equivalent static loads are generated.

  1. Features

    • Response spectra according to various standards
    • The following standards are implemented:
      •  EN 1998-1:2010 (European Union)
      •  DTR B C 2-48 (Algeria)
      •  DTR RPA99 (Algeria)
      •  CIRSOC 103 (Argentina)
      • Australia AS1170.4 (Australia)
      •  ÖNORM B 4015:2007-02 (Austria)
      • Canada NBC 2005 (Canada)
      •  NCh 433 1996 (Chile)
      • China GB 50011-2001 (China)
      • China GB 50011-2010 (China)
      •  NSR - 10 (Colombia)
      •  DIN 4149:1981-04 (Germany)
      •  DIN 4149:2005-04 (Germany)
      •  IS 1893:2002 (India)
      •  NTC 2008 (Italy)
      • Mexico CFE Sismo 08 (Mexico)
      •  SBC 301:2007 (Saudi Arabia)
      •  SANS 10160‑4 2010 (South Africa)
      •  NCSE-02 (Spain)
      •  SIA 261/1:2013 (Switzerland)
      •  SIA 261/1:2014 (Switzerland)
      •  O.G. 23089 + O.G. 23390 (Turkey)
      •  IBC 2000 (USA)
      •  IBC 2009-ASCE/SEI 7-05 (USA)
      •  IBC 2012/15 - ASCE/SEI 7-10 (USA)
    • The following National Annexes are available for EN 1998‑1:
      •  NA to BS EN 1998-1:2004:2008 (United Kingdom)
      •  ÖNORM EN 1991-1-1:2011-09 (Austria)
      • Belgium NBN - ENV 1998-1-1: 2002 NAD-E/N/F (Belgium)
      • Cyprus CYS EN 1998-1/NA:2004 (Cyprus)
      •  CSN EN 1998-1/NA:2007 (Czech Republic)
      •  NF EN 1998-1-1/NA:2011 (France)
      •  DIN EN 1998-1/NA:2011-01 (Germany)
      •  UNI-EN 1991-1-1/NA:2007 (Italy)
      •  NS-EN 1998-1:2004+A1:2013/NA:2014 (Norway)
      •  NP EN 1998-1/NA:2009 (Portugal)
      •  SR EN 1998-1/NA:2004 (Romania)
      •  STN EN 1998-1/NA:2008 (Slovakia)
      •  SIST EN 1998-1:2005/A101:2006 (Slovenia)
    • Input of user-defined response spectra
    • Direction-relative response spectra approach
    • Manual or automatic selection of the relevant mode shapes for response spectra (5 % rule from EC 8 applicable)
    • Generated equivalent static loads exported into load cases separately for each mode and direction
    • Result combinations by modal superimposition (SRSS rule) and by direction superimposition (SRSS or CQC rule)
    • Signed results based on the dominant mode shape can be generated
  2. Input

    The input parameters of the selected standards are proposed by the program. Furthermore, it is possible to enter response spectra manually. Dynamic load cases define a direction of response spectra effects and the structure eigenvalues that are relevant for the analysis.

  3. Calculation parameters


    Equivalent static loads are generated separately for each relevant eigenvalue and excitation direction. They are exported to static load cases to perform the linear static analysis in RFEM/RSTAB.

  4. Equivalent loads from mode shapes


    The equivalent load analysis calculation generates load cases and result combinations. The load cases include the generated equivalent loads, which are subsequently superimposed in result combinations. First, the modal responses are superimposed with the SRSS or CQC rule.

    Afterwards, the directional components of earthquake actions are combined with the SRSS or the 100 % / 30 % rule.

Contact us


Do you have any questions about our products? Do you need advice for your current project? 
Contact us or find various suggested solutions and useful tips on our FAQ page.

+49 9673 9203 0


Customer Projects

Customer Projects designed by Dlubal Software products

Interesting customer projects designed with the structural analysis programs by Dlubal Software.

PRICE for RFEM (VAT excluded)

  • RF-DYNAM Pro - Equivalent Loads 5.xx

    760.00 USD

  • Next License

    342.00 USD

PRICE for RSTAB (VAT excluded)

  • DYNAM Pro - Equivalent Loads 8.xx

    580.00 USD

  • Next License

    261.00 USD

Customers who bought this product also bought
RFEM Main Program
RFEM 5.xx

Main Program
Structural FEM Analysis Software

RFEM Dynamic Analysis
RF-DYNAM Pro - Natural Vibrations  5.xx

Add-on Module for RFEM
Analysis of Natural Vibrations

RFEM Steel Structures

Add-on Module for RFEM
Design of Steel Members and Sets of Members According to EC 3

RFEM Concrete Structures

Add-on Module for RFEM
Reinforced Concrete Design of Members and Surfaces (Plates, Walls, Planar Structures, Shells)

RFEM Concrete Structures
EC2 for RFEM 5.xx

Module Extension for RFEM
Extension of Reinforced Concrete Design Modules with Design According to Eurocode 2

RFEM Others

Add-on Module for RFEM
Stability Analysis According to Eigenvalue Calculation Method

RFEM Others
RF-IMP 5.xx

Add-on Module for RFEM
Generation of Pre-Deformed Initial Structures and Equivalent Imperfections for Nonlinear Calculation

RFEM Dynamic Analysis
RF-DYNAM Pro - Forced Vibrations 5.xx

Add-on Module for RFEM
Time History Analysis and Multi-Modal Response Spectrum Analysis

RFEM Concrete Structures
RF-CONCRETE Columns 5.xx

Add-on Module for RFEM
Reinforced Concrete Design According to Model Column Method (Method Based on Nominal Curvature)

RFEM Others
RF-MAT NL 5.xx

Add-on Module for RFEM
Consideration of Nonlinear Material Laws

RFEM Timber Structures
RF-TIMBER Pro 5.xx

Add-on Module for RFEM
Design of Timber Members and Sets of Members

RFEM Connections

Add-on Module for RFEM
Frame Joint Design According to EN 1993-1-8 (EC 3)