Service Pack 2022-0

SOFiSTiK Structural Desktop (SSD)



Get started easy: Based on a few user specified system parameters only, the re-worked system information dialog directly takes you to a tailored initial project configuration.

System and Design Codes


  • merging of the EN-INI-files, selection of the design code structurewise, e.g. only EN 199x-200x for buildings and EN 199x-200x-BRIDGE for bridges
  • merging of the SIA-INI-files, selection of the design code only SIA 26x
  • SFS EN199x-200x and SFS EN199x-200x-BRIDGE: update of the action snow and snow classes according to NA SFS

Other Issues

  • omitted design codes: UNI DM-2008 (mapping to UNI DM-2018), EN 1992-1991 od draft, DS 411, DS 411-BRO, NS 3472, NS 3473, SS BBK-04, SS BRO-2004
  • DIN EN199x-200x, DS EN1992-2004: Factors for VMIN in equation (6.3N) vmin=VMIN*K**(1.5)*fck**(0.5) deactivated in order to use the equation of the National annex of the EN 1992-1-1
  • US ACI-318-14, US ACI-318-08: action L - default for the consideration of the load cases now COND

Analysis tasks


Construction Stages task automatically initializes the groups' construction stage information (activation - deactivation) from the database.

Earthquake RSA - reloaded


We completely revised our workflow for seismic response spectrum analysis. The task comes with new backbone technology and charged experience:

  • tailored user interface with carefully engineered default settings
  • straight-forward account of stiffness reduction for vertical supporting members
  • easy ignoring of inertial effects of structural parts that are directly embedded into the soil
  • mode filtering allows to concentrate on the relevant modes; meet the targeted mass participation with as few modes as possible
  • the new computational backbone offers a new solution procedure for dynamic eigenmode analysis and noticeable performance gains for larger structures

Storey Checks


For the assessment of structural seismic response, storey-based design criteria are an important ingredient in an engineer’s toolbox. Our new task Storey Checks provides the following calculation procedures for the storey results in the form of tables and corresponding plots:

  • General Tables: Storey Levels Synopsis, Centre of Rigidity and Centre of Mass
  • Regularity Checks: Soft and Weak Storey
  • Advanced or Load-dependant Checks: Second Order Check (P-Delta Effects), Storey Shear Forces, Storey Drift Check, Storey Displacements

Computer Aided Bridge Design (CABD)


Traffic Loader task allows the selection of the spring items from the available Result Sets (RSETs) as a calculation result.

Superpositions and Load Combinations


All superpositions of one combination rule can now be handled in a single MAXIMA run. Thus, intermediate and final superpositions can be processed in a single superposition task, only the sequence of input is important.

Shear Wall Design


The new task Shear Wall Design performs a preliminary shear wall design to calculate the required reinforcement:

  • calculation of the required longitudinal reinforcement using the Simplified Compression and Tension Method
  • evaluation of each edge zone dimensions
  • calculation of the required shear reinforcement

Capacity Check for Building Cores


This new task performs a capacity check for building cores and single shear walls:

  • calculation of relative capacity and capacity check for core and single shear wall cross sections
  • possibility for modifications of reinforcement for cross sections and reinforcement staggering
  • various plot options of interaction capacity curves
  • core and shear wall cross section plot

IFC/SAF Connector


The new IFC/SAF Connector task enables you to import structural analysis models generated by other software in IFC (Structural Analysis View) or SAF format, thereby facilitating the Open-BIM workflow. Further information and how to use it are provided in the online manual.



Construction stages are now considered also for shear within NSTR.

DESI with KSV PL/PLD calculates the utilisation for plastic capacities for steel- and composite sections.



Gravity center can be defined in record SVAL.

Shear bonds (WELD with a thickness <0) do not contribute to the determined shear forces. This can lead to lower plastic values, which are calculated with steel area only, but also to possibly higher elastic values, where inertia includes steel and concrete. Therefore the elastic values will not displayed anymore.

For the stress points (record SPT), the thickness TEFF for the c/t check can now also be set as a reference to a TVAR variable. (166600,173353)


The plastic limit moments of rotated standard profiles were wrong if they were not calculated explicitly (CTRL STYP FORC). (184658)

Shear forces of the combinations of plastic limit forces were sometimes wrong. They will not displayed anymore.

The minimum reinforcement was not considered for the calculation of elastic limit forces.

The reducing areas of non effective reinforcements (NEFF Y,Z) and of reinforcements in composite sections were sometimes incorrect considered.

Sometimes shear stiffness of non effective reinforcements (NEFF -RN) were used in FE sections.

Shear areas Ay and Az and torsional inertia It of sectional design values were sometimes wrong.

Suppress rotation of principal axes (Iyz=0) was sometimes not considered.

The torsional inertia was sometimes not initialized, so the standard buckling curve may have been incorrect.

At construction stages and composite sections, the plastic moments Mt, Mt2 and Mb were sometimes related to a wrong shear center.

Fixed crash when processing complex thick walled cross sections with many nested polygons.

The export of variable thickness was sometimes wrong.

Other Issues

The torsional equivalent area (Bredt) is calculated more exact in case of one perimetric reinforcement (CURF).

A warning is printed if the sum of reinforcement is bigger than As,max recommending in design code.



3D continuum analysis, new steel material with arbitrary hardening: For nonlinear 3D continuum analysis, a STEE material is now considered as elastoplastic continuum material of von-Mises type. Nonlinear hardening is automatically calibrated according to the specified work law (e.g. tri-linear). Example file: .../bric/bric_steel_trilinear_uniaxial_tension.dat.



Classification of design elements is now possible using the DSLN option TYPE, considering the intended structural member. Currently “Building Core” and “General” types can be set.

Geometry of a design element can now be defined from a connected sequence of truss elements by the DGEO option TRUS.



Enhancements and extensions for the wind derivative. The estimates of the eigenfrequencies have been improved and may be specified with GRP and STEP.



SUPP: SRSE Determination of the associated square root while maintaining the sign.

TRAC: Tracing of RSET results, boundary results and results of objective functions possible, improved printout for beam sections with result jumps (e.g. shear force jump).

Other Issues

SUPP: ETYP QUA* and BRI* obsolete.



The new input CFG allows to account for an existing configuration file (*.plb.cfg) when converting the content of a PLB into a DOCX file.

Inactive Chapters, Modules and Sections of the SOFiSTiK printouts (*.plb) are ignored by the graphical command Export to DOCX.

Result Viewer


Complete redesign of filters with focus on faster input, combination of multiple filters and improved visibility.

The performance of the Export to Excel (XLSX) has been significantly improved.

Improved the user experience of the JOIN window.

A new startup window is now available.

A new online help is now available.

New values are available:

  • local nodal support forces at structural points
  • local coordinate systems
  • length of structural lines
  • references of design elements to axis, structural lines, beams and trusses
  • references of cables and trusses
  • areas of thin walled elements
  • type of shear connection
  • cross section type
  • storey level extremal inter-storey drift

The generation of stresses on cross section was revised:

  • shear stresses and comparative stresses can be calculated for cross sections with more than one construction stage.
  • shear stresses and comparative stresses are available for stress points.
  • comparative stresses are available for shear cuts.
  • shear bonds do not show shear stresses anymore (adapting to program AQUA).
  • reinforcement stresses and material stresses can be output in one list (no warning 822).
  • some internal names of columns were unified.
  • representation of a plastic stresses block improved.
  • unit shear stresses are plotted in another unit. So the small values should be better to read.

Factors, e.g. utilisation levels, may be displayed as percent.

Same columns, e.g. quad element number, have now always the same unique name ('QUAD' instead of 'No').



Enhancements for wind generation. Input values EIGB,EIGT and EIGL in record GRP and WGEN have been removed resp. are no longer used.



Groups can be assigned an activation / deactivation construction stage number.



Groups can be assigned an activation / deactivation construction stage number.

Predefined Result Sets for bearings at nodes may be generated using the new SRES command.

Other Issues

Meshing performance improved.



CADINP Completer: An intelligent CADINP code completion, which will provide input suggestions via pop up as you type. To manually open the pop up of the CADINP completer, the CTRL + L keyboard shortcut may be used.

The font size scaling has been improved.

Improved the user experience of the "Find", "Replace" and "Find in files" dialog.

Line numbers are now displayed.

A new startup window is now available.

A new online help is now available.



It is possible to display generated and internal nodal sequences.

The cross section descriptions of standard steel profile are printed without the code text. (168450,188400)

It is possible to display storey level extremal inter-storey drift.

The single selection for nodal sequences (SEL EDGE) is possible.


Coordinates of QUAD nodes and BRIC nodes were not displayed anymore.

Other Issues

Check of non linear BRIC results took some time.