New features and options

New features and options in LIRA-FEM software for analysis & design of building structures and simulation of their life cycle.

Analysis server

The first step to 'Cloud technology'; option to carry out analysis on certain computers in the local network

BIM technologies

Enhanced options for the set of converters based on SAF 2.0, DWG, IFC 4.0 formats

API technology

The user could extend the program functionality based on API technology

Stress at nodes

More accurate results with a sparce mesh

Analysis on seismogram

Analysis by direct time integration method for the equations of motion (Time History Analysis)

Iterative FE

Account of the plastic behaviour of materials, unloading path according to initial modulus of elasticity

Enhanced triagulation

A set of triangulation options allows the user to obtain a smoothed FE mesh

SOIL system

Calculation of settlements and subgrade moduli for the man-made, collapsible, expansive, saline, permafrost soil

Export to AutoCAD by layers

Drawings of reinforcement in columns, beams, walls, slabs obtained in Design of RC structures module and formwork drawings may be exported layer by layer to DWG for further work

Analysis according to SP RK EN

Building codes of the Republic of Kazakhstan are supported: loads / combinations, earthquake analysis, analysis of reinforced concrete and steel structures

'Lakhta Centre' tower. Saint-Petersburg, Russia. Inforsproject.
Analyses of building structures were carried out with LIRA-FEM software.

Analysis server

The first step towards 'cloud computer technology' in LIRA-SAPR. Analysis of LIRA-FEM problems is carried out on certain computers in the local network. When analysis is carried out on a server, the engineer could continue to work at his/her workstation. So, the company will make the most of its licences and computer capacity.

Work technique

  • to prepare design model on the clients workstation;
  • to place the problem file 'in queue' (to send to analysis server);
  • to analyse the model on certain server (LAN);
  • after analysis, to copy analysis results back to client computer (optionally);
  • to evaluate analysis results.

Options of user interface

  • to define location where analysis results should be saved; it may be space within the internal network or cloud services for data storage;
  • to trace and obtain push-messages about analysis procedure;
  • for users to manage your problem files in the queue;
  • for administrators to manage the whole queue of problem files.
Preparing model to analysis on server
Preparing model to analysis on server
   - 2021
Analysis server LIRA-SAPR 2021

Analysis according to SP RK EN (Kazakhstan)

  • In the 'Edit load cases' dialog box, it is possible to work with load types according to building codes of Kazakhstan.
  • New tool to generate DCL (design combinations of loads) according to SP RK EN 1990:2002+A1:2005/2011 and the National Annex (NA).
  • New detailed types of temporary load cases to define different coefficients for load combinations according to different categories of premises.
  • Default values are provided according to selected group for analysis (A, B, C)
  • Rules for creating combinations are presented (formulas 6.10 6.16).
  • New temporary loads of 'crane' and 'surge' type.
  • New option to analyse the pilot reinforcement (PR) according to SP RK EN 1992-1-1:2004/2011.
  • New type of analysis 'inclined beam' for SP RK EN 1992-1-1:2004/2011.
  • New tool to generate initial imperfections to simulate the first-order effect (deviations during erection and local imperfections).
  • Generation of initial imperfections in design model

    Generation of initial imperfections in design model
  • SP RK EN 1993-1-1:2005/2011 and NP RK (solid sections) is supported now.
  • Account of free and constrained torsion in analysis of steel structures according to EN 1993-1-1:2005/AC:2009 and SP RK EN 1993-1-1:2005/2011.
  • New mosaic plot 'Class of section' for EN 1993-1-1:2005/AC:2009 and EN 1993-1-1:2005/2011.
  • For EN 1993-1-1:2005/2011, new option to manage the DCL combinations; they will be used when sections are analysed by serviceability limit states.

Interoperability components of BIM technology


  • Analytical model is imported from IFC.
  • Enhanced import from IFC, namely:
    • option to import capitals;
    • option to 'import architectural objects' (to import elements that may be used as the load to generate openings for ventilating duct, etc.);
    • in properties of the object there is a parameter which defines the IFC class that imported object belongs to;
    • new group of parameters that displays properties of the IFC object;
    • during the import procedure, the new building is added on the layer that corresponds to the name of IFC file (so it is possible to show/hide parts of the building if the model consists of several parts located within the same project).

    Import IFC

    Import IFC
  • In the 'Import IFC' node, when the model is updated from the IFC file, the objects may be compared by type and geometry. That is in addition to existing comparison by IFC identifiers. Thus, you could trace changes made in IFC file.
  • New modes for model presentation:

    • 'main model';
    • 'show results for comparison of objects' (all changes made in IFC file will be displayed: added, modified and deleted objects),
    • 'show objects indicated as vacant' (that is, objects deleted in IFC file).
  • New property 'Deleted IFC object' is added to the objects of the model. It defines appropriate parameter to the objects that are no longer in the IFC file. Such objects will not be included into meshed model. According to this parameter you could decide whether to keep these objects in SPF file or not.
  • To import the model from Revit or Tekla simultaneously through the IFC and LiraKM files, new option 'Regulate physical model according to analytical one' is introduced. It helps you to place the Revit analytical model within the SAPFIR physical model and to recognize the steel sections of columns and beams in the SAPFIR physical model.
  • Enhanced export of IFC model.


  • Enhanced import of SAF, namely:
    • import of tables with load types, load cases, design combinations of loads (DCL), concentrated loads, concentrated loads by objects, linear loads, linear loads by objects, surface loads, surface loads by objects and tables of moments;
    • new group of parameters that represents all properties of imported SAF objects. Such group of parameters may be exported to SAF even if parameters were not applied in SAPFIR.

    Import SAF (Structural Analysis Format)

    Import SAF (Structural Analysis Format)
  • New updatable node 'Import SAF'.


  • Export of drawings to DWG format. Drawing generated in SAPFIR module whether it is column reinforcement, formwork drawing of floor slab or layout of elements, may be exported to DWG format.
  • When drawing are exported, the program takes into account all main features encountered by the user during the work with 2D drawings in this format:

    • all objects available on the drawing (walls, slabs, columns, beams, piles, trusses, openings, windows, doors, stairs, grid lines, etc.) are located at appropriate layers that correspond to the object type;
    • tables, dimensions, leaders, hatchings and line types are exported to the native objects of DWG format;
    • necessary styles for the text, line, dimension, multi-leader, table. These styles allow the user to present the DWG drawing exact as drawing generated in SAPFIR module.

    Export to DWG

    Export to DWG
  • The following types of drawings may be exported to DWG format:
    • reinforcement in slab;
    • reinforcement in foundation slab;
    • reinforcement in wall;
    • reinforcement in column;
    • reinforcement in beam;
    • reinforcement in stairs;
    • reinforcement in pile;
    • drawings for detail views of reinforcement (rebar dowels from foundation slabs, transverse reinforcement in punching shear zone);
    • drawings of 2D reinforcing cages (RCUnits);
    • formwork drawings with arrangement of embedded items;
    • drawings with layout of the framework on plan and on section views.
  • During the export procedure, all tabular data in SAPFIR is transformed into native tables of DWG format, namely:
    • list of working drawings for the project;
    • schedule of reinforcing items in slabs, walls, columns, beams, piles, stairs;
    • list of components;
    • list of steel consumption;
    • schedule for reinforcing cage drawing of RCUnits;
    • schedule of reinforcing items for dowels;
    • title blocks for sheet of drawing (shapes 3, 4, 5, 6);
    • schedule to the layout of RC structures;
    • schedule to the layout of rebar dowels;
    • list of main materials of RC structures;
    • list of elements in the model;
    • list of columns, beams, walls, slabs, openings, windows, doors, piles, roofs;
    • list of elements by storeys;
    • list of materials;
    • list of materials by storeys;
    • list Stonelight;
    • schedule of steel shapes.
  • These tools are quite useful to export drawings and work with them in programs that support DWG format.

Unified graphic environment

  • For SP 20.13330.2016, new load type is added - 'Progressive collapse'; it will be used when generating combinations for DCF and DCL.

  • Option to work with normative values of loads in design model. When the model type is defined, it is also possible to define whether normative or design loads will be applied to. This option determines rules for generating load combinations for DCF/DCL.

Defining load values for design model

Defining load values for design model
  • Design model may be visualized with assigned sections displayed 'as profiles'; it will be presented in the main window based on DirectX technology.

DirectX visualization with assigned section as profiles

DirectX visualization with assigned section 'as profiles'
  • Option to synchronize the view of design models when analysis results are shown for several problems in multiple windows. This option is helpful for evaluating analysis results when you compare data for different problems and design options.

  • Comparison of results from analyses of RC and steel structures (by design options) and generation of mosaic plot for differences in %.

Comparing analysis results for reinforcement with variation of reinforcement class (1st variant - A 500 2nd variant - A 400)

Comparing analysis results for reinforcement with variation of reinforcement class (1st variant - A 500, 2nd variant - A 400)
  • In the 'Edit load cases' dialog box, now you could work with all types of loads for all building codes supported in the program. In previous versions, the load types were supported only for the following building codes: SNIP 2.01.07-85*, SP 20.13330.2016 and DBN B.1.2 - 2:2006.

New options to edit the load cases

New options to edit the load cases
  • Analysis results of new type 'universal bar' are added to results for analysis of steel structures.

  • New mosaic plot of max values (enveloping) for all checks of assigned and selected sections of steel structures.

  • Option to edit the mesh of plate FE may be applied to selected elements only.

  • User-defined settings may be saved for all stages of analysis.

  • The new option 'Ignore nodes' for nodes; this option enables you to ignore nodes when the model is packed.

  • Program interface is enhanced to support 4K monitors for the SOIL system, design modules for RC and steel structures.

  • New load type 'Seismogram' for problems with time history analysis.

  • To model the nonlinear load cases, new option to copy load histories.

  • New option to export *.txt file for problem with fire resistance (design section) to the problem with heat conductivity.

Creating txt-file for thermal analysis according to parameters in fire resistance problem

Generating *.txt file for heat conductivity according to parameters in fire resistance problem
  • To evaluate analysis results for pilot reinforcement, a special colour palette is provided with different colours for ranges > 1 and <1; option to define colour palette with contrasting change of colours.

  • To evaluate areas of reinforcement in plate elements, the max area of upper/lower reinforcement along every direction X and Y may be displayed.

Overall area of reinforcement per 1r.m. along the X-axis

Overall area of reinforcement per 1r.m. along the X-axis: a) max upper/lower, b) upper, c) lower
  • Option to display the total area of pilot reinforcement in plates along the X and Y at upper/lower edges.

  • DCF may be calculated for elements selected on the model; it will save time for local analyses.

  • New input tables 'Local axes of solids' and 'Axes of orthotropy' (plate FE and solids).

  • No limitation on the number of loads exported to 'DEF-PC' software (up to 1000 combinations are allowed for every dimension-type of the isolated foundation and for every part of strip foundation). New variants for fixation of foundations when loads are transferred to DEF-PC program (in addition to rigid connection available earlier, there may be elastic springs simulated with complete set of FE 51 or with one of FE 56; vertical elements may be also supported with horizontals bars or plates on elastic foundation with the specified C1).

  • New stress contour plots (including principal and equivalent stresses) with account of values computed at nodes.

  • Updated information about nodes and elements of design model: there are tabs that describe input & output data for the new types of analysis.

  • In the 'Structural blocks' dialog box, number of elements included into structural block is presented.

  • When models are merged, the names of load cases will be transferred to the base problem.

  • Option to organize materials for design ('RC' and 'Steel') with the 'Move up' and 'Move down' commands.

  • Option to modify the scale factor for the model when the 'Zoom' command is applied.

  • Shortcut keys may be assigned to display information directly on design model and to define presentation of design model.

  • Option to visualize the model without numerical and vector presentation for flags of drawing.

  • Enhanced visualization for dimensions on projections (labels are arranged automatically either along the line or in direction perpendicular to the line).

  • Option to define the building code accepted by default to calculate the moduli of subgrade resction.

Preprocessor LIRA-CAD

  • Option to present local axes of columns, beams, slabs and walls. To modify direction for local axes of objects, it is possible to invert direction of walls and beams. For local axes of slabs, you could define direction for unification of axes: just rotate the axes by certain angle.
  • New options to define direction of local axes for springs (FE 55).
  • Directly in SAPFIR module it is possible to define parameters for analysis of theoretical bearing capacity of pile foundation by the soil model. You could also subtract one pile array from another and create an opening in the pile array.
  • Enhanced tool 'Space':
    • option to select the load case for the load from space;
    • with the 'Floor' option it is possible to define the floor structure within the space. Then the floor will be converted to the uniformly distributed load the value of such load will be computed.

Load from floor

Generating the load from floor in properties of Space

  • Option to define the unit weight for windows and doors. The load from a glass unit, steel profile or door leaf may be optionally applied in two ways: as concentrated loads at the edges of the window / door opening or as linear load along the opening.

Loads from windows

How to define unit weight of the glass unit in the properties of opening

  • For loads distributed across the area, there are enhanced Boolean operations: union, subtraction, cutting along a line.
  • New tools to generate triangulation lines in straight segments of walls. On the triangulation line in walls (subObjects), the tools that provide modification are expanded (move, copy, duplicate using an array).

Triangulation lines for walls

Triangulation lines for walls

  • Option to create triangulation area with arbitrary contour for slabs. Within such triangulation area, you can define triangulation step that will differ from triangulation step for the main slab. For such triangulation area it is also possible to define individual orientation for the local axes.
  • In addition to the auto generation of triangulation points over the column supports, there is an option to automatically generate triangulation areas over walls. For selected walls, triangulation areas are generated by defining the indents from the wall into 4 directions. Local axes may be displayed for the generated triangulation areas. Even for the physical model, in the properties of the local axes, you can define an individual triangulation step for such an area and the angle of axes unification.
  • New option to smooth triangular and quadrangular FE mesh. The developed algorithm makes it possible to improve the shape of finite elements. To improve the quality of the shape for the elements adjacent to the node, the nodes are moved. Triangular elements are united into quadrangular elements. Improving the quality of triangulation allows you to reduce the stress and, accordingly, necessary area of reinforcement in the design model.
FE mesh with smoothing
FE mesh with smoothing
FE mesh with smoothing
Smoothing the triangulation mesh
  • Option to copy several objects located at different storeys.
  • Option 'Cut selected objects by storey levels' will help you to cut by storey levels the walls, columns and beams generated within the several storeys in height. After the procedure, several objects will be generated and placed to appropriate storeys.
  • Enhanced tool 'Inclined slab':
    • option to define boundary conditions and support conditions for the edges of slab;
    • option to define loads (dead, live, short-term) applied to inclined slab and indicate load case for every load type;
    • new method for generation of inclined slab with arbitrary snap.
  • In Properties for the project there are tolerance values that were previously defined for the program:
    • oefficient for aligning slabs by walls;
    • the nearest analytical level (tolerance to generation of offsets for slabs, tolerance to extension of walls up to slabs);
    • min and max lengths of joints;
    • min height of the platform elements;
    • grip area for finding panels in auto generation of joints;
    • max gap between panels when joint layout is selected.
  • Stiffness FE type 309 (geometrically nonlinear arbitrary 3D bar with large displacements) may be assigned to columns and beams. Stiffness FE type 309 may be computed from parameters of the object. Any parameter of stiffness may be reduced/increased with coefficients to stiffness. It is also possible to define the stiffness parameters for the object manually.
  • Option to define design parameters for the check and/or selection of steel sections for trusses.
  • Hinges are defined in terms of hinges in VISOR-SAPR module. Hinge is taken to mean that there is no stiffness or there is limited stiffness for the restraint between one of bar ends and model node. The hingle may be imposed at the beginning and/or at the end of the bar by any DOF in local coordinate system of the bar. The hinges may be either angular (about axes UX1, UY1, UZ1) or linear (along axes X1, Y1, Z1). It is also possible to remove restraint W to allow free warping of cross-sections of bar ends.

Defining hinges for bars

Option to define hinges for bars

  • In SAPFIR settings there is a new option default layer, when the object is generated it will be placed at this layer. New layer is generated by the type of generated object: layer of columns, layer of walls, layer of beams, etc.
  • The structure itself and the meshed model may be visualized in colour according to the object type, in random colours, in colours of materials and in colours of stiffness. Such colour presentation may be transferred to VISOR-SAPR module as the colours of structural blocks (colour by type of object and colour by type of material) or as colours of stiffness values.

Meshed model in colours of stiffnesses

FEM model in colours of stiffness values

  • Updated filter by parameters of objects: all objects are added and all parameters available for these objects. It is possible to select subObjects (points/lines of triangulation, local coordinate systems, punching shear contours) by different criteria.
  • In filter by parameters there is an option to visualize parameters of the objects in colour. You could select any parameter (thickness, cross-section, material, FE type, support, etc.) and visualize the range of values for this parameters in appropriate colour palette.

Contour plot

Mosaic plot with assigned support options

  • In properties of objects (beams, columns, slabs, walls), the support option may be defined 'Coupled DOF along X and Y' and 'User-defined coupled DOF' where you could specify directions by which DOF should be coupled.
  • Option to generate the summary table with all elements of steel section in the model. For steel sections, the following data is displayed in the table: element tag, object name, assigned cross-section, length and mass. You could arrange elements by storey, layer, type of object and generate the summary table only for elements selected on the model. Analysis results for checked and selected sections may be imported from VISOR-SAPR to SAPFIR module. In this case, the program will display shapes for which the check/selection procedure was carried out in VISOR-SAPR module and check/selection results by ULS, SLS and LB. Shapes highlighted in the list may be replaced with selected ones.
  • Schedule of rolled steel to check the theoretical consumption of steel (rolled shapes) for elements of steel structures. The schedule contains the following data: shape name, name or tag for the steel, number or dimensions of the shape, mass for the steel by elements of the structure, total mass, total length and number of elements of certain dimension-type. The schedule of elements may be generated by storeys, types of objects (columns, beams, trusses, beam systems) and by elements selected on the model as well.
  • Calculator of toal loads enables the user to obtain information about all loads defined in the project. Information is presented as the summaty table: the sum of projection of loads onto coordinate axes in global coordinate system. The contents in the summary table may be arranged by storeys, load cases, layers of simulation and selected elements. Information about loads may be obtained both in physical and meshed models.
  • In addition to existing dynamic modules, it is possible to define the input data for the following dynamic loads: modal analysis (100), three-component accelerogram (29) and earthquake (response-spectrum) - (41). For existing dynamic modules, number of dynamic load accepted in VISOR-SAPR is added to SAPFIR.

Input data for dynamic loads

Input data for dynamic modules

  • In addition to the algorithm for collection of wind load, the wind pressure may be defined in tabular format. When the wind pressure and elevation are defined, the wind speed corresponding to this pressure is calculated automatically. If you define the wind speed and elevations, the wind pressure is calculated automatically. The calculated values are applied as the load to the elements of design model depending on selected application method (to walls, at the ends of floor slabs). It is possible to calculate the wind load by specifying max height of the building, the width of the building perpendicular to the wind load and the storey height. On the right, in the graphic area, the curve for the distribution of wind pressure along the height of the building is displayed. This curve can be edited graphically.

Wind pressure defined in tabular format

Wind pressure defined in tabular format

  • Table of skews for vertical elements.
  • Nonlinear stiffnesses may be transferred to VISOR-SAPR with the specified diagrams of concrete, reinforcement, creep. Histories of nonlinear loadings may be generated.

Input data for nonlinear analysis.png

Input data for nonlinear analysis

  • Regular object is introduced. When the model is generated, the user could define parameters that will describe the regular object (for example, material and section for columns), specify appropriate values and save such object. If you need to input such an object once more, you do not need to define parameters again, just select a saved regular object. It is possible to save a set of regular objects and use them in other projects.
  • New command 'Select similar'. In the 'Filter by parameters' dialog box you could define parameters by which the objects should be considered as similar. It is also possible to create your own filter by criteria and activate it directly from the shortcut menu in the working area of the problem.
  • Export of multiple drawings to PDF, DXF and DWG. Option to export several or all drawings rather than only one current drawing.
  • User-defined tables may be generated on the drawing.


  • Iterative physically nonlinear FE (bar, plate and solid) with account of unloading. New FEs implement the theory of elastic-plasticity and may be used for both static and dynamic analyses. Application of new finite elements is the most efficient in analyses of earthquake-resistant construction and progressive collapse. Taking into account the plastic behaviour of structures will significantly increase the efficiency of design solutions. Two unloading methods are implemented: method 1 - peak-oriented hysteretic model, method 2 - isotropic hardening rule (model). In release 1, to select the unloading method, use the 'Options' for the Solver settings. In future releases were planning to implement the tool to select the unloading method for each type of stiffness separately. This option defines the type of unloading for bars and plates with a new attribute of physically nonlinear analysis 'iterative'. Method 1 is accepted by default.

Advantages of iterative FE when solving physically nonlinear problems:

  • the iterative element will not take forces above the ultimate bearing capacity;
  • iterative elements make it possible to take into account the unloading path of the material according to initial modulus of elasticity;
  • in case of destruction, the accumulated forces that precede the stage of destruction are not fixed;
  • in problems with time history analysis, there is no 'time delay', that is, problems in correspondence between accumulated efforts and displacements.
Defining stiffness for iterative FE
Defining stiffness for iterative FE
Example: behaviour of iterative FE with unloading
Example: behaviour of iterative FE with unloading
Diagram for behaviour of iterative FE with unloading
Diagram for behaviour of iterative FE with unloading
V.I.Feodosjev  Strength of materials
V.I.Feodosjev Strength of materials: Textbook for institutions. Ed.10th, modif. M: MGTU Publishing, 1999. 592 p.
  • For linear plate FE, analysis of stress at nodes is implemented, the analysis results are available in tabular and graphical forms. This option enables you to obtain more accurate results with a sparce mesh.

Computing stresses at nodes

Computing stresses at nodes
  • Option to take into account physical nonlinearity when defining the steel shapes (it is not necessary to describe the section geometry with the standard section types). This option may be applied when iterative FEs are used.

  • Analysis on seismograms is implemented for problems with time history analysis.

Earthquake analysis - seismograms

Earthquake analysis - seismograms
  • Visualization of nodal reactions for problems with time-history analysis (these reactions enable the user to calculate loads on fragment, to carry out punching shear analysis, to calculate reactions in piers - variable in time, selecting dangerous combinations (points in time) for analysis of RC and steel structures).

  • New FEs (one-, two-node) that enable the user to simulate nonlinear hinges (FE with arbitrary piecewise-linear stress-strain diagram). The certain diagram is defined for every loading and unloading path. Loading-unloading path 'Basic rules for peak-oriented hysteretic model'.

    These FEs may be used to compute the ultimate equilibrium of bar structures. The ultimate equilibrium analysis is taken to mean nonlinear analysis of structures that allows you to simulate behaviour of structures under the various types of loads caused by an earthquake. Nonlinear hinges are considered as independent nonlinear joints in the direction of each DOF in the section, that is, interactions between different degrees of freedom are ignored.
  • For FE 255, the option to work with the second modulus of elasticity (this option allows the user to simulate behaviour of seismic isolators as the FE 255 + FE55).

  • Consistent mass matrix for bars with account of shear (Timoshenko bars).

  • To check the input data for the problems with time history analysis, mosaic plots of masses are provided.

  • New dynamics module (64) - a three-component response-spectrum.

Defining three-component response-spectrum

Defining three-component response-spectrum
  • New dynamics module (63) for Turkey, TBEC-2018.

New Dynamics module Turkey TBEC-2018

New Dynamics module Turkey, TBEC-2018
  • Option to use geometrically nonlinear finite elements in the analysis by 'NL Engineering 2'. This option may be applied to: refined analysis of masts (analysis on wind pulsation 'according to building codes' with account of prestress; more accurate natural frequencies for check on resonance), cable-stayed bridges (including, clarified eigenvalue frequencies for check on flutter), large-span roofs (on resonance from noise), etc.

RC structures

  • In analysis on progressive collapse, it is possible to preview additional reinforcement in tabular format or in 'Information about element' dialog box.
  • New element type 'Inclined beam'.
  • In the Fire Resistance system, the user could customize analysis of transverse reinforcement.
  • Table of materials may be modified by cells.
  • Option to select / check reinforcement in plate elements for which stresses are computed not only in the center of gravity, but at nodes as well. It should be noted that when the FE mesh is refined, the difference in results decreases.
Visualization of differences in computing reinforcement (forces) at nodes
Visualization of differences in computing reinforcement (forces) at nodes
Visualization of differences in computing reinforcement (forces) at nodes
Visualization of differences in computing reinforcement (forces) at nodes
  • Analysis of pilot reinforcement may be carried out according to SP RK EN 1992-1-1:2004/2011.
Results for analysis of pilot reinforcement for building code SP RK EN 1992-1-1:2004/2011
Results for analysis of pilot reinforcement for building code SP RK EN 1992-1-1:2004/2011
  • Option to consider the partial safety factors for concrete and reinforcement according to requirements of 'Amendment 1' to SP 14.13330.2018.
  • For SP 63.13330.2018, an ellipsoid of bearing capacity for ULS may be generated.
  • An alternative algorithm for analysis of reinforcement according to SLS by Wood theory.

Steel structures

  • New type of design element - 'universal' bar (truss-beam-column) that enables the user to obtain the envelope result by all checks of the steel section. Calculation and / or check of arbitrary element is performed sequentially according to three calculation procedures - as for a truss element, a column and a beam. When generating tables and mosaic plots of results for an arbitrary element, the max percentage of section utilization for the corresponding checks is displayed. In the local mode of analysis for an element of the model, extended information about analysis results is available.
Universal type of element in analysis of steel structures.png
Universal type of element in analysis of steel structures
  • Account of free and constrained torsion in analysis of steel sections according to EN 1993-1-1:2005/AC:2009, SP RK EN 1993-1-1:2005/2011.
  • SP RK EN 1993-1-1:2005/2011 and NP RK (solid sections) are supported.
  • Results for check of steel sections for building code SP RK EN 1993-1-1
    Results for check of steel sections for building code SP RK EN 1993-1-1
  • For EN 1993-1-1:2005/AC:2009, EN 1993-1-1:2005/2011, new mosaic plot of results - 'Section class'.
  • Analysis of steel sections on fire resistance with account of constrained torsion.
  • Analysis of steel sections is accelerated due to multithreading.
  • For EN 1993-1-1:2005/2011, SP RK EN 1993-1-1:2005/2011, new option to exclude combinations of loads that are not used when checking / selecting sections for serviceability.


  • Option to calculate the stiffness of the FE 57 (pile) according to the model of equivalent foundation.

Properties of a pile group and determining the pile stiffness by the model of equivalent foundation
Properties of a pile group and determining the pile stiffness by the model of equivalent foundation
  • Enhanced method for accounting of the weight of soil removed from the pit (diagram σzγ). In the new version, it is possible to define the contour of the excavation regardless of the foundation. To simulate the contour of the pit, it is necessary define a zero load on the soil and set the property σzγ to it. When calculating a pile group as an equivalent foundation, the foundation pit should always be simulated with a separate load.
Analysis of settlement in pile foundation
Analysis of settlement in pile foundation
  • Optimized algorithm for determining the depth of compressible stratum.
  • For SP 22.13330.2016, option to compute settlements and obtain subgrade moduli for:
    • man-made soil;
    • collapsible soil;
    • expansive soil;
    • saline soil;
    • soil with organic inclusions;
    • permafrost soil (SP 25.13330.2012).
New options of SOIL system
New options in SOIL system

Bar analogues

  • New method for generation of bar analogues. From the objects selected on the model (required to generate the BA), the user could get the numbers of nodes and numbers of elements (source objects) by the specified number of the target bar.
  • Option to ensure the integrity of the data on bar analogues when the model is packed and the numbers of nodes and elements in design model are changed.
Generating lists of nodes and elements for initial and final cross-sections of bar analogue from the elements selected on the model by target bar
Generating bar analogue (from elements selected on the model) by target bar
Auto generation of bar analogues by target bars
Auto generation of bar analogues by target bars

Report Book

  • Data about new options is added in the input/output tables.
  • Information on stresses at nodes with account of node numbers in design model is added to tables of results for plate elements. DCL and DCL characteristic (design / design, live / normative / normative, live), forces from DCL, DCF tables (design / design, live / normative / normative, live), principal and equivalent stresses (by forces / DCL / DCF).
  • Option to manage the name of the screen shot when updating.
  • New tables of results for analysis of steel structures according to EN 1993-1-1:2005/2011, SP RK EN 1993-1-1:2005/2011.

Cross-section Design Toolkit

  • Import of reinforced concrete sections from the VISOR-SAPR module for analysis on fire resistance. The stress-strain diagrams (of materials) corresponding to required fire resistance limit are transferred to the model.
  • New tool that allows the user to add check points to the current section model that is modified now. During analysis, the values of forces and stresses are determined at the check points of the section. These values may be displayed in appropriate table. Check point may be included in the triangulation mesh.

Design of RC structures

  • Generation of formwork drawings.
  • New tool 'Embedded items' to indicate notations for embedded items on the formwork drawings of RC elements: floor slabs, walls, shear walls, etc.
    Library of embedded items includes the most popular ones. The library file may be expanded and modified. Embedded items are displayed schematically on the formwork drawing. The number of items is presented in the schedule for the slab.
  • Additional reinforcement for the floor slab may be arranged automatically. Zones of additional reinforcement are set according to the colour ranges on mosaic plot of reinforcement.


  • Accelerated operation of Generator.
  • An additional option 'opening' is added to the 'Surface load' node.
  • For the node of columns generated along the contour of the cross-section (for example, from dxf), it is possible to create points (for example, at the centre of mass for the section) for the 'Points' Output.
  • Option to multicopy openings with the 'Multicopy by storeys' node.
  • New node 'Additional lines and points of triangulation in the wall'.
  • An integrated environment for development of user-defined nodes in the IronPython language. Enhanced API.

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