Announcement and preferential upgrade

The delayed delivery of LIRA-FEM 2024 and the period for preferential upgrades from previous versions start.

Announcement and preferential upgrade
October 9, 2023
Multi-storey apartment hotel Architect - Chapman Taylor

The delayed delivery of LIRA-FEM 2024 and the period for preferential upgrades from previous versions start.

All clients who purchase LIRA-SAPR 2022 software from October 1 to December 1, 2023, will obtain the current version of LIRA-SAPR 2022 with a free upgrade to the 2024 version when it is released.


Any language and any localization can be used with the new version of the program to work on operating systems. The program supports working with text and symbols from many scripts, including different alphabets, special characters, and symbols.

New options for import of floor plans *.DWG and *.DXF

There are more options to import the floor plans (*.dwg and *.dxf). New features that enable the user to more carefully customize parameters during the import procedure, as well as to create new objects specific to the LIRA-CAD environment.

Enhanced technology for *.ifc import

There are more flexible and fine-tuning settings for the import of object parameters, comparison of materials and cross-sections, assignment of properties of structural elements, and filtering of objects. It means that now the user could specify correspondences between LIRA-CAD object parameters and IFC-object parameters.

Integration with Revit and Tekla Structures

Tekla Structures and Revit-compatible plugins have been adapted for the new version. With the ability to exchange data and models between the two platforms, users may now work even more closely together to enhance collaborative design.

Rhino and LIRA-FEM integration

The LIRA-CAD 2024 plugin is adapted to work in the Rhino 8 (Grasshopper) environment, so the geometry may be transferred from Grasshopper to LIRA-CAD. Due to interoperability between LIRA-CAD and Rhino 8 (Grasshopper), the new features enable engineers to work more productively by applying parametric modelling of buildings and structures to their projects.

LIRA-CAD (Generator)

The technology of dynamic linking with DWG files is introduced. This means that the user can create all the data for the model and storey in one file, which greatly simplifies the process of making changes and managing the project within a single file. This also reduces the risk of making mistakes while working with multiple files.

Model update

A new option to quickly and easily transfer changes from the FEM design model to the LIRA-CAD module. It enables the user to automatically synchronise the LIRA-CAD model with the changes made using VISOR tools, including cross-sections and arrangements of objects.

Object visibility (filter)

The functionality of visibility filter has been significantly updated. It greatly simplifies and speeds up the process of displaying important information. This is a convenient and efficient tool to control visibility depending on object types, with the ability to group objects and customize the display of additional information for both physical and analytical models.

Parametric loads: forced displacement, temperature, mass weights

Added options to specify new load types and transfer all data necessary for analysis. Parametric loads make it much easier to specify different loading variants, which allows for a wide range of problems.

Distributed loads

The new options to generate loads distributed over the finite element area. The influence of the load contour on the triangulation mesh is considered. The new options provide a more familiar view of generating loads on FEs, similar to the VISOR design model.

New API methods

The expanded options of automation tools for model generation and access to analysis results. This section is still under development.

Input tables

New input tables are added. The input tables may be used as an alternative way to specify data for the design model, as a way to import data from other applications, partial import and update of the existing model.

New type of reinforcement for bars - "Wall"

Strength analysis for walls and pylons is based on the linear distribution of deformations in the normal cross-section within the new type of reinforcement, "Wall" (assigned for bars and bar analogues). According to clause of SP RK EN 1998-1:2004/2012, the study of peripheral reinforcement at wall ends is carried out for earthquake design conditions when the "Plastic Wall" mode is activated.

Tracing routine for analysis

Tracing routine for analysis of steel elements by EN 1993-1-1:2005/AC:2009 is available.

Custom section types in nonlinear analysis

A physically nonlinear analysis of sections from the Cross-section Design Tookit module is implemented, i.e., a cross-section with an arbitrary shape and components may be assigned to a nonlinear bar FE in the design model. Such an element may be step-type, iterative, or iterative with unloading.

Nonlinear behaviour of soil

Max compressive strength of soil is considered for the nonlinear behaviour of the elastic base of bars and plates.


Calculation for moduli of subgrade reactions is available for inclined slabs and bars.

Soil properties, groundwater table

Extended soil properties to clarify calculations of foundation bases and pile stiffnesses. The groundwater table may be defined through the properties of boreholes.

Modelling of friction seismic isolators

For friction FEs (263/264), "unloading with initial stiffness" is implemented. The option enables the user to realise the hysteresis behaviour of the FE under cyclic loading.

A new type of force for bars

Calculation of a new type of force - lateral-torsional moment Tw for constrained torsion (model type 6); this force is considered in check of steel structures.

Redistribution of masses

A new option to specify a set of mass redistribution groups in elements of the design model for dynamic analysis. This functionality makes it possible to fulfil the requirements of building codes by considering the torsion effects caused by uncertainties in the location of masses and spatial variations in seismic motion.

Damping in spectral method of analysis

Damping ratio for each dynamic load case may be considered.

Evaluation of the bearing capacity of piles

Automated evaluation for bearing capacity of piles based on forces calculated by load cases and DCL.

Rules to modify forces

Modification of forces from DCL in bar and plate elements to ensure conditions of strength and ductility in structural design.

Flexible customization for directions of PRB

New types of PRB with control of DOF (degrees of freedom) for kinematic restraints. Previously, there was only one type of PRB "All degrees of freedom".

Pushover analysis

For Pushover analysis, new option to set the user-defined steps for application of horizontal earthquake load. Damping ratio is considered. The output of initial spectrum is available.

Sets of drawings

New option to prepare documentation for the pile arrangement and types of reinforcement. Reinforcement types (templates for the arrangement of rebars in the body of the corresponding RC structural elements) may be exported to a DXF file or placed on drawing sheets as editable tables.

Total list of reinforcement

New interactive tool to evaluate the quality of reinforced concrete (RC) design projects. This tool enables the user to compute the total steel consumption in RC elements and the volume of concrete required to produce these structures.

Large screen shots

Option to add screen copies to the Report Book and then customize the size of the virtual canvas.

New tables of results

New tables of input and output data to evaluate the analysis results and prepare documentation for the input data of design model.

Have an idea

User feedback is realised, the program becomes more user-friendly, etc.

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