The "Moving load" tool is mentioned to specify traffic loads on different types of structures: stylobate pavement, floor slabs of parking, bridge structures, motorways, etc.


After the installation of the LIRA SAPR application on your personal computer, launch it by left mouse double-clicking on the shortcut icon (during the installation keep the path to the Program Files folder as suggested by default C:\Program Files\LIRA SAPR\LIRA SAPR 2020).


In this video guide, we will learn the interface of the program LIRA-SAPR, and also perform the calculation of the beam on two supports with a uniformly distributed load.


New document system Report Book includes interactive screen copies of design model and conceptually new tables with output data from FEA and analysis of RC structures. When you save the screen copy, the state of design model is saved together with the image presented on the screen. It is possible to return the model to this saved v...


This video demonstrates the procedure for coordinating the local axes of plate elements. This procedure allows to obtain forces and stresses oriented with respect to the coordinated local axes as a result of the analysis.


In this video there will be introduced new features in SAPFIR 2022. We will discuss automatic load generation on beams though proxy objects.


  • 22 June 2016
  • LIRALAND

LIRA SAPR: METEOR

  • 22 June 2016
  • LIRALAND

LIRA SAPR: METEOR

METEOR (Method of unified complete result) Enhanced options for MODEL VARIATION system.
New system that enables the user to merge problems with the same topology ' nodal coordinates, FE model, geometry of sections. Problems may differ in load cases, stiffness and boundary conditions. The merged problem will contain topology,...


  • 18 September 2020
  • LIRALAND

Element Type Assignment

  • 18 September 2020
  • LIRALAND

Element Type Assignment

After creating a model, it is recommended to check the type of elements.


To run any command on objects included in the design scheme (deletion, stiffness assignment, application of loads, etc.), first of all you must point to the corresponding objects by selecting them from the general scheme. To delete the object, it is necessary to indicate it (further, the operation of selecting model objects will be...


  • 15 September 2020
  • LIRALAND

Restraints Assignment

  • 15 September 2020
  • LIRALAND

Restraints Assignment

The construction being designed should be fixed in the space, so the user should select the nodes to be fixed and the directions they should be fixed.


Thermal loads

Thermal loads

The article describes how to model thermal loads in SAPFIR. To model the thermal loads in LIRA-CAD module of the program, use the specialised tools available on the "Analytics" tab, on the "Analytical load" panel, in the "Loads" drop-down list.


  • 16 September 2020
  • LIRALAND

Information about model components

  • 16 September 2020
  • LIRALAND

Information about model components

In LIRA SAPR, a command Information about nodes and elements can be found on the Select toolbar. It allows not only to get the full information about all components of the model but also to edit many of them.


Copy by parameters, copy by rotation, mirror copy, copy by one node


  • 18 September 2020
  • LIRALAND

Packing a model

  • 18 September 2020
  • LIRALAND

Packing a model

In the process of creating a model, sometimes user has to repeatedly delete some elements and then add others.


Let us consider an example of analysis of heat transfer of a brick house external wall.


This paper explores two main methods of running LIRA-FEM on a Mac: virtualization through Parallels Desktop for M-series processors and using Boot Camp for Macs with Intel processors. We will go over the benefits and drawbacks of each approach. Finally, we'll include a detailed installation tutorial for LIRA-FEM using Parallels...


  • 23 July 2015
  • LIRALAND

LIRA-SAPR: Fragmentation

  • 23 July 2015
  • LIRALAND

LIRA-SAPR: Fragmentation

This tutorial illustrates options of the Fragmentation command for the comprehensive detailed visual examination and possible modification of design model as well as for the evaluation of analysis results


From version 2016, the user could use templates in the Report Book in order to facilitate generation of documents and speed up this process. Figure 1 demonstrates the 'Steel truss' template that includes 3 chapters and 14 elements.



  • 12 May 2023
  • LIRALAND

Snow mound in SAPFIR 2022

  • 12 May 2023
  • LIRALAND

Snow mound in SAPFIR 2022

This video shows how to collect snow load automatically and to apply snow mound in LIRA-CAD.