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Feb 12, 2007 Modifications to LIRA version 9.4 in comparison with release from November 7, 2006.
Solver
BRIDGE solver: restored availability for all types of analyses, added check for calculation of forces in influence lines.
Dynamics plus solver: presentation of repeated animation of forced vibrations is speeded up.
Added feature: account of stiffness of elastic foundation inside absolutely rigid body.
Modified analysis on dynamic load for module 33 (Uzbekistan).
Restored option: calculation of moments in elements of trusses (FE type 1 and FE type 4) from local loads.
LIR-VISOR
Added option: DCF table may be specified according to DBN B.1.2- 2:2006 (Ukraine).
Restored option: interactive tables of LITERA system may be generated by DCF.
Modified dialog boxes for defining dynamic load in modules 43 (Kazakhstan) and 45 (Algeria).
Time history analysis: when calculating DCF, parameters for such calculation are assigned automatically. DCF table defined by the user is ignored.
Enhanced presentation of colour palette for mosaic and contour plots for scrolling; range values are presented exponentially.
Undo and Redo commands are available for editing measurement units.
Added option: import of design models from *.IFC files (Allplan, Revit, ArchiCAD, ADT, etc.) with automatic generation of FE mesh.
Added option: import of design models generated in LIR-KM module with automatic generation of FE mesh.
Import of design model from floor plans (*.DXF files): improved for window and door openings.
Restored availability of program under OS Win98 and OS WinNT 4.0.
SOIL
Enhanced work with large problems (size of input data file is reduced, loads on soil are exported from LIR-VISOR module in less time, less system requirements are necessary).
Added option: values of loads on soil may be presented as mosaic plots.
LIR-STC
Modified calculation of deflections on envelope diagrams in local mode.
Updated steel tables for square pipes.
LIR-ARM
Enhanced analysis of reinforcement in bars.
Added option: in slabs and shells it is possible to define diameter or spacing of rebars for analysis according to serviceability limit state.
Enhanced analysis of longitudinal reinforcement in bars according to serviceability limit state.
Modified analysis of transverse reinforcement in bars according to SNIP 52-01-2003.
Enhanced algorithm for analysis of longitudinal reinforcement for ring sections.
LIR-STB
Added feature: account of specified measurement units in export of forces from LIR-VISOR module.
LIRA 9.4
Updated Help system for all modules of the program in Russian/English.
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Version History 
