New option to select the unloading method for each given piecewise linear material stress-strain diagram (14). This parameter is used for iterative physically nonlinear FE when modelling the process of material unloading with account of its nonlinear properties.

New commands that allow the user to create plates on the free faces of selected solids and on the surface of solids by the specified plane and angle of deviation. Such options will be helpful, for example, when creating target plates of plate analogue; elements of convective heat transfer on faces of solids of heat conductivity; when modelling 3D unlimited soil body, etc.

For plates and bars on an elastic foundation, the calculation of the total stiffness of the restraints along the Z-axis by C1z data is implemented (the initial specified stiffness may change after recalculation of the elastic foundation of the model attached to the soil model).

For 1-node elements FE 51, FE 56, FE 57, that model elastic foundations or piles, the specified or recalculated stiffness Rx, Ry, Rz is considered when calculating the total stiffness of restraints along the X, Y, Z axes.

Note. When the stiffnesses of restraints are summed up, appropriate sets of subgrade moduli C1z (property set C) and sets of coefficients to the modulus of elasticity k_E (property set D) are considered according to the selected subproblem. The stiffnesses of the 1-node elements FE 51, FE 56, FE 57 are summed up with account of the corresponding k_E coefficients.

New options to display on the model the following data:

• comments on the assigned stiffnesses;
• contours for uniformly distributed load for plates and solids;
• overturning moments relative to a specified point;
• numbers of assemblage groups;
• change in the size of the colour zone when generating mosaic plots of properties and results at nodes;
• directions of the principal axes of the bars calculated as a result of physically nonlinear analyses.

In the dialog box for creating design options, there is a new command that allows you to create a new design option for the model based on the template of the selected design option.

New command to display in a new window the nodes and elements previously selected on the model.

Now it is possible to copy and add (from the Clipboard to the current problem) materials for masonry reinforced structures for all building codes and design options.

When design model is automatically divided into structural blocks Plate, Wall, there is a new option to consider gaps in their contours (if there is no common nodes) in one plane. This option also affects the generation of a regular Block.

New option to automatically generate structural blocks (column, beam, slabs) when creating a 3D frame. It is also possible to automatically generate grid lines and elevations.

Import of arc grid lines from the LIRA-CAD module is supported now. The arc grid lines can be edited using the following tools: rename, define Z-axis snap, and delete. It is possible to check the presentation and parameters for selection of nodes and elements when clicking on the tag of the arc grid line or when selecting several grid lines with the rectangular 'selection window'.

New command to delete all grid lines and height elevation on the model.

New option to rename height elevation to the existing functionality for renaming grid lines.

When you add bar elements and divide bars into several parts, there are commands that allow you to unite new elements into a structural block and structural element.

To check the input data of structural elements, there is a column with the total length of the bars included in the structural elements.

When selected bars are united into one, there are options that enable you to check the coincidence of StE types, the offsets, restraints and PRBs. If the corresponding checkboxes are selected, the chain of selected bars will be united only in the regions where the corresponding parameters of bar coincide or in regions between nodes with restraints or PRBs.

For more convenient visualisation of the plates, a projection on the XOY-plane (top view) is added; the Y-axis is horizontal here.

New option to sort by parameters in the dialog box for perfectly rigid bodies.

Now it is possible to place a rectangular grid in all four quadrants of the plane relative to the centre of the grid.

• When offsets for bars are added, it is possible to consider the angle of pure rotation. 

• When the elements are copied or moved by two nodes, either by rotation or symmetrically (mirror copy), there is an option that allows you to rotate the local axes of the bars and assign the calculated angle of pure rotation. The specified sections of bars, loads in the local coordinate system, and offsets in bars are oriented according to the new location of the local axes.

• It is possible to copy selected properties for load cases: type of load case, subproblems, type of dynamics, account of static load cases (mass accumulation for dynamic analysis), selective account of masses in elements, groups of mass redistribution in elements, eccentricities of mass application. It is also possible to copy the values of increasing factors fvk and damping ratios ksi for earthquake load cases. 

• For the list of material properties of reinforced concrete structures (type/concrete/reinforcement) and masonry reinforcing structures (masonry/reinforcement/strengthening), there are new options: 1) to find in the list the data assigned to the elements selected on the design model, and 2) to find on the design model the elements with the data highlighted in the list. 

• A new option "Ignore parameters of filters" that allows you to temporarily disable the reaction to the set filters (selection criteria) in the "Polyfilter" dialog box.

• Added option to edit the angle of deflection for adjacent bars; for this angle, it is allowed to combine the bars into one structural element (default 2.3°). Now, if the user specifies a larger deflection angle, it will be possible to combine curved elements of beams or columns into a single StE.

• Option to customise the hotkeys and add corresponding commands to user-defined toolbars now applies to all flags of drawing (options for setting parameters for presentation of design model and information on it), as well as, mosaic plots of assembled and disassembled elements.

• Option to select groups of structural elements, unified groups, unified groups of structural elements and structural blocks with the selection window. 

• For bars, a new option to display section types and geometric properties on the model.

• A new command that allows you to change the restraints at selected nodes.

• The number of colours may be defined for the discrete colour palette (the palette is evenly divided within the extreme values) and to the colour palette by values (each division corresponds to a unique value of the mosaic plot of the displayed parameter).

• The specified graphs of dynamic loads at nodes (seismograms, piecewise linear (polyline) load with uniform step, accelerograms in relative units) may be presented with account of specified coefficient to load/conversion coefficient of relative units to acceleration units.

• When you define the data to compute the load at the specified nodes of the design model from its remaining part (load on the fragment), there is a new option to exclude nodes that do not belong to the elements of the fragment from the analysis.

• The super-elements may be automatically snapped to the main model, in case super-elements were moved from a subdirectory to the directory with the main model.

• When you define the default parameters for the new problems and new design options, it is now possible not to delete incomplete or conflicting data for reinforced concrete and steel analysis before analysis procedure.

• Modified and extended with new commands the panels of the ribbon interface, as well as the menus and toolbars of the classic interface.