# News

## InfoCAD 21 (October 2021)

The following chapters provide you with the latest information and the most important changes with respect to the previous version 20 from 2020 (PDF-Info).

### General Information

- InfoCAD can be used without any restrictions under Windows 11.
- Columns for calculation theory and pre-deformation have been added to the Load Groups table to simplify editing.
- Predeformations can now be labeled.
- A renumbering function has been added to the layer dialog.
- The function "Calculate Ix" can now also be executed if a group of member cross-sections has been selected.
- When defining new cross-sections for design objects, the rectangle cross-section type is now suggested.
- In the printout, tables are now automatically optimized in their width.
- The dialog for defining load combinations has been fundamentally redesigned. All action groups are now visible at the same time.
- The 'large crosshair' can be switched off in the extras menu. A native Windows cursor is then used for coordinate input. This is particularly suitable for operating a system via VPN, e.g. from the home office or for terminal server solutions.
- The function 'Copy objects' in the construction state window has been extended by the design objects.
- In the result display option 'Section', lines, arcs, circles or NURBS can be selected as an alternative for direct section input.
- In the context menu it can be selected that the drawing objects 'Image' are always displayed in the background.
- For area elements, the resulting shear force qr of a load case can be displayed vectorially. This makes it easier to evaluate the influence of a support, for example.
- The number of allowed polygon points of a cross-section polygon has been increased to 999.
- When converting drawings (e.g. from DXF) to polygon edges/holes, arcs and circles are now automatically approximated by polygons.

### Design according to EN 1992-1-1 and EN 1992-2 with NA

- The new material types CX-EN and CX-EN-D allow the free definition of all relevant parameters deviating from the table values of the standard. This allows, for example, a nonlinear system analysis for measured material properties in building in existing structures.
- In the ultimate limit states, bending and shear reinforcement can now optionally be called up separately for each design situation. This can be activated in the calculation settings.
- In the bridge design analyses, the denomination of the effective wall thicknesses t
_{ef}of box sections have been adapted to the nomenclature of the standard. An explanation is available in the F1 help of the shear section dialog. - The checks were adapted to the new version of DIN EN 1990 from October 2021.
- A new option allows to design without taking predefined reinforcement ratios into account. This allows savings to be made, for example, for cross-sections with different specifications on the top and bottom sides.
- Logging of user-defined traffic load models (UDL, TS) has been revised and extended.
- The logging of the checks was supplemented by a detailed documentation of the design-relevant material parameters according to Table 3.1 and for the user-defined concrete classes CX-EN and CX-EN-D.
- The variation coefficients of the prestressing is now also taken into account when calculating the reinforcement required to maintain the crack width.

### Bridge Recalculation according to the Recalculation Guideline

- The new material types CX according to DIN 1045-1 or DIN FB 102 and CX-EN-D according to DIN EN 1992-1-1 allow a free definition of material properties. This allows a recalculation for concrete classes that deviate from the table values of the applicable basic standard.
- In the shear force and fatigue check according to the main tensile stress criterion, the existing shear force reinforcement is now increased by the existing torsion reinforcement to determine the reinforcement ratio in Table 12.2 of the recalculation guideline if the option 'Use reserve' was selected in the check specifications of the cross-section.
- With regard to the designations of the basic standards, the effective wall thicknesses tef of box sections have been renamed in the program. An explanation is available via the F1 help of the Shear Cross Section dialog.
- The lever arm according to Eq. (12.16) of the guideline can now also be selected in check level 1.
- In accordance with chapter 12.5.3 of the guideline, the prestressing variation coefficients can now be defined separately for the decompression and stress verifications as well as for the crack width verifications.
- When using the free concrete classes CX (DIN TR 102) or CX-EN-D (DIN EN 1992-2), all verification-relevant characteristic values are now logged in tabular form.
- The determination of the steel tensile stresses in the ultimate limit state is now carried out depending on the check selection for the required or the existing reinforcement.
- The minimum strength classes according to DIN TR 102, chapter 3.1.4 (4), are now checked as part of the design.

### Recalculation of Railroad Bridges

For the recalculation of railroad bridges, RiL 805 of March 1, 2021 permits a reduction of the safety coefficients on the load side in accordance with M 805.0102.

For the application of DIN 4227, this results in the following modifications in the verifications in accordance with Technical Note TM 057/2004/011 of DB Netz AG:

- Adjustment of the stress/strain curves with the factors according to M 805.0202 for concrete, reinforcing steel and prestressing steel within the scope of bending design.
- Adjustment of the limit stresses according to DIN 4227, chap. 12.3.1 (2), for classification in zone a and zone b.
- Reduction of the table values for the calculation of the compression strut gradient in the verification of the inclined principal compressive stresses in zone a.
- Adjustment of the limit values for the main tensile stresses (state I) or shear stresses (state II), if shear reinforcement must be verified.
- Reduction of the table values for the calculation of the compression strut gradient for the design of shear reinforcement.
- Reduction of the stirrup strength for the shear design.

The calculation settings are selected in the 'DIN 4227' folder of the database.

### Steel Checks according to EN 1993-1-1

- For polygon and database cross-sections, one of the cross-section classes 1 to 3 can now be freely selected. Thus, for example, non-parameterizable cross-sections can be verified elastically-plastically, for which buckling is not relevant.
- The verifications have been adapted to the new version of DIN EN 1990 from October 2021.

### Nonlinear System Analysis

- In the Finite Element module, an automatic reinforcement increase can now be selected if the system consists only of beam elements.
- When calculating concrete structures, the shrinkage of the concrete can now also be taken into account.

### Dynamics: Response Spectra Method per DIN EN 1998-1:2021 and SIA 2020

- The evaluation of response spectra according to EN 1998-1 (Eurocode 8) has been supplemented by the NAD Germany DIN EN 1998-1:2021.
- The evaluation of the response spectra according to SIA 261 was supplemented by the new version from 2020.

### Dynamic Train Crossing

The dynamic train load was adapted to the new edition of RiL 804 of June 1, 2021. In detail, the following changes resulted:

- The corrected load positions for HLM-A4, HSLM-A6 and HSLM-A10 were adopted.
- The new train type 'IC (pushed)' was added.

### Nonlinear System Analysis / Dynamics

- The new pushover calculation for verifying the earthquake resistance of structures has been adapted to the currently published DIN EN 1998-1:2021.

### IFC / BIM

- For the open standard for the exchange of BIM building models, the latest version IFC4 has now been implemented in addition to the existing version 2x3.

This applies to both the analysis and the coordination model.