User Tips

This page provides you with tips on how to use the InfoCAD program system and answers frequently asked questions.

Creating Load Groups for Nonlinear Calculations

To perform nonlinear calculations (e.g., second-order theory), you first need to create complete load groups on the basis of existing load cases. This can be done automatically:

Click Combinations… in the Combination dialog.

A list will appear containing all the variants resulting from the combination description.

You can select the combinations you want from the list and then have them organized in load groups.

To create a load group for the extremal column force derived during linear calculation, activate the appropriate result (e.g., min Nx).
Now point to the column in question and click Combination Info from the shortcut menu.

Right-click in the display window. You can now create a load group based on the load combination determined at that location.

Identifying Nodes or other Elements in the Event of an Error Message

If an error messages appears during a calculation, the objects specified (nodes, elements, loads, etc.) can be easily identified by double-clicking the corresponding message. In the graphical user interface the respective object is marked and the view centers on it.

Explanation of InfoCAD Lateral Force Design according to DIN EN 1992-1-1/1992-2

The design method described in DIN EN 1992-1-1 and 1992-2 is based on a truss model with modifiable strut angle theta according to Zilch/Rogge (2002, P. 333 et seq.). Using this method, the minimum strut angle is determined load dependently as opposed to the concept of the basic standard EN 1992-1-1:

≤ 3.0 for normal concrete according to DIN EN 1992-1-1, Eq. (6.7aDE)
≤ 2.0 for lightweight concrete according to DIN EN 1992-1-1, NCI 1.6.2(NA.2)
≤ 1.75 according to DIN EN 1992-2, Eq. (6.107aDE)

 

The program suggests the value 1 (45° strut angle) for cot theta in the section dialog. You can freely adjust this, choosing any value between 1.0 and 3.0 (DIN EN 1992-1-1) or 1.0 and 1.75 (DIN EN 1992-2).

In the calculation the value for cot theta is restricted to the permitted range. The actual effective strut angle of each check location is documented in the detailed log.

For instance, if you enter 3, the smallest permitted strut angle is always used for the calculation. This results in the minimum lateral force reinforcement Asw, and also the smallest absorbable lateral force VRd,max.

The ability to freely choose cot theta offers you a high degree of flexibility and should not be confused with the simplified method according to DIN EN 1992-1-1/1992-2, NPD 6.2.3(2).

References

DIN EN 1992-1-1/NA:2013/A1:2015-12

National Annex – Nationally Determined Parameters
Eurocode 2: Design of Concrete Structures - Part 1-1: General Rules and Rules for Buildings.
Publisher: DIN Deutsches Institut für Normung e.V., Berlin.
Beuth Verlag, Berlin 2015.

DIN EN 1992-2/NA:2013-04

National Annex – Nationally Determined Parameters
Eurocode 2: Design of Concrete Structures – Part 2: Concrete Bridges – Design and Detailing Rules.
Publisher: DIN Deutsches Institut für Normung e.V., Berlin.
Beuth Verlag, Berlin 2013.

Zilch, K.; Rogge, A.

Bemessung der Stahlbeton- und Spannbetonbauteile nach DIN 1045-1
(Design of Reinforced Concrete and Prestressed Concrete Elements
according to DIN 1045-1).
Beton-Kalender 2002, Vol. 1, P. 217-359.
Ernst & Sohn Verlag, Berlin 2002.

Determining the Contributing Load Cases and their Weighting for a Combination Result

Right-click the desired element. In the shortcut menu the 'combination info' option appears. This lists the currently active combination result of the contributing load cases with their respective weighting.
The function is only available if the display of results for a combination is enabled.

The combination info is available for node deformations, internal forces and soil pressures of all superpositions (load case combination, DIN 18800, DIN Technical Report, etc.).

A load group, e.g. for a nonlinear analysis, can be created automatically from this load collective. Therefor click with the right mouse button on the representation area of the dialog.

Creating a Print List for the Output of Results

Print jobs can be stored in the print list. These jobs can contain any kind of system view, for instance, graphical illustrations as well as tabular system data. As the print list only contains a pointer to the desired views and tables, all changes to the system are reflected in the list.

Transferring Monitor Contents to the Log or other Programs (Clipboard)

The contents of the display area can be copied to the clipboard and pasted into a log file or third-party programs.
To do so, hold down the ALT key and pull open a window with the left mouse button. Use the Copy command (or 'Ctrl + C') to save the picture to the clipboard. The picture can then be pasted ('Ctrl + V') anywhere within a calculation log.
You can also transfer the contents to any program that supports the WMF transfer format (generally all Windows programs).

Printing Selected Data Sets

All data sets selected in the database can be sent directly to the printer. When selecting a closed branch, the selection includes all data sets belonging to that branch. Before printing, the print page(s) can be checked using the print preview.

Exporting or Importing Table Contents

The contents of a table can be transferred to other programs (for instance, 'MS-Excel') using the clipboard. To do this, select the desired lines and press 'Ctrl + C' to copy them to the clipboard. The contents can be pasted ('Ctrl + V') at any location.
When pasting the tables, make sure that both tables have the same number of columns.

Selecting Object Groups

Use the 'Select group' command to quickly select required objects.

This type of selection is also available within the commands, e.g., next to

Carrying out Checks for an Element Selection

Checks and calculations can be carried out for individual elements or element groups (for instance, for a section type). To do this, all you need to do is select the corresponding elements or element groups. The calculation menu then offers the 'Selected elements' option. The calculation selected there will be carried out for these elements only.