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Frequently Asked Questions (FAQ)
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The main program RSTAB/RFEM has to be registered in Windows for a successful import. You can start the registration manually once again when problems arise. Start DLInstaller.exe by right-clicking the function --> "Run as administrator". Then switch to the tab "COM" and select the version you are using (see image). Continue by clicking "Tab" to start the registration. Then start RFEM/RSTAB to test the export/import.
DLInstaller.exe (195 kB)
AnswerOptimal system requirements for RFEM (requirements for RSTAB are identical or less):
· Operating system Windows 7 / 8 / 10 64 bit · Quad-core processor by Intel or AMD · 8 GB RAM · Up-to-date graphics with GPU by NVIDIA or ATI
RFEM 5 and RSTAB 8 do not run on computers with Windows 95 / 98 / Me / NT / 2000, Linux, Mac OS, or server operating systems.
For design of very large models in RFEM, you should consider extending the main memory.
When purchasing a new computer, it should actually always comply with the recommended configuration since the current systems meet or greatly exceed the system requirements mentioned above.
Bei der Ermittlung der Schiefstellung muss in RSIMP auch das Nachweisverfahren berücksichtigt werden. In Maske 1.2 können Sie in Spalte B nach einem Klick in die Zelle die Definitionsart festlegen.
Gemäß El. (201) brauchen bei Anwendung des Nachweisverfahrens Elastisch-Elastisch nur 2/3 der Werte angesetzt zu werden.
Stellen Sie dagegen als Definitonsart "DIN 18800 E-P" ein, so wird mit 1/200 gerechnet und Sie erhalten Ihren erwarteten Wert.
In general, you have to pay attention to the following:
- The members must have the same member rotation.
- The direction for the input of imperfections is related to the local axes y and z. A relation to the principal axes u and v is also possible in case of deviating principal axes.
- It is also possible to influence the position by a change of signs for the imperfection value.
Therefore, when defining imperfections, it is often useful to display the local member axis systems: select a member by right-clicking it and activate the display of the local axis systems in the shortcut menu.
In the "Group" column, you can see how the individual load cases are summarized in groups as they are considered in the combination criterion.
In the example picture, load cases 3 to 6 are within Group 1. Load cases 11 and 12 belong to Group 2.
Now, we can imagine some brackets enclosing the groups: 1.35*LC1/p + (1.5*LC3 or to LC6) + 1.5*LC7 + (1.5*LC11 or 1.5*LC12)
The individual group numbers help to understand the combination so that it can be interpreted more easily. This function is especially useful for combinations with several "and", "or" assignments.
To copy including loads, proceed as follows:
- Select the objects to be copied (nodes, members, and so on).
- In the Edit menu , click the Move or Copy Open button (alternatively, right-click the selected objects and the Move, Copy shortcut menu option ).
- Specify under "Details" that the copying including loading is to be carried out. In this way, the loads of all load cases are included in the copying.
In the case of biaxial loading it may happen that the combined internal forces do not lead to the maximum stresses. Therefore, there is the option "Calculate stresses from single load cases in RC and then combine stresses according to RC criteria" set by default. Please check in the Details dialog box if this calculation method is set.
Further inforation about the stresses of result combination can be found in the RF-/STEEL manual.
The plane (2D) or spatial (3D) model type can be set under "General Data".
You can access the "General Data" dialog box of your structure by clicking menu:
"Edit" -> "Model Data" -> "General Data".
It is also possible to access the general data of the structure by right-clicking "Model Data" in the Data Navigator and selecting "General Data" in the shortcut menu.
The model type - plane (2D) or spatial (3D) - can also be changed subsequently.
There is no connection between the folder, where a model is to be saved, and the RFEM or RSTAB project.
If your answer to the question "Do you want to create a new project for this folder?" is No, the model will be saved in this folder. However, it is not assigned to any project then. As a result, there is no project name in the printout report, for example.
Therefore, models should always be assigned to a project. The project itself only represents a connection to a folder. Project Manager provides an overview about all projects. Therefore, answer Yes. Then a new dialog box opens and you are asked to enter a project name for the existing directory (see Figure 01).
If you want to completely prevent the message, you can open the dialog box with the corresponding setting option by using the Project Manager menu "Edit → Program Options" (see Figure 02).
Yes, an import of RSTAB systems in RFEM is possible: Select the relevant model in the Project Manager. Open the context menu and select the option "Open With" (see picture).
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