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Frequently Asked Questions (FAQ)
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For this, use the "Open" command in RSTAB 7 under the "File" menu.In the "Open" dialog box, you can not see the RSTAB8 files at first because only files for the program versions RSTAB 7 (and older) are displayed.In order to be able to see all files (including the RSTAB 8 files) in a specific directory or folder, you have to change the File Type to "All Files" in the lower part of the dialog box. Then, you will also see the newer files for RSTAB 8 and can open them in RSTAB 7.Important: We do not guarantee compatibility when opening an RSTAB 8 file in RSTAB 7. Thus, it is possible that the file or the model contained in it will be damaged. The module data and the results are also deleted.The same procedure is also possible in RFEM 4.
AnswerRFEM includes a direct link to Autodesk Revit. Compatibility information for any version can be found in the Update Reports.
AnswerThis function cannot be assessed or determined at the level of the basic program. This issue is fixed at the level of add-on modules such as RF-STEEL EC3 or RF-DEFORM. The second module is generic and can be used for any rod. For more information, visit: https://www.dlubal.com/en-US/products/rfem-and-rstab-add-on-modules/others/rf-deform .
AnswerYes, that is possible in principle. However, there are some things which have to be taken into account.
- It may be useful to keep RSTAB as a license so that you can easily edit old projects in the future.
- The RSTAB models can be opened by RFEM. The structural and load data is transferred apart from a few exceptional situations. For add-on modules, reworking or a new input may be necessary due to the different data formats (RFEM requires surface and solid elements in addition to RSTAB).
- Any running service contracts must also be converted.
- As there are different product families, there is no standard price for an upgrade. We can provide you with a price information after having evaluated the relevant case. Contact our sales department, please.
AnswerFor the RFEM program family, we can provide you with a group or individual training courses.
Still not found the training wanted by you? Please contact our sales department. He will work out a tailor-made solution together with you to reach success in your training.
- Our group training courses may involve either basic training or a special Eurocode training course. These trainings take place in our office rooms. Further information as well as current dates and prices can be found at: https://www.dlubal.com/en-US/support-and-learning/learning/group-training-at-dlubal-software
- The individual training courses are usually one-day training courses with training content specifically oriented to your needs. They can take place in our or your office on a convenient date. For more information and prices, visit: https://www.dlubal.com/en-US/support-and-learning/learning/individual-learning
- Individual online training courses represent a flexible and also cost-effective training option. As a rule, we can also plan these at short notice and orient them according to the desired topic area. Based on our experience, online training should not exceed a duration of 4 hours.
This is a bug that occurred in version 5.10. It has been fixed in current versions. The error was caused by a Windows update that set automatic delete of temporary files and folders. The program has created a folder to store temporary files or calculated results. Unfortunately, before the calculation ran out, Windows deleted the folder. The program had nowhere to store the data and displayed a message: "Write Data () failed of module RF-STEEL EC3". Unfortunately, no data can be saved. To resolve this issue, disable the Windows "Temporary Unused Erase Feature" or install a newer version of RFEM.
RSTAB also already uses the advantages of parallelization. Basically, the parallelization of RSTAB 8 and RFEM 5 can be summarized as follows:
Parallelization of program parts in RSTAB 8 and RFEM 5 (not included in the calculation)
The advantages of the parallelization are primarily used in the printout report. In particular, browsing the printout report (i. h. retrieving the table of contents) with several cores.
For the future versions, it is planned to use the parallelization more frequently. For example, the creation of the printout report should be almost always parallelized.
There are two different ways to use multiple cores:
Parts of a program process run in several threads at the same time. It is recommended to use only physical cores, not logical (virtual). The experience gained with scientific and technical calculations has shown that the parallelization has the advantage of a maximum of approximately 3.5 times the acceleration, regardless of the number of cores. Some processes, such as the iterative equation solver, are not suitable for such a parallelization.
Individual calculations are performed in individual threads. For example, you can run four solvers in four threads to calculate four different load combinations.
At present, these two types of parallelization are not yet used in RSTAB. However, RFEM plans to use Outer Parallelization with RSTAB in the future.
In RFEM 5, internal parallelization will already be used in some program parts. These are, for example, the combination of the local stiffness matrix and the direct equation solver.
The program part named "FemBase" is massively parallelized: It calculates the result combinations and returns all results to the graphics, tables, and sections. He can read the result of three load cases in three threads and, for example, calculate the result combination in the fourth thread.
However, the outer parallelization is not yet used. However, work is already in progress on this.
That is possible. If you select "All Files" for the file type in section "Open" of the RSTAB 7, the RSTAB 8 files will be visible as well. They can be opened.
A warning message appears because it is, of course, not possible to consider features that were not contained in the older version.
Another possibility is to rename the file from *.rs8 to *.rs7 and open it directly. The warning message appears even then.
This procedure is the same for RFEM.
I have designed a DuenQ cross-section resp. general cross-section in STEEL EC3, in an older model of RFEM 4 or RSTAB 7. At that time, a cross-section class 1 or 2 was determined. Now I have opened the model in RFEM 5 and the cross-section is only classified acc. to Class 3 or 4. What is the reason? Was the design more economical at the time?
AnswerThe design of general cross-sections or DuenQ cross-sections is always performed elastically in STEEL EC3, i.e. according to Class 3 or 4. Since the conditions of interaction are restricted to some cross-sections, no plastic design is possible for any cross-section shapes. In RFEM 4 or RSTAB 7, however, it was possible to classify a cross-section as class 1 or 2, even though the subsequent design was carried out elastically.To eliminate this ambiguity and to create consistency, the classification has also been changed to cross-section classes 3 and 4.
It appears that the versions RFEM 5.18.01 and Halfen HDB 13.21 are not compatible.In RF-PUNCH Pro, I receive the error message saying that the design program Halfen HDB can not be found. This is installed and registered with me.What can I do?
AnswerIn fact, there is a shortcoming in the interface between Halfen HDB (version 13.21) and RF-PUNCH Pro (5.18.01). We have fixed this deficiency by updating it.You can find the download link for the update via the download area of your Dlubal Account or directly by the message of our hotline support.
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