In addition to our technical support (e.g. via chat), you’ll find resources on our website that may help you with your design using Dlubal Software.
Frequently Asked Questions (FAQ)
Customer Support 24/7
AnswerNo, that is not possible. The report can not be opened or managed via the COM Interface. The only thing that can be done is to access the number of created reports in a list.It is possible to access the report templates. This is explained in the following FAQ. However, this can not be controlled by the COM Interface of RFEM/RSTAB, but by a general Windows functionality.
AnswerYes, it is possible to integrate the complete frame 'Snow, Wind and Seismic Zone Maps' including the search function, location description and load output by means of the URL in other applications.After entering the "Full Screen" mode, you receive the required URL in the browser address bar.For determining the location-specific building loads, there is – additionally to this - an online web service in the background. If providing the necessary data (location, load type, load standard, etc.), this web service allows the data to be called up digitally for transfer to an external application.→ see FAQ
To ensure that the cross-sections are recognized when directly importing girders and columns in REVIT, a corresponding family must be available for these components in the REVIT project.
If this is not the case, you can import a suitable family into your project during the import process. The interface then independently recognizes all other cross-sections and creates the corresponding cross-sections within the family.Figure 01 does not show a 480/520 (mm) timber column. After importing the correct family type, this cross-section and all other cross-sections of the same type are recognized and the import process is successfully completed.
There are two options for the export to Advanced Steel (Figure 1):
- Export via the product interface
Export the data to an stp format via the interface of the German Steel Construction Association and import this file into the target program.
You can find this interface in the "Formats for Frame Structures" field in the "File" → "Export" menu.
- Export via the Advanced Steel interface
Export the data to an smlx format via the "Advanced Steel" interface and import this file into the target program.
You can also find this interface in the "General Formats for CAD Programs" dialog box in the "Export" dialog box.
With the COM interface, you can access most operating elements as well as results of the following programs or add-on modules:
- RF-/STEEL EC3
- RF-/TIMBER Pro
- RF-/DYNAM Pro
AnswerThe student version also supports the interface to REVIT.
- Bidirectional interface between RFEM / RSTAB and Revit Structure
RFEM and RSTAB communicate via a direct interface to Revit Structure, enabling bidirectional data exchange. Structures modeled using RFEM and RSTAB can be easily transferred to Revit Structure at the touch of a button.
A detailed overview of the interfaces and the BIM-oriented planning is available on our homepage in the section " Building Information Modeling (BIM) ".In addition, there are already numerous webinars on BIM , which can be viewed on our homepage as a video.
- Direct RSTAB / RFEM interface to Autodesk AutoCAD
- Direct RSTAB / RFEM interface to Thekla Structures
With the direct integrated interface, Tekla Structures' analytical model of detailed systems can be easily transferred to RFEM / RSTAB.
- Further exchange formats
DXF, IFC, STP (eg. (from tower cranes, for example) for Intergraph, Advance Steel, SEMA, Cadwork, HSB-Cad, etc.), DSTV (e.g. (from tower cranes, for example) for Bocad and Frilo), FEM (Glaser) and CFE (Strakon), XLS (Microsoft EXCEL), CSV, ISM.DGN, DGN (Bentley ISM), DAT, SMLX (Advance Steel), ASF (Nemetschek Allplan), ESF
- Bidirectional interface between RFEM / RSTAB and Revit Structure
Unfortunately, there are two different interfaces with the same file extension - the .stp interface of the German Steel Construction Association (Deutcher STahlbau-Verband, DSTV) on one hand, and the STEP interface (STandard for the Exchange of Product model data) on the other hand, which is defined in the ISO standard 10303.
While the DSTV interface refers to the system axes of members, that is to the structural model, the STEP interface refers to the model geometry in the form of boundary lines, surfaces and simple solids. In the latter case, the models can be imported either as RFEM objects (nodes, lines, surfaces, solids) or as background layers so that the nodes can be set manually. The STEP interface does not usually transfers any system lines, but only the outer contours of structural components so it is necessary to manually create system planes afterwards. You can do this in RFEM and RSTAB, for example, by using a CAD/BIM model.
If you get the error message shown in Figure 01, you have tried to import an .stp file based on STEP using the DSTV interface. As described above, both formats are not compatible with each other.
In this case, select the STEP format for the import, as shown in Figure 02. If a message shown in Figure 03 appears, it is because this interface requires the RF-LINK add-on module.
In order to obtain the weld stresses, it is important to know which type of surface stresses resulting in RFEM are relevant. The figure shows a simple example: the clip fixed in the z-direction is subjected to a distributed load of 100 kN/m at the upper end in the x-direction and to a distributed load of 10 kN/m in the y-direction.
To determine the correct stresses, you have to know the local coordinate system of the surface. It can be activated in the Display navigator under "Model → Surfaces → Surface Axis Systems x, y, z." All stresses with "+" in the index represent the stress on the upper side, that is, the side of the positive local z-axis. When displaying the surface moments, it is necessary to pay attention to the fundamental difference between the surface and member internal forces: while the member moment My "rotates" about the local member axis y, the surface moment my acts in the direction of the local surface axis y, that is, about the axis x of this surface.
For the given example, this means that my represents the bending moment of the clip in the direction of the global y-axis. Therefore, the resulting value must be 2 kNm/m. The average in the diagram shown in the figure confirms this with the value of 1.95 kNm/m (deviations can be reduced by a finer FE mesh). The average of the shear flow is 100 kN/m and thus corresponds to the applied load.
Therefore, the stress σy,+ reflects the compressive stress of the clip on the upper side of the surface; τxy,x corresponds to the shear stress in the interface on the same side.
The stresses should only be evaluated if the weld thickness is equal to the surface thickness. Otherwise, you should determine the stresses manually from the applied internal forces.
Unfortunately, we currently have no videos or webinars for these modules.
However, there are some examples and technical articles to help you get started:
- At the bottom of the links , you can find links to VBA examples in our Knowledge Base.
- On your computer, you can find some Excel files with examples in the SDK folder. This folder is located in the directory C: \ Users \ Public \ Documents \ Dlubal.
- Some example macros are listed in an archive folder. You can download them on the following page by using the "HELP-FILES AND EXAMPLE MACROS" box:
Did you find your question?
If not, contact us via our free e-mail, chat, or forum support, or send us your question via the online form.
Your support is by far the best
“Thank you very much for the useful information.
I would like to pay a compliment to your support team. I am always impressed how quickly and professionally the questions are answered. In the industry of structural analysis, I use several software including service contract, but your support is by far the best.”