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Frequently Asked Questions (FAQ)
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AnswerThere are two ways to enter the cross-sections to the RFEM/RSTAB that are not included in the cross-section library.
1. Cross-Section Programs SHAPE‑THIN and SHAPE‑MASSIVE
The user-defined cross-sections can be created by means of the cross-section programs SHAPE‑THIN or SHAPE‑MASSIVE. The SHAPE‑THIN or SHAPE‑MASSIVE cross-sections can be imported using the cross-section library. To do this, click the "Import Cross-Section from Program SHAPE-THIN" or "Import Cross-Section from Program SHAPE MASSIVE" in the "New Cross-Section" dialog box (Figure 01). In this dialog box, it is possible to select and import any cross-section. Please note that the cross-sections must be calculated and saved in SHAPE‑THIN or SHAPE‑MASSIVE before importing the cross-section properties. It is only possible to import each cross-section individually.
2. Creating User-Defined Cross-Section in RFEM/RSTAB
If the cross-section properties of the manufacturer are known, they can be created in the cross-section library of RFEM/RSTAB using the option "Create New User-Defined Cross-Section" (Figure 02). In contrast to the cross-sections created with SHAPE‑THIN or SHAPE‑MASSIVE, it is not possible to design these user-defined cross-sections in the add-on modules, such as RF‑/STEEL EC3, because the data necessary for the design, such as c/t-parts, is missing.
To access the user-defined cross-sections, click the "Load Saved User-Defined Cross-Sections" button in the cross-section library (Figure 03).
The user-defined cross-sections from all models are saved in the EigProf.dat file. Even in the case of a version upgrade (for example, from X.19.XXXX to X.20.XXXX), these cross-sections will be imported. The storage location of the user-defined cross-section library can be determined using the program options (Figure 4). It is possible to copy a user-defined profile database already created on one workstation and paste it into the respective directory of the other workstation. The user-defined cross-sections are thus also available on the other workstation without having to import them again.
AnswerMaybe the user-defined cross-section library EigProf.dat on your computer is missing or it is corrupted. Please open the "Data Files" tab of the program options and select the "User-Defined Cross‑Section Library" category.
Open the displayed directory and check whether the EigProf.dat file is available. If the file is available, please rename it.
If the path including the file does not correspond to the default path for RFEM 5.20 "C:\ProgramData\Dlubal\RFEM 5.20\General Data\EigProf.dat," set this default path in Program Options.
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Wind Simulation & Wind Load Generation
With the stand-alone program RWIND Simulation, wind flows around simple or complex structures can be simulated by means of a digital wind tunnel.
The generated wind loads acting on these objects can be imported to RFEM or RSTAB.
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