The structural analysis software RFEM 6 is the basis of a modular software system. The main program RFEM 6 is used to define structures, materials, and loads of planar and spatial structural systems consisting of plates, walls, shells, and members. The program also allows you to create combined structures as well as to model solid and contact elements.
RSTAB 9 is a powerful analysis and design software for 3D beam, frame, or truss structure calculations, reflecting the current state of the art and helping structural engineers meet requirements in modern civil engineering.
Do you often spend too long calculating cross-sections? Dlubal Software and the RSECTION stand-alone program facilitate your work by determining section properties of various cross-sections and performing a subsequent stress analysis.
Do you always know where the wind is blowing from? From the direction of innovation, of course! With RWIND 2, you have a program at your side that uses a digital wind tunnel for the numerical simulation of wind flows. The program simulates these flows around any building geometry and determines the wind loads on the surfaces.
Are you looking for an overview of snow load zones, wind zones, and seismic zones? Then you are in the right place. Use the Geo-Zone Tool to determine quickly and efficiently snow loads, wind speeds, and seismic data according to ASCE 7‑16 and other international standards.
Would you like to try out the capabilities of the Dlubal Software programs? You have the opportunity to do so! The free 90-day full version allows you to thoroughly test all our programs.
If this error message appears, RFEM/RSTAB cannot connect to the server managing the cloud calculations.
Please ask your IT department to check the communication with our server. It is necessary to enable the following access in the firewall policies as well as in the network:
If the connection still does not work after this procedure, your IT department needs to check whether the SSL certificate has been exchanged, based on your internal guidelines (for example, using a proxy). They should be able to check this with software (for example, OpenSSL) in the command line:
There may be a scenario where a user does not have a continuous internet connection to run the cloud-based online licenses of RFEM 6, RSTAB 9, or RSECTION.
In order to initially launch these programs, a user must have an initial connection to the internet. The license will then be active over the default 24 hrs where no internet connection is required. After 24 hrs, the internet connection is needed again to renew for an additional 24 hrs.
However, there is now the option to check out a license for up to 30 days where a continuous internet connection is not required over this time period to successfully run the programs. To select a longer time period beyond the default 24 hrs, a user can simply select the borrow date directly in the License Manager.
After the selected time period has expired, an active internet connection is required to renew the license for an additional period.
After the release of the new generation of Dlubal programs, including RFEM 6 and RSTAB 9, the Dlubal extranet layout was modified. The ability to download your authorization file (author.ini) is still possible. The file is now in a different location.
After successfully logging in to the extranet, you can follow this workflow selection:Licenses → Authorization Files for Download | RFEM 5, RSTAB 8,... → Authorization Files for Download...
The new generation of programs (RFEM 6, RSTAB 9, RSECTION) are entirely cloud-based, so they use online login for the authorization and no longer require the authorization file.
We are pleased that RFEM 6 licensing configuration is entirely cloud based. You only need your login credentials to access the program from any computer at any location. Therefore, we will no longer offer a standalone vs. a network license which required the license manager to be installed on either a client computer or server as this was the case with RFEM 5.
Additionally, the upgrade cost for an existing RFEM 5 network vs. standalone license will be the same for both.
Because we will no longer offer a network vs. standalone option in RFEM 6 as this generation is entirely cloud-based licensing, the add-ons can no longer be shared between the main RFEM 6 program.
As an example, you can purchase one RFEM 6 license with the timber design add-on (design of timber members according to NDS, CSA, EC5, and so on) and choose to purchase a second RFEM 6 license with the steel design add-on (design of steel members according to AISC, CSA S16, EC3, and so on). Multiple RFEM 6 licenses do not necessarily need to have the same add-ons. However, in this scenario, the user will not have the ability to design both timber and steel structures in the same model without access to both add-ons under the same license. If you have not purchased any of the specific add-ons (for example, steel design, timber design, and so on) for the current license, it's still possible to calculate a full analysis for this material type but design according to the standards will not be carried out.
Users under the same account can easily switch to a different license within the company that includes the relevant design add-ons if no one else is currently utilizing the license.
RFEM 6 was completely rewritten using the modern Qt framework in the C++ programming language. Graphics and the overall GUI is greatly improved including a quicker and more reliable printout report. Cloud-based licensing is also used allowing multiple users within the same company to share licenses on different computers.
Perhaps the biggest change between program generations is the add-on modules are now integrated directly in the main program renamed as “add-ons”. This means that information such as unbraced lengths, reinforcement layout, etc. will be defined directly in RFEM 6. Design ratios will then be provided within the main program rather than what used to be a separate add-on module dialog box.
Complete design equations are now provided for each standard and material so users have a clear and traceable understanding of the results.
Although some new program concepts will require a different workflow for those used to RFEM 5, we’re confident these changes will lead to more efficient and complete model designs. Check out a more complete list of new features with the link listed below.
In RFEM 5 / RSTAB 8, open the "Help → Authorization" menu and select the Load Authorization File option (see the image).
After restarting the program, the new authorization file will be used.
No authorization file is required for the new program generation RFEM 6 / RSTAB 9. In this case, the authorization is based on cloud and done by logging in when the program starts.