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.
In the current state of RFEM 6, the user must manually define the shear and longitudinal reinforcement for members. This is considered the "Provided Reinforcement" within the Concrete Design add-on. The add-on calculation will then determine the "Required Reinforcement" needed from the analysis and further output the "Not Covered Reinforcement". The user must manually apply additional reinforcement if the "Required Reinforcement" is not met.
For surfaces RFEM 6 can design automatically the reinforcement.
Design of Surface Reinforcement
It is planned for the future to have an automatic design also of the member reinforcement rather than only the manual input option.
Yes, the deformation analysis taking into account the cracked state in the cross-section is included in the concrete design in RFEM 6.
For this, the effective stiffness is calculated for each element in the concrete design according to the existing cross-section state of cracked (state II) or uncracked (state I), and then used in a second FEM calculation for the deformation.
In RFEM 5, this corresponds to the solution in the "RF‑CONCRETE Deflect" add-on module. In RFEM 6, this method is included in the concrete design.
Further information about determining the crack state as part of the deformation analysis can be found in the technical article at the following link.
The Masonry Design add-on allows you to automatically determine the stiffness of your wall-slab hinge. The diagrams were determined as part of the research project DDmaS - "Digitizing the design of masonry structures" and are derived from the standard.
Define a line hinge on the connection line of both surfaces and activate the slab-wall connection.
You can now enter your parameters in the Slab-Wall Connection tab. Then, click the Regenerate [...] button.
The determined diagrams are displayed subsequently.
All members when using the Design Add-ons for serviceability checks are considered supported at the end nodes by default. If the member is instead a cantilever or includes an internal support for a combination of both a cantilever and supported at both ends member type, a new Design Support should be defined under the member details.
The Design Support option can be found under the member dialog box under Design Supports & Deflection tab. Supports can be added to any nodes detected along the member length such as the member start, member end, or internal nodes.
Under the New Design Support dialog box, you can set the type of support from the drop-down including general, concrete, or timber. The "general" will give the program guidance on the deflection member type and which limiting deflection ratio to reference from the Serviceability Configurations whether cantilever (e.g., L/180) or supported on both ends (e.g., L/360). The alternative types "concrete" and "timber" will also influence the deflection design, but have additional strength design options incorporated such as moment and shear internal force modification for concrete design and a stress perpendicular to grain check for timber design.
For additional detailed information on this new setting in RFEM 6 including a "timber" type design support, refer to the webinar listed below under Links at time 51:05.
The punching results can also be found in the Results navigator.The results are divided into the design checks "On Nodes" and the reinforcement "On Nodes".The punching loads as well as the distribution of the shear forces at the critical perimeter (smoothed and unsmoothed) are the intermediate results of the design checks and are arranged accordingly in this part of the navigator.
To display the interaction diagram, open the "Design Details" dialog box of Concrete Design.
On the left side of the dialog box, you can then select the "Interaction Diagram". Thus, an additional tab called "Interaction Diagram" appears. You can control the settings for the result display here.
Check to see if the material assigned to the members is compatible with the standard selected for the design in the "Concrete Design" add-on.
Furthermore, please check to see if all design properties (durability class, concrete cover, shear and longitudinal reinforcement, and so on) have been specified correctly in the "Edit Member" dialog box.
No, this is not possible in the current state of development of RFEM 6.
See also the FAQ for RFEM 5 and RF‑CONCRETE Surfaces by clicking the link below.The design concept is currently structured similarly and is based on the reinforcement on the top and bottom sides.
It can happen that all design checks are fulfilled for a particular member or set of members, but a "Not Covered Reinforcement" result is still output. See also Image 01 and Image 02.
The reason for this is that the distribution of the "Provided Reinforcement" on the upper and lower positions is generated from the rebar arrangement within the cross-section.
The rebars above the center of gravity are assigned to the "upper position" and the rebars below the center of gravity are assigned to the "lower position". This means that the distribution of the "Provided Reinforcement" does not consider the actual distribution of the zero line within the cross-section, and checks which rebar is actually in the tension zone.
However, the actual distribution of the zero line within the cross-section is checked during the design. Thus, the rebars that have been geometrically assigned to the "lower reinforcement" (the provided reinforcement distribution) can be mathematically assigned to the tension reinforcement. This can be seen in Image 03. The rebars marked in red have been assigned geometrically to the lower reinforcement. However, the stress distribution within the cross-section shows that they are also subjected to tension and apply to the design checks accordingly. In the design, all members (marked in red and green in Image 03) are applied. Therefore, all the design checks are fulfilled at this location, although the distribution of the "Not Covered Reinforcement" suggests otherwise.
Under the RFEM 6 Concrete Design add-on - Global Settings - Reinforcing Bar - Bar size definition, the default setting "Bar Size Designation" can be changed to "Nominal Diameter". This option will allow the user to set the bar size diameter directly rather than selecting a default bar size from the drop-down.