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Question
How can I perform a stability/buckling analysis on a plate structure?
Question
The design ratio of the cross-section check is different for the RF‑/STEEL and RF‑/STEEL EC3 add-on modules. What is the reason?
Question
What is the meaning of the "Activate Weld Design" option in the detailed settings of RF‑/STEEL EC3?
Elastic critical moment for lateral-torsional buckling
What are the options in RFEM 5 or RSTAB 8 for determining the ideal elastic critical moment for lateral-torsional buckling for any cross-sections and systems/loads? Is it also possible to design flat steel (brackets, flat steel stringers of staircases)?
Question
Does the fatigue design in CRANEWAY also consider welded stiffeners?
Welds in RFEM 6
In the case of stairs with a complicated geometry, it is often difficult to design welds by using the analytical methods. How can I do this with RFEM?
Question
When designing a beam, I would like to neglect the torsion included in the stability analyses using the filters described in Knowledge Base article #001498.I define the filter, but the torsion warning appears at the same x‑location again. Do the design internal forces change, or why is that?
Question
I am comparing the flexural buckling design according to the equivalent member method and the internal forces according to the linear static analysis with the stress calculation according to the second-order analysis, including imperfections. The differences are very large. What could be the reason for this?
Question
For the cross-section design of a flat steel, I obtain abnormally high shear stresses due to the torsion in the STEEL EC3 add-on module, which can be disproved by a simple manual calculation. What is the error?
Question
What is the purpose of a fillet weld in SHAPE‑THIN?
Question
I used double members for the member input. Do I have to consider anything else, or is it better to enter a member with double cross-section properties?
Question
I would like to design a cross-section in RF‑/STEEL Cold‑Formed Sections that is not contained in the cross-section library of RFEM/RSTAB. What should I do?
Overstrength Factors
How do I include the overstrength factor(s) Ωo in the ASCE 7 load combinations?
Question
What does the load application point in RF‑/STEEL EC3 Warping Torsion refer to?
Redundancy Factors
How do I include the redundancy factor(s) ρ in the ASCE 7 load combinations?
Steel Bracket
I have to dimension a wall bracket as a steel brackets that I have modeled as surface components in RFEM 5. Which add-on module can I use to design it?
Question
I am performing a stability analysis according to the second-order analysis. Why is the partial safety factor γM1 used for the stress analysis here?
Question
How do I superimpose generated equivalent loads from the seismic analysis?
Question
I would like to design banisters, so I have created a set of members for this. The cross-section is a hollow section. Can the stability analysis be carried out on the entire structure, or do I have to convert it into an equivalent member design with the specification of all supports in STEEL EC3?
Question
When calculating a cross-section, I get a message saying that the weld is not connected to two elements. What should I do?
Question
Where can I find the determined support forces for the crane runway girder? At the bottom flange of the crane runway girder or in the shear center of the cross-section?
Question
I designed a steel connection using RF‑JOINTS, then created a model to compare it in RFEM. Why are the results not identical?
Question
In the RF‑/STEEL EC3 add-on module, I obtain an extremely high design ratio for a member in the case of "Biaxial bending, shear and axial force". Although the axial force is relatively high, the design ratio seems unrealistic. Why?
Question
Is it possible to reduce dynamic coefficients when using DIN EN 1993‑6?
Difference Between SHAPE-THIN 9 and SHAPE-THIN 8
What is the difference between SHAPE‑THIN 9 and SHAPE‑THIN 8?
Question
Why do I obtain much higher design ratios in RF‑/STEEL than for cross-section design in RF‑/STEEL EC3?
Question
Which result combinations can I design with the RF‑/JOINTS Pro program, and what should I pay attention to?
Question
How do I activate or run RF‑/STEEL Cold-Formed Sections?
- 004727
- RFEM 5
- RSTAB 8
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- Concrete Structures
- Steel Structures
- Timber Structures
- Tensile Membrane Structures
- Structural Analysis & Design
- Finite Element Analysis
- Wind Simulation & Wind Load Generation
- Stability Analysis
- Dynamic and Seismic Analysis
- Form-Finding and Cutting Patterns
- Cold-Formed Sections
- Eurocode 1
- Eurocode 3
- Eurocode 5