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Question
How many mode shapes do I need to consider in the dynamic analysis?
Question
How do I determine the stiffness center of my structural system?
Seismic Analysis
What is the approach for seismic design in RFEM or RSTAB 8?
Question
I have manually generated earthquake loads. How can I combine them according to the superposition rules of the standard?
Geo-zone tool
I noticed deviations from the map of DIN EN 1998‑1 or DIN 4149 in the online service "Geo-Zone Tool: Snow Load, Wind Speed, and Seismic Load Maps". Can you tell me which map is current and thus governing?
Creating Response Spectrum ASCE 7-22
How can I create a response spectrum according to ASCE 7‑22?
Consideration of Heat Affected Zone for Aluminum
Is it possible to consider the reduction of strength in the heat affected zone (HAZ) in the RF‑/ALUMINUM add-on module?
National Annex DIN EN 1998-1/NA:2021-07
Is the German National Annex 2021‑07 to Eurocode 8 available in RFEM 5 / RSTAB 8?
Question
How can I display nodal masses?
Question
For the settlement calculation in the RF‑SOILIN add-on module, the specific weight gamma and gamma,sat are required for the soil. What do I need the value gamma,sat for, and how is it assumed in the calculation?
Question
It is not possible to design a SHAPE‑THIN cross-section due to invalid symmetry. What is the cause and how can I fix it?
Question
Which formula is used in the RF‑/TOWER Loading add-on module to calculate the first natural frequency for the determination of the structure coefficient?
Question
I am trying to design an open, unsymmetric aluminum cross-section in RF‑/ALUMINUM and I am get the warning "Non-designable - 1022) General cross-section — Check of stability is not available". What is the reason?
Mode Shapes - Limiting Selection of Shapes
I need many mode shapes to achieve a sum of 90% effective modal mass. Can I limit the number of mode shapes for generating equivalent loads?
Question
I need to define different types of lateral intermediate restrains for a single element in RF-/STEEL EC3. Is this possible?
Question
What happens if I activate the "Soil failure" function in RF‑SOILIN?
Question
I get an implausible result with the expression "1.#J" in the RF‑/ALUMINUM add-on module.
How can I fix this?
Question
In the RF‑/DYNAM Pro - Equivalent Loads add-on module, it is possible to consider accidental torsional actions. Which calculation approach is behind the calculation? Which values have to be entered for the eccentricities eX and eY?
Question
How do I superimpose generated equivalent loads from the seismic analysis?
Question
Is it possible also to create a user-defined response spectrum in RF‑/DYNAM Pro?
Question
RF‑/DYNAM Pro – Forced Vibrations and RF‑/DYNAM Pro – Equivalent Loads perform the multi-modal response spectrum analysis. What are the differences?
Question
I would like to perform seismic design of an irregular structure. Does RFEM automatically carry out the modal analysis (consideration of multiple vibration modes) on the spatial system, or do I have to use special settings for this?
Question
Why can I only calculate seismic loads in one direction when using RF‑/DYNAM Pro?
Question
How do you distinguish between the response spectrum with equivalent loads method and the response spectrum without equivalent loads method in RFEM and RSTAB?
Question
I have used the RF‑/DYNAM Pro add-on module to generate the governing result combinations of seismic loads. What is the next procedure to perform the design of the individual structural components?
Question
What method is applied in the RF‑/DYNAM Pro - Equivalent Loads add-on module?
- 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