FAQ 002857 EN-US
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If a member is laterally supported to prevent buckling due to a compressive axial force, it must be ensured that the lateral support is actually able to prevent buckling.
Depending on stiffness, mass, and damping, structures react differently to wind action.
- What is the critical load factor and how is it possible to determine it?
- Is it possible to import effective lengths from RF‑STABILITY or RSBUCK in RF‑/TIMBER Pro?
- I design a set of members by using the equivalent member method in RF‑/STEEL EC3, but the calculation fails. The system is unstable, delivering the message "Non-designable - ER055) Zero value of the critical moment on the segment."What could be the reason?
- What is the meaning of the warning message ER061) Minimum amplifier of design loads <1?
- In RF‑/STEEL EC3, I get an error message saying that the node with a support does not exist in the set of members. What is the reason?
- What is the difference between SHAPE‑THIN 9 and SHAPE‑THIN 8?
- In the RF‑/STEEL EC3 add-on module, I have selected two bracings with the same size as the shear panel type in the "Parameters" window for a beam to be designed. Thus, the beam should be supported laterally in the middle. Why is the eigenvector arbitrary anyhow?
- 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?
- Why are the equivalent member designs grayed out in the Stability tab when activating the plastic designs by using the partial internal force method (RF‑/STEEL Plasticity)?
- 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?
The structural engineering software for design of frame, beam and truss structures, performing linear and nonlinear calculations of internal forces, deformations, and support reactions
Stability analysis according to the eigenvalue method