We provide hints and tips to help you get started with the basic program RFEM.
KB 001680 | Why 3D Models in Structural Design?
Video
First Steps with RFEM
Description
Structures are naturally three-dimensional. However, because in the past, it was not possible to easily perform calculations on three-dimensional models, the structures were simplified and broken down into planar subsystems. With the increasing performance of computers and related software, it is often possible to do without these simplifications.
Digital trends, such as Building Information Modeling (BIM) or new options for creating realistic visualized models, reinforce this trend. But do 3D models really have an advantage or are we just following a trend? The following presents some arguments for working in 3D models.
Keywords
Dlubal Knowledge Base 3D Model 2D model BIM Building Information Modeling Analysis model Structural model Dlubal KB Knowledge Base Technical Contribution
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Why 3D Models in Structural Design?
Digital trends, such as Building Information Modeling (BIM) or new options for creating realistic visualized models, are based on 3D models. But do 3D models really have an advantage or are we just following a trend? The following presents some arguments for working in 3D models.
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Depending on stiffness, mass, and damping, structures react differently to wind action.
- In RF‑CONCRETE Surfaces, I obtain a high amount of reinforcement in relation to a lever arm that is almost zero. How is such a small lever arm of internal forces created?
- 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?
- How can I display membrane stresses in the results of RF‑STEEL Surfaces?
- How does the "Orthotropic Plastic" material model work in RFEM?
- When converting from the manual definition of reinforcement areas to the automatic arrangement of reinforcement according to Window 1.4, the result of the deformation calculation differs, although the basic reinforcement has not been modified. What is the reason for this change?
- 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?
- Is it possible to import the files of the FEM-Design program by the company StruSoft into RFEM?
- I would like to define a line support with ineffective tension and apply the tension force on this line by using a nodal support instead. Why does the line support still receive a tension force?
- A single-span beam consisting of several apparently straight members receives small torsional moments in the load case of "dead load." Why?
- Does the program check the lap length of the vertical stirrups of a block foundation with smooth bucket sides?
