Answer:
First, you should check the direction in which the self-weight of the structural elements acts. You can also display the self-weight graphically using "Display Navigator" (see Image 01). It often happens that a user does not convert the data when switching the global Z‑axis in the calculation parameters, and then only adjusts the geometry. The self-weight acts in the wrong direction, and it is necessary to assign it a correct sign in the load case (see Image 02).
Question
I obtain lifting support forces, even though the loads act in the opposite directions. How is this possible?
Do you have any questions?
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In RFEM 5 as well as RSTAB 8 in RF-/FOUNDATION Pro, you can save the foundation dimensions for all five foundation types as foundation templates in a user-defined database and use them later in other models.
In RF-/FOUNDATION Pro, the foundation design requires the definition of the corresponding loading (load cases, load combinations, or result combinations) for different design situations (STR, GEO, UPL, or EQU).
In RF‑/FOUNDATION Pro, reinforcement drawings are displayed after designing the foundation, where you can record all necessary structures of the reinforcement steel.
In RF‑/FOUNDATION Pro, the available reinforcing steel diameters can be adjusted by the user. The adjustment of the available rebar diameters works similarly to the same function in the RF‑/CONCRETE (Members) and RF‑/CONCRETE Columns add‑on modules.
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Do you have individual column sections and angled wall geometries, and need punching shear design for them?
No problem. In RFEM 6, you can perform punching shear design not only for rectangular and circular sections, but for any cross-section shape.
For a response spectrum analysis of building models, you can display the sensitivity coefficients for the horizontal directions by story.
These key figures allow you to interpret the sensitivity to stability effects.
The modal relevance factor (MRF) can help you to assess to which extent specific elements participate in a specific mode shape. The calculation is based on the relative elastic deformation energy of each individual member.
The MRF can be used to distinguish between local and global mode shapes. If multiple individual members show significant MRF (for example, > 20%), the instability of the entire structure or a substructure is very likely. On the other hand, if the sum of all MRFs for an eigenmode is around 100%, a local stability phenomenon (for example, buckling of a single bar) can be expected.
Furthermore, the MRF can be used to determine critical loads and equivalent buckling lengths of certain members (for example, for stability design). Mode shapes for which a specific member has small MRF values (for example, < 20%) can be neglected in this context.
The MRF is displayed by mode shape in the result table under Stability Analysis → Results by Members → Effective Lengths and Critical Loads.
You can use the "Plate Cut" component to cut plates (for example, gusset plates, fin plates, and so on). There are various cutting methods available:
- Plane: The cut is performed on the closest surface to the reference plate.
- Surface: Only the intersecting parts of plates are cut.
- Bounding Box: The outermost dimension consisting of width and height is cut out of the plate as a rectangle.
- Convex Envelope: The outer hull of the cross-section is used for the plate cut. If there are fillets at the corner nodes of the cross-section, the cut is adapted to them.
I am trying to import a DXF file. The file can be imported into the model, but it does not have the correct scale. Where is the problem?
My model is unstable. What could be the reason?
How can I permanently save the parameters in the "Units and Decimal Places" dialog box?
I would like to enter a large spring constant. Is this possible?
Does the program check the lap length of the vertical stirrups of a block foundation with smooth bucket sides?
When creating a new member, the existing member is divided into two members, or when adding a node on a member, a new perpendicular member is created.
Is there any option to prevent the members from being divided automatically?
Is there any option to prevent the members from being divided automatically?
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