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KB 000587 | Optimizing Cross-Sections in RF-/TIMBER Pro
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First Steps with RFEM
Description
For a reasonable predimensioning of the cross‑sections in the module RF‑/TIMBER Pro, it is now possible to optimize the cross‑sections of the corresponding cross‑section table.
Keywords
Dlubal Knowledge Base Optimization Aspect ratio Buckling Dlubal KB Knowledge Base Technical Contribution
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Optimizing Cross-Sections in RF-/TIMBER Pro
For a reasonable predimensioning of the cross‑sections in the module RF‑/TIMBER Pro, it is now possible to optimize the cross‑sections of the corresponding cross‑section table.
![Structural system and cross -section dimensions according to [1]](/-/media/Images/website/img/000001-010000/009101-009200/009153.png?la=en&mlid=2EB9D46A596E46D7BC98C084D747D2BC&hash=4620909E3F21B7A63E22C3171A0B47CCB161096F)
The cross-section resistance design analyzes tension and compression along the grain, bending, bending and tension/compression as well as the strength in shear due to shear force.
The design of structural components at risk of buckling or lateral-torsional buckling is performed according to the Equivalent Member Method and considers the systematic axial compression, bending with and without compressive force as well as bending and tension. Deflection of inner spans and cantilevers is compared to the maximal allowable deflection.
Separate design cases allow for a flexible and stability analysis of members, sets of members, and loads.
Design-relevant parameters such as the stability analysis type, member slendernesses, and limit deflections can be freely adjusted.
- How can I perform a stability analysis for a tapered member?
- Can I design laminated veneer lumber with RFEM/RSTAB?
- Is it possible to import effective lengths from RF‑STABILITY or RSBUCK in RF‑/TIMBER Pro?
- How is it possible to consider edge lamellas of a glued-laminated beam?
- I would like to carry out the flexural buckling design for timber components with imperfections and internal forces according to the second-order analysis. Is it sufficient to activate this in Details of the RF‑/TIMBER Pro add-on module or is it necessary to make additional settings?
- Can I use RFEM to calculate a log house three-dimensionally?
- Why the results of members and set of members differ in the design?
- I can not calculate members with double rectangular cross-sections and linearly variable cross-section height in the HolzPro add-on module. What is the reason?
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Why can I not select sets of members for the serviceability limit state design in the respective design modules? I cannot specify sets of members under the "Serviceability Data" parameters. - In RF-/TIMBER AWC and RF-/TIMBER CSA, I receive the error that says torsion limit exceeded. How do I bypass this error message?
