I recently purchased RSTAB with the CONCRETE add-on module. Can I use it to perform the stability analysis of reinforced concrete columns?

Answer

Yes, you can, because the nonlinear reinforced concrete design is also included in the CONCRETE add-on module for RSTAB 8. Thus, you can activate "Nonlinear calculation" in the "Ultimate Limit State" tab.

Figure 01 - Dialog Box "General Data" in CONCRETE

In the detail settings for the nonlinear calculation, you can select "General design method for members in axial compression acc. to second order theory."

Figure 02 - Dialog box "Settings for Nonlinear Calculation": General Method for Compression Elements

In this case, it is important to define the imperfections in RSTAB and apply load combinations (CO) according to the second-order analysis, no result combinations (RC), for the design!

Note to RFEM 5:

In RFEM 5, the same procedure is possible in RF‑CONCRETE Members. However, RFEM requires the RF‑CONCRETE NL add-on module for the nonlinear reinforced concrete design.

Keywords

Stability Reinforced concrete Column Concrete Model column method Compression members General method Compression element

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