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003532
2021-06-16

Question

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.

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

It is important to define the imperfections in RSTAB and to use load combinations (CO) according to the second-order analysis, not result combinations (RC)!

Note on 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.