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Why can I specify a "creeping permanent load" in RF-CONCRETE Columns and not in RF-CONCRETE Members?

Answer

The RF-CONCRETE Columns add-on module allows you to define a "creep-producing permanent load". You can find a corresponding tab in window "1.1 General Data".

Figure 01 - Window "1.1 General Data" with tab "Creep-producing permanent load"

The reason for the input is that RF-CONCRETE Columns can apply this "creep-producing permanent load" for the automatic determination of the effective creep coefficient according to EN 1992-1-1, 5.8.4.

In contrast, there is no explicit input option for this creep-producing permanent load in RF-CONCRETE Members. In RF-CONCRETE Members, the stability creep analysis of reinforced concrete columns by means of a nonlinear design does not automatically reduce the effective creep coefficient. You can find the background to the effective creep coefficient applied in RF-CONCRETE Members in the manual of RF-CONCRETE Members in Section 2.4.6.

The same applies to the RSTAB add-on modules CONCRETE Columns or CONCRETE.

Keywords

Buckling Creep Permanent Load Column Model column analysis Curvature

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