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This article describes and explains the influence of bending stiffness of cables on their internal forces. Furthermore, the text provides information on how this influence can be reduced.

To evaluate whether it is also necessary to consider the second-order analysis in a dynamic calculation, the sensitivity coefficient of interstory drift θ is provided in EN 1998‑1, Sections 2.2.2 and 4.4.2.2. It can be calculated and analyzed using RFEM 6 and RSTAB 9.

For the ultimate limit state design, EN 1998‑1, Sections 2.2.2 and 4.4.2.2 require a calculation considering the second‑order theory (P‑Δ effect). This effect may be neglected only if the interstory drift sensitivity coefficient θ is less than 0.1.

The design results of the add-ons can be optionally displayed in the tables by design situations. This allows you to evaluate the results in great detail.

In the combination wizard, you can create final result combinations using auxiliary combinations. In the case of models with many load cases (for example, moving loads for bridges), you can use this option to generate result combinations that are more transparent and thus easier to check.

In RFEM and RSTAB, you have the option to export several printout reports into a PDF file.
You can find this function in the Navigator – Data.