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  • Answer

    The additional options within the Detail settings of the functions "Move," "Rotate," or "Mirror" are suitable for this, see Figure 1.

    Figure 01 - Create Rotated Surface

    Provided that it is necessary to draw an annular surface, whereby the center point,  and inside and outside radius are known, proceed as follows:

    • insert a node on the inner radius and the outer radius
    • connect the two nodes by means of a line
    • select these three objects
    • open the "Rotate" function
    • activate "Lines Between Nodes", as well as "Surfaces Between Lines"
    • pay attention to the type of connecting lines created when rotating
    Enclosed you will find a short video available for download.

  • Answer

    In RFEM and RSTAB, it is not possible to use the symmetry of the structure to calculate only a half of the structure.

    However, it is possible to create only a half of the structure including the loads and then to generate the other half by using the menu tool "Edit → Select → All" and then "Edit → Mirror." In the Mirror dialog box, it is necessary to select the "Create copy" option and the "Copy including loading" option under [Details] (see Figure 01).

    In this way, you can omit the supports in the mirror axis and obtain more realistic results.

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