I have to model a curved rod and would like to know how to do it with RSTAB.
Curved bars are strictly not possible in RSTAB, as there are exclusively straight bars. You can, however, manage with a polygon. The "Tools -> Generate Model -> Arc ..." function also provides a useful tool for creating curved structures. Tip: In RFEM, curved bars can be modeled directly.
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The structural engineering software for design of frame, beam and truss structures, performing linear and nonlinear calculations of internal forces, deformations, and support reactions