First of all please feel free to respond in German or English. Whichever you prefer.
I am trying to model a composite column in the cross section editor but am having trouble doing so. The cross section should look as illustrated in the image. It will be a steel rectangular tube filled with concrete. The 4 circle represent tendons which will pre-stress the column. Could you please advise how this cross section should be created? I am having trouble with if it should be a new solid section out of steel, then an opening, then filled with concrete, or in what order it should be created.
Thank you for your help,