I modeled a structure and analysed it. When I imported the file in RCDC for column design, properties of columns at some level is missing. Can any of you can help me please?

If I am not wrong you are finding it balnk for most of the columns at these 2 levels.

If yes, the reason is RCDC detects levels depending on Y coordinates of the nodes. Now for this model, only few columns have nodes in the marked levels and most of the columns do not. So. program will only show columns which have nodes in that level and will not show other columns. This will not affect your output or design. But there is an option called level merging which will solve this issue. But, that has some effect in design. Please read the attached file to understand level merging and take decision if you want to use that in your model.

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