Answer:
After the calculation, you can switch to result window "2.4 Required Reinforcement by x‑Location" in the add-on module RF‑CONCRETE Members (for RFEM 5) or CONCRETE (for RSTAB 8).
Here, you can select a certain result row for a particular design and x-location (upper table in Window 2.4). Then, you can evaluate the intermediate results in the lower table of this window. This covers "Neutral Axis Depth x", for example. The location of the neutral axis for the selected design location is displayed in the graphic on the right of Window 2.4.
Furthermore, you can display the distribution of the neutral axis depth along the member length graphically in the model or in "Result Diagrams on Member".
