Where in RF‑CONCRETE Members can I display the location of the neutral axis or the neutral axis depth of concrete for a cross-section?


After the calculation, you can switch to the result window "2.4 Required Reinforcement by x‑Location" in the RF‑CONCRETE Members (RFEM) or CONCRETE (RSTAB) add-on module.

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 in Window 2.4. This covers the "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 .

Figure 01 - Depth of Neutral Axis in Window "2.4 Required Reinforcement by x-Location"

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."

Figure 02 - Distribution of Intermediate Value "x" in Dialog Box "Result Diagram on Member"


Neutral axis Compression zone Neutral axis depth Stress distribution Shear force


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RFEM Main Program
RFEM 5.xx

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Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids and contact elements

Price of First License
3,540.00 USD
RSTAB Main Program
RSTAB 8.xx

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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

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Linear and nonlinear analysis of reinforced concrete members with reinforcement concept

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Price of First License
810.00 USD