518x
002163
2017-12-01

Question

What is the meaning of the calculation message "No unambiguous rotation of moment about compression point"?


Answer:

In several individual design checks (for example, column flange under bending), the applied bending moments are related to a compression point. The eccentricity of the axial force is converted into an additional moment. If the compression forces predominate, the direction of the moment can be reversed and the connection is then completely subjected to the compression (see the image). This means that there is no longer a clear compression point.