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Columns with a dimension ratio greater than 6 should be modeled as walls.

In TBDY 2018 clause , curtains are vertical structural system elements whose long edge to thickness ratio is at least six.

Accordingly, if the size ratio of a vertical element is greater than 6, it can be a curtain.

You are faced with this message because the vertical element with a dimension ratio greater than 6 in your project is defined using the "Column command".


  • Delete the floor and the column named, whose dimension ratio is greater than 6, and redefine it with the "Pitch command".

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