How is the automatic creation of c/t-parts carried out?


In the "c/t-Parts and Effective Cross-Section" tab of the "Calculation Parameters" dialog box, you can define the settings for the automatic creation of c/t-parts.
It is also possible to specify an angle from which a support should be created between two elements. In case that the angle for connection of elements is smaller, they are considered as an interconnected c/t-part. Stiffeners (longitudinal ribs, slopes (lips), or bulges, and so on) are not recognized by the program during the automatic generation of the c/t-parts. The c/t-parts have to be adjusted manually. You can make the changes in Table "1.7 Notional Flat Widths | EN 1993‑1‑3" or in the "Edit Notional Flat Width" dialog box.
The check box for Element is "significant" controls whether a curved element is considered as a c/t-part. If the length of the arc is larger than the diameter entered here, it cannot be neglected.
A corresponding error message appears before the calculation.
The option Element ist "straight" refers to curved elements. The arcs are usually excluded from the determination of the effective widths because the standards do not provide clear specifications. A curved element is assumed to be straight if the ratio of the connecting line (start/end node) to the element length is higher than the specified value.


c/t-part b/t-part

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