The verification/ unity check of user defined cross-sections (using the tool Section Utility) is only supported for steel cross-sections according to Eurocode.

Problem

There are no strength/ stability results available for a custom cross-section (Section utility) after a steelcheck.

Solution

In order to perform a steelcheck, elastic and plastic section properties are not sufficient. Eurocode requires additional parameters. Eurocode gives rules to determine those additional parameters in case of I, T, H, O, L and tubular cross-sections. But for a combination of these cross-sections or for a random cross-section there are not rules given. Eurocode will have to be interpreted in order to determine a meaningful value for these additional parameters. And that is a job for the end user. The additional parameters can be defined in Section Utility:

1. Open the cross section Section Utility
2. Click on the button “Imposed classes” at the right bottom side
3. Enter the requested parameters. An overview can be found in the download links below.

Some time ago, we hosted a webinar about composed Section-Utility cross-sections and the steel verficiation. You can review all webinars here.