With the clash check command, the program automatically checks whether there is a clash in the structure created with the sections selected by the user.
Location of Clash Check Command
You can access it from the ribbon menu, Analysis and Design tab , under the Steel Design heading.
When you click on the clash check command, if there are clashed elements, their names are written in the list together with the story they are located in. In addition, overlapping elements in the viewport are grouped by painting them in yellow or red.