Commando : S3d_FullClash
You can use this command to check for clashes between elements.
If a plate clashes with a beam, both will be coloured yellow. This will immediately show errors in the design or drawing.
Bolts are coloured yellow when they are too close to a plate or beam. Bolts will be coloured red if they are drawn in the air or if they are too close to the edge of a beam or plate that they are piercing. The maximum distance between a bolt and the edge of a beam or plate can be set in the Global settings dialog box.