Click the Steel Joist icon from the ribbon menu .
Steel purlin toolbar will open.
Select a profile from the list by clicking on the profile list in the steel purlin toolbar.
Choose the first of the steel beams or truss overhead heads that the steel joist will form between.
When you select your second steel beam or truss head, the Steel Joist Settings dialog will open.
In the dialog, there are parameters such as the height of the steel joist module, the number of joists, the layout, etc. After making the settings, click the OK button.
Steel joists will be formed.