Open Web Joist - Can't Make Joist

[ctc]

Does anyone know why Revit will not allow me to use their structural open Web Joist in a beam system?

It seems that it will allow me to use any other type of structural beam including a plywood Web Joist, but even after being loaded into a project the Open Web Joist is not available in the drop-down menu of the beam systems element properties.

[Dimitri Harvalias]

Which joist family are you using? I didn't have a problem with it.

[ctc]

Which joist family are you using? I didn't have a problem with it.
Open Web Joist

[Dimitri Harvalias]

Sorry CTC, I don't see a family named Open Web Joist in the Revit library, that's why I was asking. Can you post the joist family? The only thing I can think of is that it may not be a structural component.