I have been trying to get line weight standards in Revit 2013 set up for the office I work at. I have noticed that when I set the cut line weight for girders, joists and purlin's individually, they don't differentiate line weight based on changes made to the sub-category. I have gone to PROPERTIES>STRUCTURAL>STRUCTURAL USAGE, and they are set to the different grades. I feel like I am missing something here. Ay help would be appreciated!