I started out writing this blog post about the behaviour of subcategories in nested families. On closer investigation, the weird behaviour I intended documenting was not as I had thought – still a bit strange but not quite worthy of a post all to itself. So I have changed tack and turned it into a discussion about how to get a glazed door family to appear in both door and window schedules. Many experienced Revit users should already know this, but for those who do not, read on.
Schedules and Categories
Typically door and window schedules are created separately as single category schedules. Multi-category schedules have too many limitations to make them work efficiently for this task. A door or a window is usually either one of those categories, and therefore it can only appear in one of the schedules. What if you have a window assembly that contains a glazed door? or a sliding glass door, which you want to show in the window schedule (because it is glazing), but also in…