I felt compelled to share a portion of a post in a recent thread (link below) from the Revit Forums at AUGI. Aaron Rumple, an Architect in St. Louis, Missouri and long time Revit user/supporter, provided the following insight about view range and how floors are treated or affected. See if you find it as interesting as I think you might? Keep in mind, this is part of one of several posts replying to a series of questions...
Aaron wrote: It (a floor) shows in the Level 1 view because of a little known rule. Some objects show up when slightly below a level. This is the case of your floor. Floors will show up when they are below a bottom range from 0 to -4'.
At -4' and below they then vanish. Yes, this is poorly documented and confusing. The original intent was to automate as much of the view setup as possible so that you wouldn't have to configure a ton of visibility settings. This works fine as long as a floor is a floor and not a footing.
Typically, we would want floors of levels that step slightly to all show up in the same view as in the case of a sunken living space set down just a couple of steps. So Revit in its effort to speed the process can make things confusing when we use object in "non-standard" ways.
I think this is a perfect example of why the Revit Community at AUGI is so great. Great questions and great contributions by the membership. Thanks to Aaron for the info!
Here's a link to the recent thread. Keep in mind you should be logged into AUGI already to get to the post the quickest, otherwise, most likely you'll need to log in after clicking the link.