The rotation icon pops up at the center by default, just drag it to wherever you want the rotation point.
wrote in message news:6384754@discussion.autodesk.com...
I really wish Revit-MEP would be able to rotate objects, like pipe lengths from the center of a riser, as opposed to the middle of
the pipe... or if it does, I wish that information could be bestowed upon me, as I have failed to identify HOW that would be
done...sigh...