A great number of structural people I talk to know little about phasing, and this leads me to believe not many structural people are taking advantage of the feature.
With RTC 2011 abstract submissions coming up I am seriously thinking about submitting a talk on Phasing for Revit Structure
But in the mean time here is a tip which should help a few structural people
Straight out of the box, Revit's phasing setup is not all that helpful and descriptive with a confusing amount of information presented at first in the phasing settings
One of the problems you will run into with phasing for structural elements is the representation of hidden lines for existing structure when displaying the existing elements with graphic overrides with phasing
To get around this the you need to change the Graphic override for existing projection lines circled in red in the image below
|Phasing settings dialog under mange panel|
By default the setting will override your linetypes for all existing lines to "Solid" meaning no hidden lines will show for structure under
You will need to change the linetype to" No Override"