Model Horizontal Shaft - Best Method - Revit Architecture

[Limbatus]

What is the best method for modeling fire rated horizontal shafts. I have my desired 2hr wall type, but I would like the these vertical elements to wrap finishes with horizontal Fire protection. should i use a Roof, Floor, some other kind of element?

[gbrowne]

Roof or floor. Change to the appropriate materials etc. Model it as you'd build it! ;-)