You continue to design, model, and build. Now... It is time to do some renderings. You set up a camera in the kitchen where there are about 12 recessed downlights you have added into your model. Then you click render. Dark!?! Not a single glimmer of artifical light in the scene?
So, what is the correct way to construct a floor in Revit? A solid floor with joists, a void with beam systems, or place the joists as part of the ceilings? Realistically, I would say using a beam system for the fact of realism, 3D sections, and analysis.