Yes, I have seen the routing in a building tutorial and it proved very helpful when I was beginning 3D routing. My question so much isn't how to do it-I have been successful in accomplishing that. I have built 3D networks and created models in order to run route analysis in ArcScene, for Geoprocessing services, and 2D networks that are used in web applications (I don't do the web-based/ArcServer end, just the desktop end). My question is how the application on the web split up the route return based on floor. We want to take a whole route, point A to point B, but have a floor attribute split up the returned route. This is aimed for a web based product where a 3D visualization is not an option, but we want to have control over segments of the route based on floor while maintain the route as a whole.