3D Creation of Celing, Roof, Architectural plan, Structural plan, Sectional view, Elevation view and Camera specific view for a house plan using REVIT

1) To create ceiling at first floor, copy all the walls, components to first floor level , go to architecture tab select ceiling option and sketch the path around which ceiling is to be created.

2) While creating roofs make sure to make them to the top of the building, i.e. above the topmost floor then change the required slope from the properties panel.