Reflected ceiling plans for building plans usually indicate a layout for multi-storied buildings. Hence, they usually include stairs, elevators, etc. In some building plans, there may not be a mention of these constructions. Regardless, you will find symbols for an entrance. And for the connection of one room with another, there are symbols of doors. A reflected ceiling plan essentially represents the items as seen from above the ceiling. Some of such items include luminaire ceiling mount, enclosed ceiling luminaire, ceiling fan, grille diffuser, multi-light bar, modal fluorescent, surface fluorescent light, etc. Outlets are named according to their shapes- rectangular outlets, circular outlets, linear outlets, etc. Which elements will be included in the ceiling plan depends on the type of building it is.