A Reflected Ceiling Plan is an architectural design in which the plan of a ceiling is projected on a flat plane directly below, showing the orientation of various electrical or mechanical devices within the ceiling. Here is an example. This plan displays the layout of the a residential house and marks the installation of lights, switches, plugs, and fans. It provides a clear and detailed overview of the ceiling's layout, making it easier to coordinate with other trades and ensure that all necessary elements are included in the final design.