A reflected ceiling plan is drawn as though you are looking down at the floor and seeing the ceiling reflected back at you, like a mirror on the ground. That convention keeps the RCP oriented the same way as the floor plan directly below it, so anyone overlaying the two sheets can instantly check coordination.

Sounds simple. But the RCP is one of the most coordination-intensive drawings in any set. It has to show the ceiling material and grid layout, every recessed and surface-mounted light fixture, HVAC supply diffusers and return air grilles, fire sprinkler heads, access panels, speakers, smoke detectors, exit signs, and any soffits or bulkheads that change ceiling height. That list alone involves the architect plus the mechanical, electrical, plumbing, fire protection, and sometimes acoustical and AV consultants.

For the PDD exam, you need to analyze how these elements interact and make evaluative decisions about documentation. When a duct run forces a bulkhead, where do you relocate the displaced light fixtures? If the sprinkler contractor wants pendant heads on a 13-by-13-foot maximum spacing but your ceiling grid is 2-by-4, how do you resolve that conflict in the drawings? These are the kinds of judgment calls the RCP demands.

Getting this right matters for constructability, code compliance, and the building's finished appearance. Getting it wrong produces RFIs, change orders, and ceilings that look like afterthoughts.