Which drawing would you consult to locate the HVAC ductwork and major equipment?

• A. Fire protection plan
• B. Floor plans
• C. Mechanical plan
• D. Framing drawings

Answer: (C)

You locate HVAC ductwork and major equipment on the mechanical plan because that drawing is dedicated to the building’s mechanical systems, including ducts, air-handling units, diffusers, boilers, chillers, pumps, and the locations of mechanical rooms. It shows how the system is routed, the sizes of ducts and equipment, and the required clearances and connections, so you can precisely identify where everything sits and how it’s installed.

Fire protection plans focus on sprinklers, standpipes, detection, and alarms; they don’t provide the routing and detailed placement of HVAC ductwork or major equipment. Floor plans show the general layout of spaces, walls, doors, and fixtures, but they don’t carry the necessary detail about duct routes or equipment locations. Framing drawings depict structural members and assemblies, not mechanical systems. Since locating ductwork and major HVAC equipment requires the diagram that specifically documents those systems, the mechanical plan is the go-to resource.