1st Fl - Area C.jpg

This is a Mechanical First Floor Plan - Area C Ductwork drawing, specifically a technical architectural/engineering schematic showing detailed ductwork layout for a building's first floor. The plan includes a grid-based layout with alphanumeric coordinates (A-H, 7-11), and contains multiple rooms and complex ductwork routing with specific dimensions and duct sizes. Numerous technical annotations and notes are present in the top right corner, including guidance about supply return ducts, security walls, and referencing additional detail sheets. The drawing uses a scale of 1/8" = 1'-0" and includes a key plan showing multiple building areas (A, B, C, D) in a small inset diagram. The document appears to be part of a larger set of mechanical engineering plans for a commercial or institutional building project.