Which plan provides the layout of rooms and interior features that helps place walls and ducts?

• A. Site plan
• B. Floor plan
• C. Electrical one-line diagram
• D. Mechanical schedule

Answer: (B)

A floor plan provides a top-down view of the interior, showing room shapes, walls, doors, and other features. This layout reveals how spaces relate to each other and where walls and openings exist, which is exactly what you need when deciding where to place walls and route ducts. A site plan focuses on the property exterior—property lines and site features—so it doesn’t guide interior wall placement. An electrical one-line diagram maps circuits and electrical components, not the room layout. A mechanical schedule lists equipment and specs, not the interior arrangement. So the floor plan is the plan that best provides the interior layout to plan walls and ducts.