The part of the drawing that shows the relationship of devices to each floor is called the

• A. Floor plan
• B. Riser
• C. Elevation
• D. Section

Answer: (B)

Riser diagrams show how devices connect from floor to floor, illustrating the vertical distribution of the system within the building. A floor plan charts what sits on a single level but doesn’t show how those devices relate to other floors. An elevation provides a vertical side view and heights, not the multi-floor device relationships. A section cuts through the building to reveal interior details, but it still doesn’t map the per-floor organization of devices. Because the goal is to show how devices are arranged across floors, the riser diagram is the correct representation.