How do you read a section cut to understand vertical relationships in a building?

• A. A sectional drawing shows relationships between floors, heights of spaces, and construction details; reveals stairs, levels, and structural elements.
• B. A plan view showing layout from above.
• C. A 3D perspective of exterior.
• D. A schedule listing materials.

Answer: (A)

Reading a section cut focuses on understanding how spaces stack and relate in height. A sectional drawing is a vertical cross-section through the building, so it shows floor-to-floor heights, how levels line up, where stairs connect, and how structural elements like beams and columns sit across different levels. It can also reveal how walls, slabs, and the roof intersect, giving you a clear sense of vertical relationships that other views don’t capture as directly.

Plan views from above convey horizontal layout and footprint but not the vertical dimensions of each space. A 3D exterior perspective helps visualize form and facade but often hides precise heights and how interior levels connect. A schedule lists materials and components rather than showing how spaces stack.