What does a sectional view commonly illustrate in architectural plans?

A sectional view in architectural plans is primarily used to illustrate details of the interior spaces. This type of drawing is created by cutting through the structure to show the relationships between various elements and the arrangement of spaces within the building. It allows architects, builders, and clients to visualize how different areas interact, including ceiling heights, wall materials, and the positioning of doors and windows.

Sectional views are particularly valuable when it comes to understanding the spatial organization of rooms and how they connect vertically, such as how staircases relate to multiple levels of a building. This kind of information is crucial for ensuring functionality, safety, and aesthetic coherence in the design.

While other aspects of architecture, such as exterior facades, roofing structure, and overall aesthetics, are important, they do not capture the comprehensive detail about how spaces are utilized inside the building as effectively as a sectional view does.