Which type of drawing is primarily used for showing the outer structure of a building?

Elevations are used to showcase the outer structure of a building by providing a two-dimensional representation of what the building will look like from the front, sides, and rear. They illustrate the height, design elements, proportions, and materials used on the exterior, which are crucial for understanding how a building will integrate with its surroundings and comply with aesthetic standards.

This type of drawing helps architects, builders, and clients visualize the façade and any design features, such as windows, doors, and rooflines, without the clutter of interior details. While other types of drawings like detail drawings focus on specific components, blueprints offer comprehensive construction specifications, and floor plans highlight the layout within, elevations specifically capture the vertical aspects of building design. Thus, they are essential for conveying the overall aesthetic and architectural intent of a structure.