What type of drawing illustrates how building elements fit together?

An assembly drawing is specifically designed to show how various building elements fit together. This type of drawing provides a visual representation that outlines the relationships and connections between parts, making it easier for builders and architects to understand the construction process. Assembly drawings often include exploded views, which separate components to show how they will be assembled into the final structure.

In contrast, blueprints generally refer to the overall plans for a building, often encompassing multiple types of drawings, including floor plans and elevations, rather than focusing on the connections between individual components. Detail drawings, while also focused on specific parts of a building, typically showcase a single part in greater detail rather than illustrating how multiple parts fit together. Mechanical drawings are used primarily for the design of machines or mechanical systems, lacking the specific focus on building elements that assembly drawings provide. Therefore, assembly drawing is the correct choice as it explicitly emphasizes the integration of various components within the construction process.