Where can one expect to find zone numbers when reading a blueprint?

Zone numbers are typically found throughout the drawing to help orient and identify specific areas within the blueprint. This is particularly useful for large plans where multiple sections or details are presented. By distributing zone numbers at various locations in the drawing, it becomes easier for those reading the blueprint to reference specific areas and correlate them with other documents, such as schedules or specifications.

The presence of zone numbers throughout the drawing enhances clarity and navigation, ensuring that everyone involved in a project can efficiently locate and understand individual components or areas without confusion. This systematic placement of zone numbers aids in communication among architects, engineers, contractors, and workers.

The other options suggest more limited placements that would not provide the same level of functional guidance throughout the entire blueprint. For instance, having zone numbers only on the side or in the lower corners could make it challenging to find reference points in larger or more complex drawings.