What does a 'dashed line' typically signify in blueprints?

A 'dashed line' in blueprints is commonly used to indicate hidden elements or features that are not immediately visible in the current view. This could include things like plumbing, electrical wiring, or structural elements that exist behind walls or other surfaces. These dashed lines help the viewer understand the full scope of the design by showing elements that are important for construction or design purposes, even though they won’t be seen in the completed structure.

Understanding that dashed lines represent hidden elements is crucial for accurate interpretation of architectural and engineering drawings, as it ensures that all relevant information is considered when planning construction activities.