What are construction blueprints that reflect marked changes called?

Construction blueprints that reflect marked changes are typically referred to as red lined prints. This term originates from the practice of using red ink or markers to indicate revisions directly on the original set of blueprints. These revisions can include alterations to dimensions, design adjustments, or modifications in materials that have been proposed or implemented after the initial plans were drawn up. The red lining serves as a clear visual cue for contractors, inspectors, and project managers to recognize and review the significant changes made during the construction process.

Other terms related to construction documents, such as revised prints or updated plans, may signify modifications, but they do not specifically imply the use of red ink to denote changes, which is a distinctive feature of red lined prints. Hence, this term is widely accepted in the construction industry for documents that have been altered in this way.