Shop drawings provide the specifications, measurements, and instructions needed to ensure that each design component fits as intended in the design as a whole. In construction, they can include; Schedules, Diagrams, Illustrations & drawings, Brochures, Sample submittals. The benefits of shop drawings are many and include reduced project costs, enhanced productivity, and improvements to the delivery schedule A Shop Drawing is prepared by a contractor, sub-contractor, manufacturer or a supplier for the manufacturing, assembling and installation of prefabricated components in a construction site.