Who typically prepares shop drawings and for what purpose?

• A. Architect
• B. Owner
• C. Contractor or subcontractor
• D. Building inspector

Answer: (C)

Shop drawings are the detailed fabrication and installation drawings used to show exactly how components will be manufactured and assembled on site. They translate the design intent into precise, build-ready details.

Typically prepared by the contractor or a subcontractor who fabricates or installs the components—such as structural steel, millwork, finishes, mechanical ductwork, or glazing—these drawings specify exact dimensions, materials, tolerances, anchors, connections, and installation sequences. They also help coordinate with other trades and identify any field conditions or clashes before fabrication starts. The design professionals provide the overall design intent, while shop drawings confirm how that intent will be realized in practice and are usually reviewed for conformance before fabrication or installation proceeds.