Our third-year sheet metal apprentices are connecting technical drawings, precision fabrication, and field installation through a comprehensive overhead ductwork project. The assignment takes students through the full construction process—from prefabrication drawings and fitting fabrication to installation, as-built documentation, and a total job cost breakdown.

The work begins with prefabrication drawings, where students translate project requirements into the information needed to build and assemble their duct systems. This stage reinforces dimensional accuracy, fitting layout, and planning before fabrication begins.

Apprentices then fabricate the required fittings and install their overhead systems as though the ductwork will remain exposed. That approach places added emphasis on alignment, fit, consistent workmanship, and the finished appearance of the installation. Each connection contributes to both the function of the system and the quality of the completed project.

Once installation is complete, students prepare as-built drawings to document the final configuration. They also develop a total cost breakdown to evaluate what it takes to complete the job, connecting shop and field decisions to the financial side of construction.

By bringing drafting, fabrication, installation, documentation, and cost analysis into one assignment, this project helps apprentices understand how each phase affects the next. It builds the technical judgment, planning skills, and accountability needed to move a sheet metal project from a drawing to a finished installation.