Sheet metal - Checks shop drawings for compliance with various building codes (duct liners, hangers, duct connections, etc.) Checks ceiling space allotments carefully; flattening ductwork where feasible, rerouting ducts if necessary, etc. Whether world-class airports and aviation facilities, technologically advanced healthcare facilities, cutting-edge educational and research facilities, professional sports stadiums, high-rises, hospitality, and other leading commercial markets, Austin's industry expertise and ingenuity are second to none.