NORSHIPCO Y-2494-1 Revision C Sheets 1 to 2 Hopper Door Frames.pdf

This is a detailed technical drawing set for hopper doors and frames used in dredge equipment. The drawings provide comprehensive specifications for the design, assembly, and manufacturing of hopper door components, including door castings, frame assemblies, hinges, and retainer bars.

The documentation includes multiple detail views and sections showing hopper door gasket assemblies, hinge pin assemblies, retainer bar and gasket configurations, and various casting specifications. Key specifications indicated on the drawings include material requirements (stainless steel, cast steel, ductile iron), dimensional tolerances, hole spacing patterns, and assembly configurations. The drawings reference a full-size scale with multiple detail views (labeled as Detail A through Detail 10-F) that provide 1/4-inch scale representations for clarity. The document is prepared for the U.S. Army Engineers District in Portland, Oregon, and is associated with the dredge Yaquina project. The builder is listed as Horshipped Shipbuilding & Drydock Corporation with design agent J.H. Inc. The drawing set is identified as document number Y-2496-1, indicating this is part of a larger technical specification package for vessel construction or repair.