TJ-583-022A Platform and Grating Mods.pdf

This is a technical drawing set for platform and grating modifications to the NOAA Ship T. Jefferson. The drawing package consists of 14 pages of detailed engineering plans and elevations showing structural modifications to various decks and sections of the vessel.

The drawings specify steel structural components including plates, angles, and flat bars with precise dimensions and material grades (primarily A36 steel). Key modifications include grating and railing installations across multiple deck levels, with particular focus on forecastle deck, main deck, and port/starboard side installations. The materials list identifies 23 line items including flat plates ranging from 13.5" x 44" to 31" x 40", angles of various dimensions (2"x2"x3/8" through 4"x3"x3/8"), hardware components including brackets, studs, and fasteners, and miscellaneous items such as bar grating and rubber bumpers. Detailed sections and elevation views are provided showing removal and reinstallation of existing structural elements, chock removals, launch aid installations, and cable rack modifications. The drawings reference multiple existing structural conditions and specify connections to existing grating spirals and handrail stanchions. Installation details include numbered reference points indicating fabrication sequences and connection methods. Revisions are tracked with dates and descriptions noting changes to specific elevations, sections, and detail drawings throughout the modification project.