Y-3878-20 HVAC Bridge.pdf

These technical drawings are detailed engineering schematics for the HVAC upper bridge deck and void under pilot house systems of the Dredge Yaquina, a U.S. Army Corps of Engineers vessel. The multi-page technical drawings (Y-3578-20) provide comprehensive mechanical and structural design details, including precise measurements, component specifications, and layout diagrams for air handling, ventilation, ductwork, and related mechanical systems. The drawings include elevation views, plan views, sections, and a detailed list of materials, with annotations specifying components like acoustic insulation, rubber gaskets, flex connections, fans, silencers, and various structural elements. The documents appear to be part of a technical design package for the vessel's HVAC infrastructure, produced by Nordskog Incorporated for the U.S. Army Engineer District in Portland, Oregon.