B08_Attachment_3_Drawings.pdf

These technical drawings detail the specifications for an acrylic oval water tunnel to be fabricated for the USGS Eastern Ecological Science Center. The design consists of multiple interconnected components including 60" and 30" water tunnel sections, turn sections, lid frames, and plugs, with precise measurements and part numbers specified. The technical drawings provide comprehensive dimensional details, assembly instructions, and manufacturing notes, with each component having specific part numbers like 101-005-001-1 for the 60" WC Section and 101-005-005-1 for a 60-degree turn section.

The complete set of 11 detailed engineering drawings shows orthographic projections, cross-sections, and specific detail views at various scales (1:1, 1:16, 1:32), with annotations indicating material (acrylic), fabrication notes, and tolerances. The overall tunnel has an approximate rectangular internal cross-section of 22.5 wide x 24.5 deep, with a total footprint of around 20 x 10 inches. The drawings are prepared by USGS, with specific notes emphasizing fabricator responsibilities for hole sizing, positioning, gusset sizing, and gasket/sealing material approvals.