Attachment AH - 18906701Amend0003-SPC-APPENDIX A2.pdf

This document is an Appendix A2 titled "Additional Reference Record Drawings" issued on April 30, 2025, for the Utility Repairs to Drydocks 3, 6, and 7 at Norfolk Naval Shipyard in Portsmouth, Virginia. The detailed technical drawings provide comprehensive plans for a utility tunnel repair and modernization project, specifically focusing on partial utility tunnel repair, demolition, and new work across multiple drydocks. The drawings include intricate schematics for steam, compressed air, fresh water, and utility risers, with detailed sections showing existing conditions, proposed modifications, and specific construction and demolition notes for various system components.

The technical drawings cover multiple aspects of the project, including utility tunnel plans, riser details, pipe supports, expansion joints, and specific repair techniques for different sections of the infrastructure. Key elements include pressure injection of cracks, concrete slab repairs, pipe anchoring, and precise measurements for steam, air, and water systems. The documents are meticulously annotated with notes on material specifications, welding requirements, steel grating details, and excavation and fill instructions, indicating a comprehensive approach to infrastructure rehabilitation at the naval shipyard.