Attachment A1 - PNSY B300 Roof and HVAC Repairs - Final - Plans.pdf

This file is an architectural and engineering plans document for the B300 Waterfront Machine Shop roof and HVAC repair project at Portsmouth Naval Shipyard. The plans provide detailed technical drawings and specifications for the comprehensive renovation of Building 300, a manufacturing and machining facility constructed between 1979 and 1984. The project scope includes removal and replacement of the deteriorated roof system with a new 0.080 thermoplastic polyolefin (TPO) fully adhered membrane assembly, complete demolition and replacement of all air handling equipment and associated ductwork, abatement of asbestos-containing materials within the ductwork, and containment of RCRA 8 dust. The HVAC replacement includes removal of the existing steam-to-hot water plant and installation of unit heaters and dedicated outdoor air systems with destratification fans for the industrial work areas.

The plans also document electrical and fire safety system upgrades, including removal and replacement of the fire alarm, mass notification system, and fire sprinkler systems serving the industrial areas. Electrical work encompasses replacement of the existing 2500 kVA main service transformer feeding Switchgear 4, replacement of the 15 kV service switch, and replacement of 480V main and feeder switchgear. Site improvements include utility construction and restoration of disturbed areas resulting from demolition activities. The Solicitation Number is N4008526R0029, issued by the Department of the Navy Naval Facilities Engineering Command, with this attachment providing the technical foundation for contractor bid preparation and project execution.