Location: Newport News, Va.
Size: 19,200 square feet
This project is part of the 12 GeV CEBAF Upgrade. The structures include Hall D experimental hall with an attached Counting House of 14,700 square feet, extension of the existing underground concrete tunnel, support service buildings of 4,500 square feet and associated roads, sidewalks, earth berm with retaining walls and utilities to support the complex.
Hall D is a single story, 45 feet high structure constructed of concrete, steel framing and insulated architectural metal panels with a silicone coated polyurethane foam roof. The finish floor is approximately 14 feet below existing grade. Hall D has stair access from the Counting House and an enclosed truck access ramp with rollup doors.
The Counting House is a single-story, slab-on-grade, steel-framed structure building with insulated architectural metal panels. The building contains office and support spaces and a control room for use while running experiments in Hall D. The existing underground concrete accelerator tunnel will be extended approximately 200 lineal feet to the Tagger Area. The Tagger Area is an underground concrete structure of approximately 6,600 square feet with an enclosed truck access ramp with rollup doors.