Hangar Expansion Provides Upgrades While Preserving Historical Elements
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Location: Naval Air Station Whidbey Island, Oak Harbor Washington

NAS Whidbey Island (NASWI) is currently transitioning platforms from the P-3 to the P-8A Poseidon. The P-8A is significantly larger than the P-3, which required a 14,000 square foot addition to Hangar 6 to extend the existing two hangar bays and modify the ceiling to accommodate the aircraft. In addition to the expansion, 100,000 square feet of Hangar 6 received a comprehensive renovation, including the demolition of existing finishes and modernization of the heating, ventilation, air conditioning, electrical system, and interior finishes. The design-build renovation also reorganized and upgraded Hangar 6 maintenance shop spaces, administration offices, and building support spaces on the first floor. New training facilities and a classroom were added to the mezzanine level. Constructed in 1954, Hangar 6 is also a historically-registered building, and project work required coordination with the State Historic Preservation Office (SHPO)/Department of Archeology & Historic Preservation (DAHP).

During the renovation of Hangar 6, a temporary extension of Hangar 9 was required to allow P-3C aircraft originally housed in Hangar 6 to be fully enclosed during the construction period. The 5,000 square foot tent fabric extension provided the necessary accommodations to Hangar 9 and was removed at project completion.

Project complexities included extremely tight site restrictions, eight-phase construction sequencing that allowed the facility to remain operational during construction, and incorporation of a multitude of sensitive compartmented information facility (SCIF) spaces.

Design-build contractor Korte Construction selected POWER to be the lead designer, Architectural Designer of Record (A-DOR,) and overall DQCM for this project. POWER provided and managed the architectural and comprehensive interior design services while managing the civil, structural, mechanical, electrical, and acoustical engineering design for updating the structures to meet all current codes and design standards related to seismic design, anti-terrorism/force protection (AT/FP), LEED Silver-qualifying energy codes, and acoustical engineering related to occupied spaces along the controlled flight lines. Services include design drawings completed in Building Information Modeling (BIM), three-part specifications, construction administration, close-out/as-built drawings, and completion of the DD1354.