Squadron Operations/AMU Hangar

Squadron Operations/AMU Hangar

Location: Eglin Air Force Base, Fla.

Client: U.S. Army Corps of Engineers, Mobile District

Completion Date: 2011

This 110,845-square-foot Joint Strike Fighter Marine Corps/Navy hangar is a single facility accommodating a Marine Corps squadron and a Navy squadron. The facility comprises two six-bay maintenance hangars with an adjoining single-story structure containing maintenance shops on the flight line side and squadron operations and maintenance administration on the land side.


The aircraft maintenance unit (AMU) hangar is approximately 164 feet by 148 feet. A 10-ton and a 5-ton bridge crane are required in the Marine Corps hangar bay while the Navy hangar bay requires a 5-ton bridge crane.

The hangar is the most prominent feature of the facility and will be the first of its kind to house the new generation of F-35 aircraft. It will also serve as the model for future hangars for the Navy, Marine Corps and Air Force as part of the Integrated Training Center at Eglin. The design is clean and modern and provides unique features supporting maintenance functions. The epoxy mortar flooring system will provide a highly reflective and durable finish that is chemical and impact resistant.

Aircraft can be powered-up by 270 Vdc converters with cables around the perimeter and in the floor. Floor pits provide shop air as well as power for hydraulic carts and AGE to prevent tripping hazards while working around the aircraft. Avionics and cockpit instrumentation are cooled by dedicated air handling units ducted under the floor to each aircraft position.

Design challenges included providing the functional requirements within the authorized scope while maintaining cost and addressing building massing and architecture. Multiple hangar concepts were developed to minimize the area of the hangar, resulting in a pull-through configuration with vertical lifting fabric doors that eliminated the need for door pockets.

Operations and maintenance administrative areas are adjacent and share common mechanical, electrical and sensitive compartmented information facility (SCIF) constructed space. Building massing is reduced through the use of single long-span slopes extending from the high-bay hangar over the adjacent administrative and shop areas providing clean and simple lines to the buildings architecture. Pre-insulated metal and translucent panels let natural light into the high-bay portion of the hangar.

This project complies with the base's architectural compatibility plan and is sympathetic to surrounding architecture. The building’s form promotes and assists existing hangars and facilities though its simplicity. The highly reflective white standing-seam metal roof contributes to the energy efficiency of the building. Somewhat of an anomaly from surrounding buildings, this roofing system will become the standard for three additional AMU hangars to be constructed along the flightline. Serving primarily as an aircraft maintenance facility, the vertical lifting fabric doors provide a clear span allowing flexibility to accommodate larger aircraft with varying wing spans.

This project is registered with the U.S. Green Building Council, seeking 30 credits under the Leadership in Energy and Environmental Design (LEED) New Construction rating system. It incorporates significant energy saving components that will lower operational costs. The building envelope exceeds all minimum requirements of ASHRAE 90.1-2004. The lighting power density was reduced below the maximum in ASHRAE 90.1-2004, and high-efficiency light fixtures and occupancy sensors were added to further reduce lighting power consumption.

Water consumption will be reduced by more than 30 percent with low-flow and dual-flush fixtures and automatic-flush sensors. Landscaping incorporates native species; no permanent irrigation systems will be installed. Durable finishes such brick, precast concrete, factory-finished metal roofing and siding, and epoxy and terrazzo flooring will reduce recurring maintenance costs.