Image of P-8 flying with Naval Air Station Patuxent River in the Background Courtesy of the US Navy.

Architect: Giuliani Associates
Commissioning Agent: SGM Engineers
Design/Builder: Hensel Phelps
Geotechnical Engineer: GeoConcepts
Civil Engineer: Timmons Group
Electrical Engineer: M. C. Dean
Mechanical Engineer: Southland Industries
Life Safety & Fire Suppression Designer: PFP Engineering & Design
Fire Suppression Designer: Continental Fire Sprinkler


Giuliani and Hensel Phelps were awarded the Broad Area Maritime Surveillance Testing Facility at Naval Air Station Patuxent River, MD. Giuliani provided architecture and interior services on this thirty million dollar project for NAVFAC Washington.

Project Description:  The 72,000 SF testing and evaluation facility includes a 32,000 SF hangar bay, 35-feet high with 75-feet long-span trusses, to accommodate three BAMS Triton unmanned aircraft systems platforms, along with a 40,000 SF two-story support area with associated maintenance, operations, laboratories, storage, private offices and open administrative spaces. The project also includes an aircraft parking apron, taxiway access, line vehicle parking spaces, a fiber distribution node and shelter, roadways, on-site parking and other site improvements.

The support areas include three evaluation labs: mechanical testing (800 SF), avionics testing (800 SF), and instrumentation testing (600 SF).  A mission control suite contains two 500 SF training/operations rooms with a central 500 SF instructor observation room, supported by a secure 1,000 SF server room.  Aircraft performance data is evaluated by engineers and analysts housed in a 1,600 SF secure suite supported by a dedicated server room.  The testing and evaluation functions are supported by an 11,000 SF open office areas, 1,200 SF private offices, two 600 SF conference rooms and two 400 SF secure briefing rooms.

The maximum height restrictions imposed on the building by the adjacent runway transitional zone, along with the required crane and hangar door clearances, severely limit the depth available for the roof’s structural framing. In response, the hangar facility includes a highly efficient cantilevered beam configuration, with fore and back stays located above the roof, but below the exterior height restriction.

The exterior character of the building conforms to the Patuxent River Base Installation Appearance Plan: cavity wall construction with a split face CMU exterior of light integral color to complement adjacent buildings. All windows exceed ASHRAE 90.1 standards and meet the AT/FP requirements of UFC 04-010-01. Ten individually-operated 28 feet high hangar doors clad in pre-finished steel panels provide access for the aircraft; outrigger enclosures allow the entire 320 feet of the apron face of the hangar to be open for aircraft maneuvering. To provide daylighting in the hangar bay area, the building design includes a fascia above the hangar doors of translucent fiberglass-sandwich-panels. The low-slope roof is covered by 3-ply modified bitumen roofing; drainage is provided by exterior gutters and downspouts tied into an underground storm drainage system.

Special equipment includes a 5-ton bridge crane; special construction includes two secure suites designed in accordance with ICD / ICS 705, and a radio-frequency shielded enclosure for the mission control suite. In addition to standard electrical and telecom rooms, three specialized data processing server rooms are provided.

Sustainability features include roof-mounted solar panels for heating domestic water. Based on EPACT ’05 criteria, an overall energy savings of 60% is anticipated as the result of the following features: highly efficient HVAC system, thermally improved exterior envelope, high-output lighting fixtures with daylighting harvesting controls, and overall building-wide controls system.  USGBC Certification: LEED Silver.

Professional Services:  Giuliani Associates provided architectural services for the design-build team:

  • Facilitating an “on-board” concept design workshop (CDW) for stakeholders
  • Incorporating changes resulting from the CDW into the project design
  • Developing the facility to comply with the Patuxent River Base Installation Appearance Plan
  • Preparation of drawings and specifications to comply with Department of Defense standards
  • Consultation with air station facilities personnel, NAVFAC staff, and air systems design personnel
  • Coordination and review of technical information among all design-build team members
  • Coordination of engineering distribution systems and raised access flooring systems
  • Coordination of SCIF and radio frequency shielding enclosures with building architecture & structure
  • Finish materials selection and development of the structural interior design (SID)
  • Selection of furnishings and preparation of Fixtures Furnishings & Equipment bid package
  • Preparation of drawings and specifications for signage bid package
  • Provision of construction support services (submittal review, RFI responses, and contract amendments)