Forward Operating Base, NAS Jacksonville

Naval Air Station Mayport, FL

Project Narrative

Exterior Openings & Finishes: The main entry access to the operations offices is a storefront on the west side of the building. The exterior finishes will be coordinated with the materials and color pallet of the Naval Base. The hangar exterior will be split face concrete masonry base with insulated metal wall panels above supported by wall purlins to the full height required.

Hangar Roof: The roof slopes away from the flight line at 1/4” in 12”; drainage is provided by exterior gutters and downspouts tied into the underground storm drainage system. The roofing system on the building will be a standing seam with rigid insulation. The thickness of insulation will be calculated to provide maximum building envelope energy efficiency.

Hangar Bays: The hangar bays are design to house 4 Triton airplanes at the same time. The hangar bays will provide two doors with vertical lift fabric doors. This door will have a catwalk at the top for required maintenance and service to door machinery.

Daylighting Betterment: As an improvement to the daylight access in the operations offices, skytubes were provided to the rooms on the north side of the building as the shops areas with no windows at the west side of the building.

Fenestrations: The hangar bays will provide a clerestory translucent wall panels as a way to bring natural light into the hangar bays. The translucent panels will be at the two sides and the front of the building. These panels will be fixed aluminum insulated windows.

Special equipment: 10-ton bridge crane; special interior construction includes a paint booth. The hangar bay is protected by an aqueous film-forming foam (AFFF) fire suppression system integrated into the building structure. In addition to standard electrical and telecom rooms, two SIPR NET rooms are provided. Interior Secure Boundary and Shielded Perimeter: The space layouts of the Secure Area and Shielded Perimeter Area are similar to the layout indicated in the RFP. The concrete floor of the Secure Area will be depressed 1 foot to accommodate flush access flooring. The concrete floor of the Shielded perimeter will be depressed 2 feet to accommodate flush access flooring.

Sustainable: The building has been designed to maximize energy efficiency. To comply with GBI Guiding Principles energy related requirements, the building envelope, MEP systems, controls, and equipment have been designed (and/or will be selected) to be highly efficient.

  • Building envelope: Exterior wall assemblies have been designed with a high R-value to minimize heat gain/loss in the building.  Exterior shading devices and insulation of the hanger roof will be calculated to provide a highly energy efficient building envelope.  Daylighting is provided to reduce the electrical lighting load.
  • HVAC: Heating hot water will be provided by a high-efficiency condensing type hot water boiler, and chilled water will be provided by a high-efficiency air-cooled chiller with a variable flow chilled water system.  The building will be ventilated by an outdoor air energy recovery system to assist with preconditioning and dehumidification of ventilation air.  Both supply and exhaust fans are provided with variable speed drives for energy conservation.   The hangar will be heated with radiant overhead heaters and will be ventilated.
  • Plumbing: The plumbing systems have been selected to provide an efficient domestic hot water system using high-efficiency condensing gas fired water heater.  The unit recaptures waste heat from flue gases and can operate at efficiencies exceeding 95%. Additionally, efficient plumbing fixtures have been selected to reduce water use and domestic hot water load.
  • Electrical:  The power and lighting systems have been selected to provide for high efficiency.  Lighting will be provided using highly efficient sources and fixture configurations for each application.  Use will be controlled by a combination of local, manual, and automatic occupancy sensing controls to provide flexibility and reduce energy use.
  • Equipment: Equipment selected by the design team will meet ENERGY STAR requirements where available. 

Integrated Design Principles have been and will continue to be used throughout the design process to implement sustainability best practices.    

Building Information Modeling (BIM): Giuliani Associates and the Design/Build Team developed a NAVFAC BIM Execution Plan. For each BIM Use required for the project multiple project roles. The GAA coordinated the roles for the Design Facility Data, Design Modeling and Clash Detection (3D Coordination). Then the BIM Model was coordinated w/ the design team to develop a BIM Model to a Level of Design (LOD) of 300 for all disciplines working on the project. The BIM was used along with other models to perform clash detection of the project using Autodesk Navisworks. The team used this clash detection in weekly design progress meetings are held using web-conferencing software, to discuss design and constructibility issues.

Client: NAVFAC / Southeast

Size: 76,000 SF

Completion Date: 2020

Project Statistics

Square Feet Dollars Months D/B Years

Design & Construction Team

Hensel Phelps - Design / Builder

Atkins - Civil Engineer

Thornton Tomasetti - Structural

Newcomb & Boyd - M/E/P

PFP - Fire Protection Engineering