This Design-Bid-Build Project included comprehensive design services for the renovation and addition to Building 1791, a 24/7 Mission Critical facility originally constructed in 1968 which houses the Airfield Rescue and Fire Fighting Unit (ARFF) at MCAS Cherry Point. The renovation to the approximate 10,406 SF (including new addition) facility includes roof replacement, replacement of all exterior doors and windows, refurbishment of exterior masonry, reconfiguration and enlargement of interior spaces, new finishes, and new FF&E. The project includes a building addition to enlarge the Apparatus Bays to accommodate new larger P-19R Apparatus and P26 Tanker/Water Tender vehicles as well as to create additional space for 73 personnel gear lockers. To allow the ARFF Unit to remain operational throughout construction, temporary facilities are being provided for the duration of construction, within the Level 2 secure area and within close proximity to the airfield.

Mechanical System: The mechanical system scope of work includes replacement of the HVAC system in its entirety, including heating hot water and fuel oil piping, boiler, controls, air handling units, and exhaust systems. A 30-year life cycle cost analysis was performed to justify the new mechanical system selection consisting of a Dedicated Outdoor Air System (DOAS) with total energy recovery, unitary Direct Expansion (DX) split system heat pumps, packaged DX rooftop air handling unit, gas-fired heating and ventilating unit, gas-fired radiant heaters, and a commercial kitchen ventilation system. The Apparatus Bays also include an air purification system, controlled based on signals from carbon monoxide and nitrogen dioxide detectors as well as transmitters in ARFF vehicles when ignition switches are turned on. The project included new Facility Related Controls Systems (FRCS) and connection to the existing base-wide Energy Management Control System (EMCS).

Plumbing Systems: The scope of work for the project includes replacement of the entire plumbing system. This includes new domestic cold and hot water piping, hot water return piping, sanitary waste and vent piping, gas-fired condensing water heater, and all new plumbing fixtures to meet the water efficiency requirements of UFC 1-200-02 and ASHRAE 189.1, section 6.3.2.

Electrical Distribution System: The electrical system scope of work includes a complete replacement of the interior electrical systems, motors, and controls back to the overhead Medium Voltage source. A new pole-mounted transformer is being provided to serve the renovated building. All panelboards are being replaced and an optional stand-by Emergency Generator and service entrance Automatic Transfer Switch are being provided for full building backup of the electrical distribution system. The project also includes all new energy efficient LED lighting fixtures throughout the building and complete replacement of the entire electrical and telecommunications system infrastructure. The new HVAC, Building Automation, Lighting, and Plumbing Systems are all being commissioned in accordance with UFC 1-200-02.

The electrical design also includes provisions for power for temporary trailers while the building is being renovated. This design includes provisions for extending the existing overhead medium voltage system, via new utility poles, to the trailer location. Temporary pole mounted transformers are being provided for this interim service.

Fire Suppression System, Fire Alarm & Mass Notification System: The project also includes a new fire service and new supervised automatic fire suppression system for the previously unprotected facility as well as a new automatic combination fire alarm and mass notification system.

Inside and Outside Plant Telecommunications Systems: The project includes removal of the existing telecommunications horizontal raceways, outlets and cabling in their entirety. The existing wall mounted telecommunications cabinet and associated Outside Plant (OSP) cabling is being relocated. The existing OSP duct bank will be intercepted and extended as required. The Base Telephone department will furnish, install, test, terminate and perform splicing of the OSP cabling (Copper and SMFO) in the existing manhole.  New horizontal raceways, outlets, and cabling (Cat 6 UTP) is being provided. Wire basket cable tray is also being provided above the accessible hallway ceiling.

The temporary trailer compound will be fed from an existing manhole with one (1) 4” PVC conduit, direct buried, with one (1) 3” 3-cell fabric mesh innerduct. One (1) 25 pair copper telephone cable and one (1) 12 strand SMFO cable, both OSP rated, will be provided.

The existing building and crash net public address systems are being removed in their entirety. Two new PA Systems will be provided with both interior and exterior speaker coverage. A building PA System desk mounted microphone will be provided in the building’s associated control tower. The building crash net system will be interfaced with the existing crash net handset located in the building’s associated control tower. The temporary trailers will also be provided with building and crash net public address systems. These systems will also be interfaced with the systems in the building’s associated control tower.

Sustainable Design Features: While LEED or Green Globes certification was not required for this project, the project was designed to meet the High Performance and Sustainability Requirements of UFC 1-200-02.