By Mario Icari, Naval Facilities Engineering Command Southwest Public Affairs Office
SAN DIEGO (NNS) -- Marine Corps Air Station (MCAS) Miramar and Naval Facilities Engineering Command (NAVFAC) Southwest representatives cut the ribbon Sept. 11 to the new MV-22 aircraft maintenance Hangar 7, Hangar 4 maintenance hangar addition, and new apron and taxiway signifying their completion at MCAS Miramar.
These facilities were designed and built to enable the operation of both the MV-22 (medium lift) aircraft and CH-53 (heavy lift) helicopter.
"This is the first hangar for MV-22 at which serves at the West Coasts a foundation for future hangars," said Rufino Paje, NAVFAC Southwest project manager. "Specifically, this project will accommodate and maintain the MV-22 squadrons; conduct MV-22 readiness and training operations; and conduct special exercise operations to attain and maintain proficiency in the operational employment of the MV-22. In essence, it is the home for the MV-22 Osprey and the CH-53 Sea Stallion aircrafts at the West Coast."
Hangar 7, at 143,415 square feet, is the largest construction project awarded and completed at MCAS Miramar.
The MV-22 is a medium lift American military, tilt rotor aircraft with both a vertical takeoff and landing and short takeoff and landing capability. Designed to function like a conventional helicopter and to perform as a turboprop aircraft, allows for mission use for the U.S. Marine Corps to include transportation of troops, equipment, and supplies from ships and land bases for combat assault and assault support. The CH-53 is a heavy lift, transport helicopter. The MV-22 is larger and heavier than the CH-46 Sea Knight helicopter it will eventually replace.
The 845,500 square foot new apron and taxiway expansion was constructed of High Temperature Concrete (HTC) to handle the weight and the greater heat signature from the jet exhaust being directed toward the apron surface. The apron consists of nearly one million square feet of 14" inch thick concrete, totaling over 36,000 cubic yards of concrete. The new apron and taxiway do not have metal reinforcement bars (rebar) which is contrary to standard practice in the construction industry. This feature is to prevent the introduction of magnetic signature which could interfere with the proper operation and functioning of the aircraft's navigational compass.
NAVFAC Southwest awarded the construction contract to Hensel Phelps and Granite (joint venture) of Irvine, Calif. on Sept. 20, 2011 with the total contract value at over $100 million for the design and construction of an aircraft taxiway expansion and aircraft maintenance hangar addition at Marine Corps Air Station (MCAS) Miramar.
"In terms of dollar value, the MV-22 was the biggest project at over $100 million, which we had awarded in fiscal year 2011 at NAVFAC Southwest," said Betty Chu-Chang, NAVFAC Southwest contracting officer for this project. "Initially, this project was supposed to be completed by Sept. 19, 2014. It is now completed ahead of schedule and within budget."
The ceremony was held on the 12th anniversary of the Sept. 11, 2001 terrorist attacks, and was highlighted with personal stories from U.S. Marines and Hensel Phelps employees of their experiences that day and the significance of the completion of this facility on this anniversary.
Hangar 7 and Hangar 4 addition were able to reach U.S. Green Building Councils Leadership in Energy and Environmental Design (LEED) Gold certification when the design build requirements were set for LEED Silver certification. The project team came within five percent of LEED Platinum certification.