Construction Cost: $35 Million

Square Feet: 110,795 new | 59,300 demolition

Designed to LEED Silver Standards

Professional Services Completed: 2013
Construction Completed: 2015

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Mechanical Principal: Gene Schmidt

Mechanical Engineer: William Jones

Energy Specialist: Gene Schmidt

Electrical Principal: Todd Nicholson

Structural Principal: Stuart Smith

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Services Provided: Communications / Audio Visual, Electrical, Mechanical, Plumbing, Structural

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Schmidt Consulting Group (SCG) provided mechanical, electrical, plumbing, structural and communications design services for new and renovated facilities for the Special Operations Forces (SOF) Aviation Foreign Internal Defense (AvFID) Operations and Maintenance Facilities at Duke Field.  Demolition of two facilities was also included in the project scope. 

 

919th Special Operations Wing Facility

The new 2-story 78,700 sf squadron operations building includes office/administration, training and classroom, secure space, planning, and operational storage and maintenance areas for active and reserve component organizations.  The facility was designed to meet LEED Silver Standards.

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MECHANICAL

The HVAC system includes multiple new chilled/hot water VAV air handlers, air terminal distribution systems with energy recovery units and a centralized exhaust system.  The energy recovery systems utilize total energy recovery wheels that transfer latent and sensible cooling capacity from the cool building exhaust air stream to the incoming outdoor air stream in order to pre-condition the outside air, reduce building cooling tonnage, and increase building energy savings. The new chilled water system is composed of two water-cooled, high efficiency chillers feeding a single chilled water distribution loop with variable volume pumping. The chillers are served by a two-cell cooling tower with constant volume condenser water pumping. 

 

Heating and reheat demands for the facility are served by a hot water system composed of a single natural gas-fired condensing type boiler (96% efficient) feeding a constant volume hot water distribution system. All pumps are provided with fully redundant pumping capability. The plumbing systems for the new facility are composed of low flow, water conserving fixtures to enhance water savings. Domestic hot water is provided by a high efficiency, gas fired condensing water heater (97% efficient) that increases the temperature of the incoming water to a temperature of 140oF to minimize microbial growth in the stored water tank. The hot water from the tank is routed to a thermostatic mixing valve, which reduces the temperature of the domestic hot water down to a useable temperature of 110oF. The entire facility is controlled by a new Direct Digital Control (DDC) system to enable monitoring, scheduling, setpoint adjustment, and facility trending for energy use reporting. To enable the energy use reporting, the incoming water, natural gas, and electricity are metered, monitored, and trended directly by the DDC system.

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ELECTRICAL

Electric service is provided by a new 12470V to 480Y/277V, three- phase pad mount transformer and new 480Y/277V, three-phase, 4-wire electrical service.  Energy efficiency features include occupancy sensors and automatic shut off, LED and fluorescent fixtures, and daylighting controls.  Exterior building lighting uses photocells and time clock controls.

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STRUCTURAL

The facility is slab on grade with shallow concrete spread footings and a wide rib, type B metal roof deck on steel joints supported by steel frames.  The second floor framing system minimizes both weight and vibration, while providing access flooring.  The arms vault, designed according to MIL-HDBK-1013/1A, has 10 ”concrete ceiling over 8” concrete walls with offsetting bars over an 8” floor slab.  Equivalent Lateral Force Procedure seismic analysis was conducted and AT/FP UFC 4-010-01 requirements were met. 

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COMMUNICATIONS/AUDIO VISUAL/ SECURITY

The facility has a structured cabling system capable of supporting all types of voice (analog and VoIP), non-secure NIPRNet, and secure data such as SIPRNet, SCAMPI, JIANT and SOIS.  Security systems include an Access Control System with proximity readers and key pads.  An Intrusion Detection System design was included as a bid option.  A paging system for all common areas, radio equipment systems, and rough in for audio/visual and closed circuit camera surveillance were included. 

 

Washrack Support Building

The 500 sf stand-alone facility, which replaces Building 3000, provides office, toilet and mechanical space to support washrack functions.  HVAC design complies with ASHRAE 90.1 and includes a split system heat pump.  Design of plumbing for the wash rack system accommodates a high pressure (3,000 psi), 4-station, variable pressure operation with a gas fired hot water generating system.  A new 12470V to 208Y/120V, three-phase pad mount transformer and 208Y/120V, three-phase, 4-wire electrical service provide electrical service.  A structured cabling system capable of supporting voice and data (NIPRNet) was added.  Structural systems include a pre-engineered metal roof, a slab on grade system with shallow concrete spread footings, with windows and doors designed to resist IBC load requirements. 

 

B.3044 Office/Administration Facility

The 9,758 sf renovation included replacement of the existing HVAC system with a new chilled/hot water VAV air handler and air terminal distribution system.  The chiller systems and piping were reused, and a bid option was included for a new boiler system.  New door and duct openings were provided and electrical fixtures were replaced in the renovated areas.  A structured cabling system capable of supporting voice and data (NIPRNet & SIPRNet) and rough-ins for AV were provided.

 

AGE Covered Storage Building 3086

A 2,808 sf addition was designed to provide exterior covered storage and shading for the west side of the existing maintenance shop. The addition has a standing seam metal roof, slab on grade system with shallow spread footings.  The existing 208Y/120V, three-phase, four-wire electrical system and fire protection system will be connected to the addition.

 

Building 3115 Maintenance Squadron Command Facility

A major renovation (14,000 sf of the existing 16,486 sf) converted the existing Avionics Maintenance Facility to a Maintenance Squadron Command Facility with three command suites, two reserve units and one active duty unit. The new suites have open office areas for support staff surrounded by offices.  Exterior modifications included filling in two large windows.  A new chilled/hot water VAV air handler and air terminal distribution system replaced the existing system.  The chiller and boiler systems were reused and plumbing for domestic water and natural gas was provided.  The existing 208Y/120V, three-phase, four-wire electrical system was reused and a structured cabling system capable of supporting voice and data (NIPRNet) was provided.  AV infrastructure was designed.

 

Building 3117 Corrosion Control Facility

A 5,000 sf Corrosion Control Facility was added to the existing Aircraft Maintenance Shop to consolidate the existing corrosion control operations, eliminating unnecessary transport of components and increasing efficiency.  The addition includes a paint booth, blast booth, hand blast booths and personnel locker rooms and toilets.  The addition has a slab on grade foundation with shallow concrete spread footings and a standing seam roof deck on light gauge purlins, supported on steel moment frames.  The exterior matches the existing facility. 

 

Multiple split system DX heat pumps provide heating and cooling.  The bead blast booth and paint booths have separate makeup air and exhaust systems, independent of the building HVAC system.  A new 12470V to 208Y/120V, three-phase pad mount transformer and 208Y/120V, three-phase, 4-wire electrical service were provided and a structured cabling capable of supporting required wall-telephones was designed.

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Demolition of Hangar Building 3025 and Pump Building 3000

The project scope called for the complete demolition of 59,000 SF 1950’s era hangar housing office/shop/simulator spaces and storage and the 300 sf pump building.