The new Police Station Building will be approximately 8,040 SF and constructed as a Risk Category IV building. Risk Category IV buildings are considered to be essential buildings for consistent use particularly in response to disasters such as hurricanes. The station will include 1,140 SF interior renovation, 900 SF lobby addition, and a diesel generator for emergency power.

The 7,140 SF existing portion of the facility includes (only 1,140 SF of the existing facility will be renovated):

• Office Space
• Conference/Training/Command Center
• Conference Briefing Room
• Fitness Area
• Co-Ed Lockers
• Showers
• Men and Women Bathrooms
• Evidence Packaging and Associated Evidence Rooms
• Copy/Mail Room
• Records Storage
• Supply Rooms
• Kitchen
• Utility Closets

The new 900 SF lobby addition to the facility will include:

• Lobby Area with Seating
• Administrative / Receptionist Area
• Toilet Room
• Soft Interview Room
• Electrical/Communications Utility Room
• Corridor

PACE Collaborative provided the mechanical, plumbing, electrical, fire protection and special systems design for the existing facility and new addition to the facility in accordance with the North Carolina Building Code (NCBC), 2018 edition, including all referenced Model Codes and Standards.

The existing mechanical equipment, ductwork, and air terminals were removed except for the Air Handling Unit and associated Heat Pump serving Room 145. The facility is conditioned by a Variable Refrigerant Flow (VRF) System with Heat Recovery with a total cooling capacity of 12 Tons. Ventilation for each building is preconditioned and temperature neutral delivered by a Packaged Dedicated Outdoor Air Unit (DOAS) (Direct Expansion Cooling and Electric Heat). The DOAS has 1100 CFM capacity with energy recovery and modulating hot gas reheat. The IT/Data and Communications Rooms are served by a Ductless Split System and associated Heat Pumps. Controls are manufacturers’ stand-alone controllers.

Environmental exhaust for restrooms, janitor closets, and locker rooms are ducted to the DOAS Total Energy Recovery Wheel and out of the building. Environmental exhaust for Evidence Narcotics Room 121 is handled by a cabinet exhaust fan with ECM with speed controller and flip switch.  All ductwork includes vibration isolation systems to control vibration and noise transmission from mechanical equipment. Airflow balancing dampers are installed at the takeoffs to each grille, diffuser, and register. Fire dampers were provided where required by code.  Duct smoke detectors were provided per code.  Mechanical and electrical equipment, associated piping and ductwork are mounted on vibration isolators to minimize transmission of vibration and noise to the building structure or spaces.  Mechanical rooms are heated for freeze protection with standalone electric heaters.

The plumbing system consists of all fixtures, potable domestic cold and hot water piping and equipment, piping insulation, water heating equipment, sanitary waste and vent piping systems, storm water systems and other specialty piping and equipment located within 5 feet of the building line.  Stormwater is collected by existing to remain gutter and downspouts that discharges to existing exterior stormwater piping system.

The electrical design included providing an interior and exterior system consisting of service entrance wiring and equipment, distribution and lighting panelboards, conduits, feeder and branch circuits, motor control equipment, lighting and branch wiring, cabling systems for the data, communication and CATV, emergency lighting and power, and grounding, including accessories and devices as necessary and required for a complete and usable system. 

Normal power electrical service was brought to the project site by Dominion Energy (DE). Secondary conductors were kept to less than 50 feet in length so that they may be provided and installed by DE and run to a pedestal installed by the contractor.  The service distribution is provided by an 400A, 208/120V, 3 phase, 4 wire main circuit breaker distribution panelboard “MDP”. “MDP” shall distribute power throughout the building to branch panelboards and large loads such as HVAC equipment, etc. 

Power is distributed throughout the building to 208/120V panelboards located in room 121. Branch circuit panel boards shall be equipped with 20% spare breakers. Distributions panelboards have 50% spare breakers.  All electrical power distribution components have a short circuit withstand rating that exceeds the available fault duty at that point in the system.  A 208/120-volt, 3-phase, 4-wire diesel engine-driven standby power generator set is provided to serve the entire building.

A complete equipment grounding system was provided such that all metallic structures, enclosures, raceways, junction boxes, outlet boxes, cabinets, machine frames, and all other conductive items operate continuously at ground potential and provide a low impedance path to ground for possible fault currents.

Lighting fixtures are 120-volt, LED type, with 3500 – 4100 kelvin color temperature.  Emergency lighting is provided through emergency batteries integral to the lighting fixtures in the corridors, event / conference / meeting rooms, lobbies, toilets, storage, equipment rooms, and offices.  Exterior lighting is controlled via a lighting control panel. Dimming switches with vacancy sensors are used in offices, conference/meeting rooms, and seminar rooms/classrooms to provide flexible light levels for the user. Lighting controls (other than toggle switches) are utilized where appropriate.

The building conduits are GRS, IMC, or EMT unless otherwise noted. Wiring and cable are soft drawn, annealed copper with 600-volt insulation.  Backboards, grounding, outlet boxes with conduit stub-out above corridor ceiling to cable tray, basket type cable tray through the corridors to the IT room and ladder type cable tray in the IT room were contractor provided.

The fire alarm control panel is an intelligent device addressable, analog detecting, low voltage and modular, with digital communication techniques, in full compliance with all applicable codes and standards.  The fire alarm system is a complete, electrically supervised fire detection and notification system, microprocessor-based operating system having the following, capabilities, features, and capacities:

• Communication between network nodes, each supporting an interactive, self-standing, intelligent local control panel, with system wide displays.
• The local system provides status indicators and control switches for all of the following functions:
  • Audible and visual notification alarm circuit zone control.
  • Status indicators for sprinkling system water-flow and valve supervisory devices.
• Any additional status or control functions as indicated, including but not limited to emergency generator functions, fire pump functions, door unlocking and security with bypass capabilities.

The network system is for the entire building and has audible and visual alarm notification throughout the entire facility and mounting locations comply with the ADAAG.