The mechanical system consists of two 130-ton gas-fired, direct expansion rooftop units, utilizing variable air volume air distribution. Medium pressure ductwork is used from the rooftop units to the terminal units with low pressure ductwork installed from the terminal units to the air devices. The mechanical system provides individual zone control for private offices, the board room, conference rooms and training room. The remaining areas are zoned based upon interior and exterior loads. Electric reheat is utilized at the terminal units. A high efficiency gas-fired water heater is utilized for generation of domestic hot water, utilizing a pumped recirculation system.
The electrical distribution system consists of a 277/480V, 2000 Amp main distribution switchboard (MDS) utilizing a 2000 Amp LSIG insulated case circuit breaker and LSI molded case feeder breakers. The MDS feeds a 277/480V lighting panel on each floor which in turn feeds a step-down transformer which then feeds (2) 2-section, 120/208V panelboards. The MDS also feeds a 277/480V (2) section mechanical panel on each floor which in turn feeds a step-down transformer which then feeds a 42 circuit, 120/208V panelboard.
Interior lighting for the building is made up primarily of LED luminaires. Lighting in the open office areas are linear pendant mounted LED’s, offices are 2’ x 4’ LED, downlights are both fixed and adjustable LED. Fluorescent luminaires are only used in restrooms and back-of-house storage rooms. Parking lot lighting is also accomplished with pole mounted LED luminaires. Emergency lighting was accomplished by both emergency battery packs and small inverters mounted in the electrical rooms. Lighting control utilizes a very basic control system including relay panels with over-ride switches, daylighting in the open office areas, and occupancy sensors in private offices and restrooms.
The technology systems within the building consisted of security systems, audio/visual systems, and structured cabling systems for voice/data transmission. The security systems included access control consisting of card readers and electronic locks on exterior and select interior doors, video surveillance cameras distributed throughout the interior and at select exterior locations, and a duress alarm system. The audio/visual systems included a range of systems from a simple LCD monitor connected to a table in a huddle space up through various sizes of conference rooms to a fully automated executive board room system. It also included a divisible training room with capabilities to support one large event or three concurrent events. The structured cabling system delivered voice and data transmission throughout the building. This system had the flexibility to accommodate typical office environments, extensive systems furniture areas, a 24/7 help desk call center, and digital signage.
