TMG renovated approximately 5,900 SF of existing office space and built out a state-of-the-art, mission-critical Integrated Operations Center. Specifics of the project included the installation of new MEP and Fire Protection systems supported by a 450-KW back-up emergency generator, a 60-ton chiller, and a 270-gallon fuel tank. To accomplish this, the existing chiller platform on the building’s roof was relocated to a different bay, necessitating the extension of all associated piping, along with re-routing the chiller unit feeds (both electrical and plumbing) from within office space on the 11th floor and creating a new chase for the re-routed pipes by core drilling through the decks and on to the roof. Interior renovations included reconfiguration of walls, installation of interior finishes, and installation of a new electric meter.
The mechanical/electrical scope included installation of an automatic transfer switch (ATS), a 10 GPM fuel transfer pump capable of supplying fuel to all 10 floors, three 30-ton air-cooled chillers set up as a single unit, 11 fan coil units, and one computer room air conditi oning (CRAC) unit. The CRAC unit was installed in one of three adjacent SCIF rooms, requiring the removal of an existing CRAC unit and installation of the replacement unit, followed by rebalancing of the air CFM in all three SCIFs.
Associated structural work involved the construction of two structural steel framing platforms with a perimeter of metal grating platforms to distribute the loads/weight of the generator and chillers to columns that supported the Energy Star roof unit. This, in turn, raised the access doors to the chillers and generators off the roof top and required metal grating/platforms be installed around the units for access.
Interior work included the build-out of a conference room and installation of wireless networking, video surveillance cameras, and voice systems.
All work was completed after hours and on weekends within the fully occupied and operational building. Site constraints included very limited staging areas, which required construction debris to be removed daily.
Working in a heavily congested area of the city, TMG facilitated three major road closures for the rooftop chiller and generator installations. TMG’s project team worked with the District Department of Transportation (DDOT) to obtain permitting for the road closure and traffic control measures. The project also included a Traffic Control Plan. The lifts, which lasted from four to 12 hours, were performed in the pre-dawn hours on Saturday to minimize congestion during traffic rerouting. Traffic Control measures involved posting notices of the closure 24 hours in advance, cordoning off the lift area, and posting flaggers to direct traffic.