- The Durst Organization
- New York, NY
Hunter Roberts provided construction management services for a new 4,800-SF, three-story corner retail addition to 675 Third Avenue and the installation of two emergency rooftop generators and other rooftop mechanical equipment required to service both the addition and existing retail space in the adjacent property at 201 and 205 East 42nd Street. The existing property was a five-story walk-up with residential units on the top floors and commercial areas in the basement. Tightly constrained on the corner of Third Avenue and 43rd Street, the logistics required diligent pre-planning and staging to demolish the existing buildings and erect the new structure safely within the heavily trafficked 42nd Street business district. Demolition consisted of the complete removal of the existing structure down to the basement, fully disconnecting the water, sewer, and storm lines, assisting with the gas and electric disconnects, all sidewalk bridging, scaffolding / netting, and the construction fence. The basement contained a fuel oil storage tank, which required removal, as well as a small amount of contaminated soil due to the presence of petroleum compounds. After abatement and the removal of 1,400 CY of rock, the glass curtain wall-faced retail space was constructed and white boxed for a future tenant fit-out.
The generators were installed to service almost 1 million SF of commercial buildings for life safety, mechanical equipment, elevators, and all emergency power needs. The installation of conduits throughout the two existing buildings required the coordination with the building engineers, management, security and the building tenants to assure that interruptions to the building services were kept to a minimum. Con Edison shutdowns were required to allow for the connection of the new emergency service and the maintenance of the existing main switches. To assure unforeseen conditions were identified and quantified, all conduit paths were reviewed and confirmed prior to purchasing the project. This allowed for cost certainty from the original budget during pre-construction to the final construction budget.