lux_res_marcThe MARC, a $76 million structure in New York, New York, designed by Frank Williams and Associates and engineered by Rosenwasser/Grossman of New York was developed in 2005. The attractive Midtown West building in New York City, has 393 apartments on 37 floors; ground-floor retail; a four-story, 550 car garage, and a common floor with a health club, laundry room, child care center, and other amenities.

Located between 53rd and 54th Streets on 8th Avenue and Broadway in New York City, the structure rises 43-stories (432 feet) into the city skyline, with a soaring crown accented by a flying column design.

Above the 5th floor, the MARC is a typical efficient residential flat plate building constructed of an 8-inch flat plate erected with a two-day cycle. Below the 5th floor, the building is a complicated system of transfers and offsets.

The single cellar lies 18 inches above converging Metropolitan Transportation Authority (MTA) subway lines that trace diagonally across the site. As a result, it was necessary to transfer a portion of the shearwall which was located directly above the MTA lines using a series of transfer girders.

This load transfer resulted in a complex load path where the use of finite element modeling as well as strut and tie models provided a safe and efficient design for the numerous loading combinations. This modeling facilitated the design of the deep concrete beams (12- to 20-feet high) spanning across the MTA lines while picking up the remaining tower columns.

Credits

Owner:
The Moinian Group on Behalf of 900 Eighth Avenue Condominium LLC., New York, New York

Architect:
Frank Williams & Partners, New York, New York

Structural Engineer:
Rosenwasser/Grossman Consulting Engineers, P.C., New York, New York

Construction Manager:
HRH Construction LLC, White Plains, New York

Year:
2005