Cold-Formed Steel Buildings

Tectonic performed structural design of cold-formed steel framing for several multi-story residential buildings. The construction of the residential buildings throughout NYC ranged from 5-7 stories and from 7,000 sq. ft. to 70,000 sq. ft. Cold-formed was utilized for a faster installation schedule, therefore the cold-formed wall panels were built in shop and brought to the site assembled. This included design of the superstructures which consisted of cold-formed steel joist floor and roof systems, supported by cold-formed steel framed bearing walls and shear walls above the foundation or ground floor. Inspections of the cold-formed walls and joists were performed to meet DOB and contract documents.

National 9/11 Memorial Reflecting Pool Parapets

This project included the structural design of the Bronze Name Parapets for the September 11th Memorial at the World Trade Center site in NYC. The Bronze Name Parapets are carved with the names of 2,983 victims from September 11, 2001 as well as World Trade Center bombings of 1993. The Bronze Parapets outline the former footprints of the North and South Towers along the edges of the North and South waterfalls. Tectonic provided specialized structural design services pertaining to the National September 11 Memorial at the World Trade Center. Tectonic was directly involved in the design of the monument’s structural system, mock-up design and the development of the construction documents as well as advising the fabricator on related technical and installation issues.

MTA East Side Access Conveyor System

East Side Access, a $7 billion MTA project underway in NYC, will connect the Long Island Rail Road’s (LIRR) Main and Port Washington lines in Queens to a new LIRR terminal beneath Grand Central Terminal in Manhattan. The new connection will increase the LIRR’s capacity into Manhattan, shorten travel time for commuters, and provide a new commuter rail station in Sunnyside, Queens and under the Grand Central Terminal.  To support the new connection, Tectonic provided structural engineering and special inspection services on a multi-year contract for various phases including the Manhattan Tunnel, Harold Interlocking Structures and Grand Central Station. Construction design support services included structural and geotechnical design of temporary facilities including preparation of footing design plans for conveyor system to disposal of tunnel muck that included an enclosed steel truss spanning 120 ft. across Northern Boulevard.