New York, NY
7 World Trade Center
Scope/Solutions
Falling debris from the collapse of the World Trade Center towers (WTC 1 and 2) damaged the building at 7 World Trade Center (WTC 7) and ignited fires. After several hours of fire exposure, WTC 7 also collapsed. SGH analyzed the fire environment in WTC 7 and the building’s thermal and structural response.
The primary objective of our computer modeling was to determine the steel temperature distribution and structural response of WTC 7’s northeastern section due to the fires that burned within the building.
Highlights of our computer modeling include the following:
- Modeled WTC 7’s northeast structural system, representing Floors 8 to 45
- Developed fire dynamics models to determine the heating environments, thermal models to determine the heat transfer to the structure, and structural models to determine the structural response
- Accounted for temperature-dependent properties of the structural members and connections, including thermal expansion, stiffness and strength degradation, and the failure modes of various connections
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Project Summary
2008
Completion Date
Solutions
Failure Investigation
Services
Structures | Advanced Analysis | Performance & Code Consulting
Markets
Commercial
Client(s)
Clifford Law Offices
Specialized Capabilities
Computational Mechanics | Fire Life Safety & Accessibility
Additional Projects
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Watermark Kendall East at 250 Kendall Street
Watermark Kendall East brings an additional 144 apartments to a new residential complex, which also includes a 321-unit tower and parking structure constructed in an earlier phase. SGH consulted on the building enclosure.
Northeast
350 Water Street
Cambridge Crossing is a forty-three-acre, mixed-use development adjacent to Kendall Square and served by the new MBTA Green Line extension. The new building on Parcel G at 350 Water Street houses twelve levels for life science office and laboratory space.