List of tenants in 7 World Trade Center (1987–2001)

The original 7 World Trade Center was a 47-story building, designed by Emery Roth & Sons, with a red granite facade. The building was 610 feet (190 m) tall, with a trapezoidal footprint that was 330 ft (100 m) long and 140 ft (43 m) wide. Tishman Realty & Construction managed construction of the building. The ground-breaking ceremony was hosted on October 2, 1984. The building opened in May 1987, becoming the seventh structure of the World Trade Center. It was destroyed in 2001 during the September 11 attacks, due to uncontrolled fires causing structural failure.[3]

7 World Trade Center
7 WTC from the South Tower observation deck, August 14, 1992.
Alternative names	Salomon Brothers Building
General information
Status	Destroyed
Location	Vesey Street, New York, NY, 10007, United States
Construction started	October 2, 1984[1]
Completed	1987
Opened	May 1987[2]
Destroyed	September 11, 2001
Height
Roof	610 ft (190 m)
Technical details
Floor count	47
Floor area	2,000,000 sq ft (190,000 m2)
Lifts/elevators	32
Design and construction
Architect	Emery Roth & Sons
Developer	Silverstein Properties
Structural engineer	Irwin Cantor

7 World Trade Center was 47 stories tall, clad in red granite masonry, and occupied a trapezoidal footprint. An elevated walkway spanning Vesey Street connected the building to the World Trade Center plaza. The building was situated above a Consolidated Edison power substation, which imposed unique structural design constraints. When the building opened in 1987, Silverstein had difficulties attracting tenants. Salomon Brothers signed a long-term lease in 1988 and became the anchor tenant of 7 WTC.

On September 11, 2001, the structure was substantially damaged by debris when the nearby North Tower of the World Trade Center collapsed. The debris ignited fires on multiple lower floors of the building, which continued to burn uncontrolled throughout the afternoon. The building's internal fire suppression system lacked water pressure to fight the fires. The collapse began when a critical internal column buckled and triggered cascading failure of nearby columns throughout, which was first visible from the exterior with the crumbling of a rooftop penthouse structure at 5:20:33 pm. This initiated progressive collapse of the entire building at 5:21:10 pm, according to FEMA,^: 23 while the 2008 NIST study placed the final collapse time at 5:20:52 pm.^{: 19, 21, 50–51} The collapse made 7 World Trade Center the first steel skyscraper known to have collapsed primarily due to uncontrolled fires.

A new 7 World Trade Center was built in 2002 and completed in 2006.