What was the square footage of the twin towers

The low and mid-rise sections on floors 7 through 44 provide a typical floor plate size of 36, sq ft in the shape of a parallelogram echoing the configuration of the site. These are served by three elevator banks with eight cars each. The high-rise section from floors 46 to 60 provides a floor plate size of 28, sq ft in the shape of a trapezoid, shaped and fluted to open toward the tip of Manhattan and triangulated from the lower floors to face the Freedom Tower.

These are served by two elevator banks with eight and six cars respectively. Both office floor plans contain a central core with a foot lease span on the west side facing the Memorial, foot span on the north and south and a foot span on the east side.

The tower will also include five levels of mechanical floors. Home Contact Us. General Project Plan. World Trade Center Towers.

Residential Growth. Waterfront Access. Regional Associate Announcement. June 19, Public Hearing. Opportunities for Business. Peck Slip Project. Battery Playscape. As of right now, the building is still due to rise, but the when will depend on snagging an anchor tenant for the skyscraper, which Silverstein Properties is still in the process of doing.

In the meantime, several murals have been added to the site where the building will eventually stand. A lot adjacent to the site has also been used for outdoor programming, including an outpost of the Brooklyn bazaar Smorgasburg, and live performances. Ten years after the official groundbreaking for 3 World Trade Center , the story tower finally opened in June The building is currently around 60 percent leased, with GroupM serving as its anchor tenant.

This story, foot-tall building encompasses 2. It opened in November of , and was the first building in the historic acre WTC complex to debut. Five years after it opened, the building is fully leased, with Spotify becoming the latest big tech company to make the move to the complex.

One of the final unfinished pieces of the World Trade Center site is finally on the road to wrapping up : Earlier this year, the Lower Manhattan Development Corporation and the Port Authority issued a request for proposals RFP for the site, which has been stalled since the former Deutsche Bank building was torn down in According to the RFP, a developer could building more than 1 million square feet, which could be used for commercial space offices, a hotel, convention center, and the like or as a residential building.

In either case, a new structure could rise up to feet. The official memorial to the victims of the September 11 attacks debuted in two parts. The memorial itself, a large open-air plaza, opened on September 11, Market research indicated that the city would benefit more by modernizing its ports, however, and the plan was soon scrapped. The grandson of Standard Oil founder John D. Rockefeller , David decided to revive the World Trade Center concept as the core of a revitalized lower Manhattan.

For the resources and power to make the project work, Rockefeller turned to the Port of New York Authority. The Port Authority had been chartered in by New York and New Jersey to build and operate all transportation terminals and facilities within a mile radius of the Statue of Liberty. After a bitter legal battle with representatives of the Radio Row merchants, the Port Authority won the right to continue its plan.

Instead of the traditional stacked glass-and-steel box construction of many New York skyscrapers, Yamasaki worked with structural engineers to come up with a revolutionary design: two hollow tubes, supported by closely spaced steel columns encased in aluminum. Floor trusses connected this exterior steel lattice to the central steel core of the building.

Wien even ran an ad in the New York Times in May predicting that a commercial airliner was likely to fly into the towers. Plans had already been made to guard against such an accident—which had happened in July with a smaller plane at the Empire State—and the towers were designed to be safe in a collision with a fully loaded plane the largest existing plane at the time. It was assumed such a plane would have to be lost in fog for such an event to occur; a terrorist attack was never envisioned.

View of the World Trade Center under construction, with a sign announcing the completion schedule, circa Because the ground in lower Manhattan was largely landfill, engineers would have to dig down 70 feet to reach bedrock. Excavating machines dug a three-foot-wide trench down to the bedrock, and as dirt and rock were removed, they were replaced by slurry: a mixture of water and bentonite, a type of clay that expands when wet to plug any hole along the side of the trench.

Workers then lowered a ton, seven-story-high steel cage into the trench and filled it with concrete by using a long pipe. As the concrete flowed in, it displaced the bentonite slurry. By making more than of these slurry trench segments, workers enclosed an area two blocks wide and four blocks long. All in all, one million cubic yards of landfill had to be removed. At the end of construction, these cranes had to be disassembled and brought down by elevator. When the towers were finished, each one would have 97 passenger elevators, capable of carrying loads of up to 10, pounds at speeds of up to 1, feet per minute.

In all, the towers were assembled from more than , pieces of steel manufactured around the country, 3, miles of electrical wiring, , cubic yards of concrete, 40, doors, 43, windows and six acres of marble. Construction went on until April , when the five-acre outdoor plaza, dominated by a foot-tall bronze sculpture by Fritz Koenig, was completed.

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