1 World Trade Center (1971–2001) Explained

1 World Trade Center
Status:Destroyed
Location:West Street, New York, New York, United States
Highest Prev:Empire State Building
Highest Next:Willis Tower
Highest Start:1970
Highest End:1973
Start Date:August 6, 1968
Completion Date:1972
Inauguration Date:April 4, 1973
Destruction Date:September 11, 2001, 10:28 AM Eastern Time Zone[1]
Owner:Port Authority of New York and New Jersey
Floor Area:4759040square feet
Floor Count:110
References:[2] [3]
Antenna Spire:1728feet
Roof:1368feet
Elevator Count:99
Structural Engineer:Leslie E. Robertson (Worthington, Skilling, Helle, and Jackson)
Opened:December 15, 1970
Topped Out Date:December 23, 1970
Management:Silverstein Properties

The original One World Trade Center (also known as the North Tower, Tower 1, Building One, or 1 WTC) was one of the Twin Towers of the original World Trade Center complex in New York City. It was completed in 1972, stood at a height of 1368feet, and was the tallest building in the world until 1973, when surpassed by the Willis Tower in Chicago.

It was distinguishable from its twin, the original 2 World Trade Center, also known as the South Tower, by the 360feet telecommunications antenna on its roof. Including the antenna, the building stood at a total height of 1728feet. Other things that made the North Tower distinguishable from its twin was a canopy connected to the North Tower's west facade on street level as well as two pedestrian walkways that extended from the west and south promenades of Three and Six World Trade Center to the North Tower's north and south facades on plaza level, all of which the South Tower lacked. The building's address was 1 World Trade Center, and the WTC complex had its own ZIP code (10048) due to its large size.

The original World Trade Center was destroyed in the terrorist attacks of September 11, 2001. Struck by American Airlines Flight 11 at 8:46 a.m., the North Tower was the first of the Twin Towers to be hit by a hijacked aircraft, and the second to collapse, at 10:28 a.m. The North Tower stood for 102 minutes after the aircraft impact. Of the 2,977 victims killed in the attacks, around 1,700 were in the North Tower or on the ground.

The North Tower was succeeded by the present-day One World Trade Center tower, which was opened in November 2014 as the lead building of the redeveloped World Trade Center site.[4] [5] At the National September 11 Memorial & Museum, the northern pool marks the spot where the North Tower once stood.

History

Development

In 1961, the Port Authority of New York and New Jersey agreed to build the World Trade Center on the site of the Hudson Terminal in Lower Manhattan, New York City.[6] On, 1962, the Port Authority announced the selection of Minoru Yamasaki as lead architect and Emery Roth & Sons as associate architects. Yamasaki devised the plan to incorporate twin towers. His original plan called for the towers to be 80 stories tall,[7] but to meet the Port Authority's requirement for 10000000square feet of office space, the buildings would each have to be 110 stories tall. Yamasaki's design for the World Trade Center, unveiled to the public on, 1964, called for a square plan approximately 208feet in dimension on each side.

In March 1965, the Port Authority began acquiring property at the World Trade Center site.[8] Demolition work began on, 1966, and groundbreaking for the construction of the World Trade Center took place on, 1966. In January 1967, the Port Authority awarded $74 million in contracts to various steel suppliers.[9] Construction work began on the North Tower in .[10] The topping out ceremony for 1 WTC (the North Tower) took place on, 1970.[10] The first tenants moved into the North Tower on, while it was still under construction,[11] [12] and a ribbon cutting ceremony took place on, 1973.

Operation

On February 13, 1975, a three-alarm fire broke out on the North Tower's 11th floor, spreading to the 9th and 14th floors. At that time, the World Trade Center had no fire sprinkler systems.[13] A disgruntled custodian was discovered to have deliberately started the fire and was criminally charged.[14] [15] Following the fire, in 1981, the Port Authority announced a $45 million plan to install sprinklers throughout the World Trade Center.[16]

The first terrorist attack on the World Trade Center occurred on February 26, 1993, at 12:17 p.m. A Ryder truck filled with of explosives (planted by Ramzi Yousef) detonated in the North Tower's underground garage.[17] According to a presiding judge, the conspirators' chief aim at the time of the attack was to destabilize the North Tower and send it crashing into the South Tower, toppling both skyscrapers.[18] Six people were killed and 1,042 others were injured in the attacks.[19] [20] Following the bombing, floors that were blown out needed to be repaired to restore structural support.[21]

In February 2001, the Port Authority leased the entire World Trade Center complex to Vornado Realty Trust.[22] However, Vornado insisted on last minute changes to the deal,[23] and the next-highest bidder, Silverstein Properties, signed a lease for the complex on, 2001.[24]

Destruction

See main article: September 11 attacks.

See also: Casualties of the September 11 attacks. At 8:46 a.m. (EDT) on September 11, 2001, five hijackers affiliated with al-Qaeda crashed American Airlines Flight 11 into the northern facade of the North Tower between the 93rd and 99th floors.[25] [26] Seventeen minutes later, at 9:03 a.m. (EDT), a second group of five terrorists crashed the hijacked United Airlines Flight 175 into the southern facade of the South Tower, striking between the 77th and 85th floors.[27]

By 9:59 a.m. (EDT), the South Tower collapsed after burning for approximately 56 minutes. After burning for 102 minutes, the North Tower collapsed due to structural failure at 10:28 a.m. (EDT).[28] When the North Tower collapsed, debris fell on the nearby 7 World Trade Center, damaging it and starting fires. The fires burned for hours, compromising the building's structural integrity. Seven World Trade Center collapsed at 5:21 p.m. (EDT).[29] [30]

Together with a simultaneous attack on the Pentagon in Arlington, Virginia, and a passenger revolt that resulted in a plane crash in Shanksville, Pennsylvania, the attacks resulted in the deaths of 2,996 people (2,507 civilians, 343 firefighters, 72 law enforcement officers, 55 military personnel, and the 19 hijackers).[31] [32] [33] More than 90% of the workers and visitors who died in the towers had been at or above the points of impact.[34] In the North Tower, 1,355 people at or above the point of impact were trapped, and died of smoke inhalation, fell, jumped from the tower to escape the smoke and flames, or were killed when the building eventually collapsed. One stairwell in the South Tower, Stairwell A, somehow avoided complete destruction, unlike the rest of the building.[35] When Flight 11 hit, all three staircases in the North Tower's impact zone were destroyed, making it impossible for anyone above the 91st floor to escape. 107 people below the point of impact also died.

Architecture

Minoru Yamasaki was the lead architect for the tower, and Emery Roth & Sons were the associate architects.[36] During the World Trade Center's construction, the structural engineers ended up following draft versions of New York City's 1968 building codes, which incorporated "advanced techniques" in building design. The Twin Towers used a tube-frame design, which required 40 percent less structural steel than conventional building designs.[37] The structures were inspired by the architectural ethic of Le Corbusier and was the seminal expression of Yamasaki's gothic modernist tendencies. Yamasaki was also inspired by Islamic architecture, elements of which he incorporated in the buildings' design, having previously designed Saudi Arabia's Dhahran International Airport with the Saudi Binladin Group.[38] [39]

When completed, the North Tower stood 1368feet tall.[40] It featured a 362foot telecommunications antenna or mast that was built on the roof in 1979 (upgraded in 1999 to accommodate DTV broadcasts). With this addition, the highest point of the North Tower reached 1730feet.[41] Each tower stood over 1350feet high, and occupied about 1acres of the total 16acres of the site's land.[42]

Facade

The Twin Towers' facades were made of high-strength, load-bearing perimeter steel columns which acted as Vierendeel trusses.[43] Although the columns themselves were lightweight, they were spaced closely together, forming a strong, rigid wall structure. There were 59 perimeter columns, narrowly spaced, on each side of the building. In all, the perimeter walls measured 210feet long on each side, and the corners were beveled. The perimeter structure was constructed of prefabricated modular pieces connected by spandrel plates. From the 7th floor to the ground level, and down to the foundation, the columns were spaced 10feet apart to accommodate doorways. All columns were placed on bedrock 65–85 feet (20–26 m) below the surface.[44]

Structural features

The building's core housed the elevator and utility shafts, restrooms, three stairwells, and other support spaces. The core of each tower was a rectangular area 87 by 135 feet (27 by 41 m), and contained 47 steel columns running from the bedrock to the top of the tower. The North Tower's structural core was oriented with the long axis east to west. The core columns supported about half the towers' weight.[45] All elevators were located in the core. Each building had three stairwells, also in the core, except on the mechanical floors. The large, column-free space between the perimeter and core was bridged by prefabricated floor trusses, which connected to the perimeter columns.

Hat trusses (or "outrigger truss") located from the 107th floor to the top of the North and South towers were designed to support a tall communication antenna on top of each building. Only the North Tower actually had an antenna fitted, which was added in 1978.[46] The framed-tube design using steel core and perimeter columns protected with sprayed-on fire resistant material created a relatively lightweight structure that would sway more in response to the wind. In designing the World Trade Center, Leslie Robertson considered the scenario of the impact of a jet airliner crashing into the building.[47] The National Institute of Standards and Technology (NIST) found a three-page white paper that mentioned another aircraft impact analysis, involving impact of a jet at 600mi/h, was indeed considered, but NIST could not locate the documentary evidence of the aircraft impact analysis.[48]

Sprayed-fire resistant materials (SFRMs), gypsum wallboard, and vermiculite were used to provide fireproofing to the interiors. More fireproofing was added after a fire in February 1975,[49] but after the 1993 bombing, inspections found fireproofing to be deficient.[50] The 1968 New York City building codes did not require sprinklers for high-rise buildings, except for underground spaces, but the entire complex was retrofitted by 2001.

Tenants at the time of the attacks

The tenant list below was compiled from the original list provided by CoStar Group (a provider of electronic commercial real estate information), quoted by CNN,[51] and was sourced from UnBlinking.com.[52] Cantor Fitzgerald's corporate headquarters were located in 1 World Trade Center.[53]

Note: Floor numbers in

 red  were part of American Airlines Flight 11's impact area on September 11, 2001, with floors trapped by its impact numbered in  dark gray .
Fl# Companies
RChannel 2 (WCBS), Channel 4 (WNBC), Channel 5 (WNYW), Channel 7 (WABC), Channel 9 (WWOR), Channel 11 (WPIX), Channel 13 (WNET), Channel 31 (WPXN), Channel 47 (WNJU), WKCR-FM, WPAT-FM, WNYC-FM, WKTU-FM, CNBC, Genuity, CNN
109Mechanical floor
108Mechanical floor
107Windows on the World, Greatest Bar on Earth, Wild Blue
106Windows on the World, Windows on the World Wine School, Windows on the World Conference and Banquet rooms
105Cantor Fitzgerald, eSpeed, Genuity
104Cantor Fitzgerald, eSpeed, Channel 4 (WNBC), UmeVoice
103Cantor Fitzgerald, eSpeed
102Cantor Fitzgerald, Alliance Consulting Group, The Nishi-Nippon Bank Limited, PaineWebber, Kidder Peabody & Co.
101Cantor Fitzgerald, eSpeed, Boomer Esiason Foundation, Chances for Children (charity), Kidder Peabody & Co.
100Marsh & McLennan Companies
99Marsh & McLennan Companies
98Marsh & McLennan Companies
97Marsh & McLennan Companies
96Marsh & McLennan Companies, Sumitomo Mitsui Banking Corporation
95Marsh & McLennan Companies
94Marsh & McLennan Companies, Marsh Private Client Services, Guy Carpenter
93Marsh & McLennan Companies, Fred Alger Management, Castle Convertible Fund Inc.
92Carr Futures, Lower Manhattan Cultural Council, LMCC Art Program, LMCC Open Studios
91American Bureau of Shipping, Cedel Bank International, Meyers Pollok Robbins, New Japan Securities International, Lower Manhattan Cultural Council, LMCC Art Program, LMCC Open Studios, Shiga Bank
90American TCC International Group, Chugoku Bank, Dun & Bradstreet, Clearstream International, Pass Consulting Corporation
89Barcley Dwyer, Bayview Services LLC, CIIC Group (US), Cosmos Services America, Daehan International, Drinker Biddle & Reath, MetLife, Mutual International Forwarding, Strategic Communications Group, Wai Gao Qiao USA, Wall Street Planning Association, Banco LatinoAmericano de Exportaciones Sud America, Italian Wine & Food Institute, Jun He Law Offices, Majestic Star Yacht Chartering, Tokyo Securities Company
88Julien J. Studley, Viking Sea Freight, WTC Construction Manager
87May Davis Group, Bank of Kinki, Okasan Securities, Thor Technologies
86Julien J. Studley, Asiatic Chemical, Society of Satellite Professionals International
85SMW Trading Corporation, Thermo Electron, Chicago Investment Group, Hyakugo Bank, Ohrenstein & Brown
84Bright China Capital, David Peterson Law Offices, LG Securities America (Later merged separately to NH Investment & Securities and KB securities), San-In Godo International Bank, Unicom Capital Advisors, Blue Star Line North America, Daehan International
83Axcelera, General Telecommunications, eMeritus Communications, Lava Trading LLC, Network Plus, Global Crossings Holdings, Ameson Education and Culture Exchange Foundation, Taipei Bank, Toho Bank, Wako Securities America
82New York Metropolitan Transportation Council, DMJM Harris
81Bank of America, Blue Star Line North America, Network Plus, New Continental Enterprises
80Agricor Commodities Corporation, Intrust Investment Realty, Noga Commodities Overseas, Noga Hotels New York, Shizuoka Bank, RLI Insurance Company, Bank of Yokohama, Zenshinren Bank, TheBeast.com
79Daynard & Van Thunen Company, First Liberty Investment Group, Nikko Securities, Okato Shoji Company International, Securant Technologies, Iyo Bank, Symphoni Interactive LLC
78Skylobby, Avenir, Baltic Oil Corporation, Cedar Capital Management Associates, Cheng Cheng Enterprises Holdings, Geiger & Geiger, Hyundai Motor Company(then with Hyundai Securities), International Trade Centre, Korea Local Authorities Foundation for International Relations, Meridian Ventures Holdings, Pacrim Trading & Shipping, Phink Path, Traders Access Center, Atinav Avenue, Korea Local Government Center, Partner Reinsurance Company, Thai Farmers Bank, Verona Fair Organization US Representative
77Hal Roth Agency, Jun He Law Offices, Martin Progressive LLC, New-ey International Corporation, World Trade Centers Association, Alliance Continuing Care Network, Kuhne & Nagel, Partner Reinsurance Company
76Mechanical floor
75Mechanical floor
74Morgan Stanley
73Port Authority of New York & New Jersey, Morgan Stanley
72Morgan Stanley
71Morgan Stanley
70Morgan Stanley
69Morgan Stanley
68Morgan Stanley
67World Trade Institute, Port Authority of New York & New Jersey
66Port Authority of New York & New Jersey
65Boeing Aviation Technical Services, Morgan Stanley
64Port Authority of New York & New Jersey, Morgan Stanley
63Morgan Stanley, Airport Access Program
62Morgan Stanley
61Morgan Stanley
60Asahi Bank, Morgan Stanley
59Sidley Austin Brown & Wood, Morgan Stanley
58Sidley Austin Brown & Wood
57Sidley Austin Brown & Wood
56Sidley Austin Brown & Wood
55Pace University, World Trade Institute of Pace University, Benchmark Hospitality at Pace University (now Downtown Conference Center at Pace University)
54Sidley Austin Brown & Wood
53AIG Aviation Brokerage, Bank of Taiwan, Bramax Manufacturing Corporation, China Resource Products USA, Keenan, Powers, & Andrews, LoCurto & Funk Inc., National Nydegger Transport Corporation, Pacrim Trading & Shipping, Pure Energy Corporation, Broadview Networks, French Embassy Financial Services, JACOM Corporation, TripleHop Technologies
52Gayer, Shyu & Wiesel, Hill, Betts & Nash, Howly (US) Corporation, Leeds & Morrelli, Okasan Securities, RGL Gallagher PC, Williams Capital Group, Bramax Manufacturing Corporation, Temenos USA Wholesalers, Unifacemanu International
51AT&T Corporation, C&P Press, Chilean Government Trade Bureau, Chilean National Petroleum Company, Chilean Production Promotion Center, Chilean Trading Corporation, Tradeweb
50Ready Biz Group, Medical Access, 212 Management Corp
49Dai-Ichi Kangyo Trust Company of New York, Dai-Ichi Kangyo Bank, Overseas Union Bank, Pacific American Corporation
48Dai-Ichi Kangyo Trust Company of New York, Dai-Ichi Kangyo Bank
47ADERLY-USA, Adjusters International, American TCC International Group, Inc., ClearForest Corporation, First Union Securities, G.Z. Stephens, Inc., Pacific American Corporation, Quint Amasis LLC, Rollins Accounting, Tejas Securities Group, Inc., W.J. Export Import, Inc.
46Alegra International, American Sino Trade Development Council, ASTDC, Auspic International Technology & Trade Group Co., Inc., Auto Imperial, Bank of Yokohama, Beyondbond, Inc., Bluesky Technologies Inc., Ceylon Shipping Corporation, Charles P. Chan, CPA, China U.S. Net Group, Inc., Consolidated Steelex Corporation, Dahao U.S.A. Corporation, China Inter-Ocean Transportation, Hitachi Software Engineering America Limited, Interglobe Communications, J&X Tan's Trading Co., Johnson & Johnson, Kading Companies S.A., KISCO Corporation (USA), Port Authority of New York & New Jersey, R.S. Property, Shandong Resources Inc., Shipping Services Italia, Sinopec USA, Inc., Smartcomm Group, Inc., Sri Larkan Travel, Inc., Strategic Alliance International Group, Suggested Open Systems, Suntendy America, Inc., T&T Enterprises International, Inc., Teleport Investment Management LLC, Thomas D. Mangione Limited, Tradeway, Inc., ViewTrade Group, World Imperial Realty Corporation, World News & Media Group, Inc., Yong Ren America Inc.
45American Lota International, Bramax Manufacturing Corporation, China Construction America, Dunavant Commodity Corporation, Fertitta Enterprises, F.E. Wallace & Co., HS Futures LP, Hyundai Motor Company, Pure Energy Corporation, Security Traders Association, Software Research Associates America, Streamline Capital, BAO Hercules, Ching Fong Investment Company New York, Johnson Enterprises, SRA America, S. Stern Custom Brokers, Swiss Trading & Shipping Association
44Skylobby, Skydive restaurant, MetLife, Morgan Stanley, New York Society of Security Analysts, Market Technicians Association, Port Authority of New York & New Jersey
43Port Authority of New York & New Jersey
42Mechanical floor
41Mechanical floor
40Lehman Brothers, Commerzbank Capital Markets AG
39Lehman Brothers, Cultural Institutions Retirement Systems, First Liberty Investment Group, Overseas Union Bank, Xcel Federal Credit Union, Tai Fook Securities, Circle International, Sun Hung Kai Securities
38Lehman Brothers, Regional Alliance for Small Contractors, Turner Construction Company, GSW & Associates, GW Finance Corporation
37Commodity Futures Trading Commission, Government of Thailand, S. Stern Custom Brokers, Thai Board of Investment, Thai Office of the Economic Counselor, Thai Trade Center, Port Authority of New York & New Jersey
36Kemper Corporation
35Kemper Corporation, Anne Pope Law Offices
34Royal Thai Embassy Office, Port Authority of New York & New Jersey, Tourism Authority of Thailand
33Berel & Mullen, China Daily Distribution Corporation, Data Transmission Network Corporation, Hu Tong International Company, Koudis International, MANAA Trading Group, MIS Service Company, Rachel & Associates, Serko & Simon, Golden King USA, American Bright Signs, China United Trading Corporation, Excel Shipping, Korean Associates Securities, Rohde & Liesenfeld, Lunham & Reeve, Inc.,
32Chang Hwa Bank, Rohde & Liesenfeld, Koudis International
31Port Authority of New York & New Jersey, Empire Health Choice, EmpireBlue
30Empire Health Choise, EmpireBlue
29China Patent and Trademark Agent USA, World Travel, Seth Shipping Corporation, Taipei Bank, ZimAmerican Israeli Shipping Company
28Port Authority of New York & New Jersey, Empire Health Choice, EmpireBlue
27Bangkok Metropolitan Bank, Anthem, Empire Health Choice, EmpireBlue, Sinopec USA, Inc.
26Garban Intercapital
25Garban Intercapital, R.H. Wrightson & Associates, Cote d'Ivore Embassy Commercial Counselor, EXCO USA International, Harold I. Pepper Company
24Empire Health Choice, EmpireBlue, Port Authority of New York & New Jersey, Dominican Republic Export Promotion Center, Electric Paper Inc., RN Forwarding
23Empire Health Choice, EmpireBlue
22Security Command Center, Cheng Xiang Trading USA, Chicago Board Options Exchange Corporation, G.C. Services, Gold Sky Inc., Kaiser Overseas, Karoon Capital Management, MLU Investment, Pluto Commodities, P. Wolfe Investments, Tai Fook Securities, The SCPIE Companies, Unicom Capital Advisors, AMROC International Company, Central Trust of China, China Steel, New York Metropolitan Transportation Council, SySoft e-Business Lab
21Avesta Computer Services, Continental Logistics, Dongwon Securities Company(then part of Dongwon Industries), Friends Ivory & Sime, Friends Villas Fischer Trust, Infotech Commercial Systems, Law Offices of Roman V. Popik, Lief International, Tower Computer Services, United Seamen's Service (USS-AMMLA), 1 Stop Investment Advice, Brauner International Corporation, Cat Technology Inc., Wired Cat, J.D. Smith Customs Broker, Marc Commodities, Regional Alliance for Small Contractors, United Hercules
20Empire Health Choice, EmpireBlue, Rohde & Liesenfeld
19Port Authority of New York and New Jersey, Adams McFarlane LLC (NexxtHealth), Excel Shipping, HZ Bernstein Air Freight, Empire Health Choice, EmpireBlue
18Neovest, I/B/E/S International Inc., SportsGelt LLC
17ABC International, Masterpiece International, Nippon Express USA, Empire Health Choice, EmpireBlue, ZimAmerican Israeli Shipping Company
16California Bank & Trust, Seven Star Lines, ZimAmerican Israeli Shipping Company, Ramon International Insurance Brokers (ZimAmerican)
15Landmark Education Corporation, Continental Forwarding, Gringsby Brandford & Co., H.W. Robinson & Co.
14Instinet, Dun & Bradstreet, Port Authority of New York & New Jersey, Aeolian Shipping Company, C. Allen & Co., Hirshbach & Smith, VanderGrift Forwarding
13Instinet
12Bank of America, Lafayette Shipping Company, Instinet
11Bank of America, Porcella Vicini & Co., Primark Decision Economics, Raymond James & Associates, Allstate Insurance Company, Tes USA
10Bank of America, Export Import Service, Hauser Air Corporation
9Bank of America, Foreign Credit Insurance Association
8Mechanical floor
7Mechanical floor
6
5Gayer, Shyu & Wiesel
4Geiger & Geiger
3Port Authority of New York & New Jersey, LG Insurance Company, W.R. Hambrecht
2
PAvis, Delta Air Lines, Olympia Airport Express, Trans World Airlines, Continental Airlines, Continental Enterprises, Citibank
CThe Mall at the World Trade Center
SOURCES: CoStar Group, CNN, and Unblinking.Floor unknown: Alliance Global Finance, Associated Charter Marine, Carreden Group, CIF Agency, Dimetol International Trade, Eastern Capital Corporation, Falcon International Freight, First Pacific Rim, GAC Shipping, Garwood Financial, Globe Shipping Company, GSI Cargo Service, Hachijuni Bank, Hanil Securities, Lin Brothers International, Pluto Commodities, Port Newark

92nd floor

The 92nd floor, though technically the first floor below Flight 11's impact zone, did not have any survivors.[54] Sixty-nine people reported to work that morning, including 67 employees of Carr Futures, a tenant on the 92nd floor. The impact itself spared every single person on Floor 92 and did no damage to the floor directly. However, the force of the crash collapsed walls and inflicted nonstructural damage such as smashed windows,[55] broken ceiling tiles and severed electrical wires, as well as causing knee-deep flooding throughout various rooms on the 92nd floor after the water pipes burst. Multiple calls were recorded from people trapped on the floor, the workers reporting that although the stairs on the 92nd floor had not been destroyed, they were walled off by fallen debris from Flight 11's impact zone immediately above.[56] In addition to the stairs being rendered impassable, the centralized impact into the North Tower's core also interrupted elevator service in the skyscraper from its 50th floor and higher, severing all escape routes for anyone above the 91st floor.[57]

Initially, conditions on the 92nd floor were likely not dissimilar to what they were on the 91st, from which everyone survived and escaped.[58] The situation changed very quickly when flammable aviation fuel spilled down into the 92nd floor, igniting fires that rapidly began consuming its east side; within 12 minutes of the impact, the first known fatalities from the floor occurred over a three-minute period when eight workers were forced to jump from the northern end of the tower's east side to escape a rapidly advancing wall of flames.[59] Those who remained made their way to an unoccupied area on the west side of the floor that was initially free of smoke and fire. However, images show that the blaze on the tower’s north face eventually spread westward to their safe haven in that section of the floor, making conditions there unsurvivable.[60]

The last phone call from the North Tower came from Thomas McGinnis, a trader on the 92nd floor, when he got through to his wife Iliana at 10:18. McGinnis and a number of others had been confined to a conference room the entire time after the door jammed shut from the building buckling as the plane hit, separating them from everyone else on the floor. Most of the floor was engulfed in flames by the time McGinnis called, with extremely limited space for the group to avoid being burned.[61] Despite his wife's attempts to reassure him, McGinnis did not believe they would survive. The South Tower had already collapsed, and McGinnis revealed to her that he could see people jumping from the floors above. The line went dead at 10:26, two minutes before the tower collapsed.[56]

Tenants that left prior to the attacks

Between 1978 and 1995, the Consulate of Paraguay was located in Suite 1609 of 1 World Trade Center.[62] [63] Home Lines once occupied Suite 3969 from 1974[64] until 1988.[65]

References

Sources

External links

(North Tower) (North Tower) (North Tower)

Notes and References

  1. Web site: 9/11/01 timeline: How the September 11, 2001 attacks unfolded. WPVI-TV. en-US. live. September 11, 2023. November 4, 2023. November 5, 2023. https://archive.today/20231105012442/https://6abc.com/what-happened-on-911-september-11-remembrance-timeline-facts-about-911/6411796/.
  2. News: The World Trade Center: A Timeline . The New York Times Magazine . 2004 . September 11, 2015 . September 19, 2015 . https://web.archive.org/web/20150919212924/http://www.nytimes.com/ref/magazine/08wtc-timeline.html?_r=0 . live .
  3. Web site: History of the Twin Towers. PANYNJ.gov. 2013. September 11, 2015. https://web.archive.org/web/20150913203625/http://www.panynj.gov/wtcprogress/history-twin-towers.html. September 13, 2015.
  4. http://www.panynj.gov/wtcprogress/index.html World Trade Center
  5. http://lowermanhattan.info/construction/project_updates/freedom_tower_26204.aspx One World Trade Center construction updates
  6. News: Grutzner . Charles . December 29, 1961 . Port Unit Backs Linking of H&M and Other Lines . The New York Times . en-US . 0362-4331.
  7. News: Huxtable . Ada Louise . Ada Louise Huxtable . January 19, 1964 . A New Era Heralded . The New York Times . en-US . 0362-4331.
  8. News: Ingraham . Joseph C. . March 29, 1965 . Port Agency Buys Downtown Tract . The New York Times . en-US . 0362-4331.
  9. News: January 24, 1967 . Contracts Totaling $74,079,000 Awarded for the Trade Center . The New York Times . en-US . 0362-4331.
  10. Web site: Timeline: World Trade Center chronology . live . https://web.archive.org/web/20070502225357/http://www.pbs.org/wgbh/amex/newyork/timeline/index.html . May 2, 2007 . May 15, 2007 . PBS – American Experience.
  11. Book: Lew . H. S. . Design, Construction, and Maintenance of Structural and Life Safety Systems (NCSTAR 1-1) . Bukowski . Richard W. . Carino . Nicholas J. . September 2005 . National Institute of Standards and Technology . xxxvi.
  12. Web site: June 1, 2014 . History of the Twin Towers . live . https://web.archive.org/web/20131228040848/http://www.panynj.gov/wtcprogress/history-twin-towers.html . December 28, 2013 . August 17, 2015 . Port Authority of New York and New Jersey.
  13. News: February 14, 1975 . Trade Center Hit by 6-Floor Fire . live . https://web.archive.org/web/20080512074050/http://www.nytimes.com/1975/02/14/nyregion/14WTC.html . May 12, 2008 . August 19, 2020 . The New York Times . en-US . 0362-4331.
  14. Web site: Treaster . Joseph B. . 1975-05-21 . Suspect, 19, Is Charged With Trade Center Fires . August 11, 2024 . . 47.
  15. Web site: 2015-02-14 . Disgruntled custodian sets off fire in north tower of New York's World Trade Center 40 years ago this hour (Feb 13 1975) . August 11, 2024 . RetroNewser . en-US.
  16. News: Goodwin . Michael . March 13, 1981 . TRADE CENTER TO GET FIRE SPRINKLERS AT $45 MILLION COST . January 9, 2022 . The New York Times . 1 . en-US.
  17. Book: Reeve, Simon . The new jackals : Ramzi Yousef, Osama Bin Laden and the future of terrorism . . 2002 . 978-1-55553-509-4 . Boston . 10 . registration.
  18. News: August 5, 1997 . Prosecutor: Yousef aimed to topple Trade Center towers . live . https://web.archive.org/web/20081012085254/http://www.cnn.com/US/9708/05/wtc.trial/index.html . October 12, 2008 . November 20, 2008 . CNN.
  19. News: Mathews . Tom . March 8, 1993 . A Shaken City's Towering Inferno . live . https://web.archive.org/web/20081030073528/http://www.newsweek.com/id/111113 . October 30, 2008 . October 26, 2008 . Newsweek.
  20. News: Barbanel . Josh . February 27, 1993 . Tougher Code May Not Have Helped . November 20, 2008 . The New York Times . en-US . 0362-4331.
  21. Web site: Port Authority Risk Management Staff . The World Trade Center Complex . live . https://web.archive.org/web/20070928113151/http://www.interfire.org/res_file/pdf/Tr-076.pdf . September 28, 2007 . May 15, 2007 . United States Fire Administration.
  22. News: February 23, 2001 . Brookfield Loses Lease Bid . Toronto Star.
  23. News: Bagli . Charles V. . March 20, 2001 . As Trade Center Talks Stumble, No. 2 Bidder Gets Another Chance . dead . https://web.archive.org/web/20080119031151/http://query.nytimes.com/gst/fullpage.html?res=9A03E5DB113DF933A15750C0A9679C8B63&sec=&pagewanted=1a . January 19, 2008 . November 20, 2008 . The New York Times . en-US . 0362-4331.
  24. News: Smothers . Ronald . July 25, 2001 . Leasing of Trade Center May Help Transit Projects, Pataki Says . dead . https://web.archive.org/web/20080517112948/http://query.nytimes.com/gst/fullpage.html?res=9B06E0D91F3AF936A15754C0A9679C8B63&sec=&spon= . May 17, 2008 . November 20, 2008 . The New York Times . en-US . 0362-4331.
  25. Web site: February 19, 2002 . Flight Path Study – American Airlines Flight 11 . live . https://web.archive.org/web/20070214030913/http://www.gwu.edu/~nsarchiv/NSAEBB/NSAEBB196/doc01.pdf . February 14, 2007 . April 24, 2014 . National Transportation Safety Board.
  26. Web site: February 19, 2002 . Flight Path Study – United Airlines Flight 175 . live . https://web.archive.org/web/20140617050241/http://www2.gwu.edu/~nsarchiv/NSAEBB/NSAEBB196/doc03.pdf . June 17, 2014 . April 24, 2014 . National Transportation Safety Board.
  27. Web site: 9/11 Commission Report . live . https://web.archive.org/web/20110903025127/http://www.9-11commission.gov/report/index.htm . September 3, 2011 . November 3, 2014 . The National Commission on Terrorist Attacks Upon the United States.
  28. News: Miller . Bill . May 1, 2002 . Skyscraper Protection Might Not Be Feasible, Federal Engineers Say . live . https://web.archive.org/web/20131203170242/http://articles.orlandosentinel.com/2002-05-01/news/0205010358_1_engineers-jet-fuel . December 3, 2013 . November 24, 2013 . Orlando Sentinel.
  29. World Trade Center Building Performance Study, Ch. 5 WTC 7 – section 5.5.4
  30. Final Report on the Collapse of World Trade Center Building 7, p. xxxvii.
  31. Web site: How much did the September 11 terrorist attack cost America? . live . https://web.archive.org/web/20181226080840/http://www.iags.org/costof911.html . December 26, 2018 . April 30, 2014 . 2004 . Institute for the Analysis of Global Security.
  32. News: September 9, 2011 . Winnipegger heads to NY for 9/11 memorial . live . https://web.archive.org/web/20131113021016/http://www.cbc.ca/news/canada/manitoba/winnipegger-heads-to-ny-for-9-11-memorial-1.991431 . November 13, 2013 . November 13, 2013 . CBC News . A total of 2,996 people died: 19 hijackers and 2,977 victims..
  33. News: Stone . Andrea . August 20, 2002 . Military's aid and comfort ease 9/11 survivors' burden . live . https://web.archive.org/web/20120627082049/http://www.usatoday.com/news/sept11/2002-08-20-pentagon_x.htm . June 27, 2012 . September 2, 2011 . USA Today.
  34. Sunder (2005), p. 48.
  35. News: Westfeldt, Amy . March 23, 2007 . Debate over staircase slows WTC project . dead . https://web.archive.org/web/20140506020125/http://web.timesunion.com/AspStories/story.asp?category=SEP11&storyID=574510&BCCode=&newsdate=3%2F23%2F2007 . May 6, 2014 . May 4, 2014 . Times Union . Associated Press.
  36. News: Architect Named for Trade Center . Esterow . Milton . September 21, 1962 . The New York Times . en-US . 0362-4331.
  37. American Iron and Steel Institute . 1964 . The World Trade Center – New York City . Contemporary Steel Design . American Iron and Steel Institute . 1 . 4.
  38. Book: Grudin, Robert . Design And Truth . April 20, 2010 . . 978-0-300-16203-5 . 39 . April 18, 2019 . https://web.archive.org/web/20160527162624/https://books.google.com/books?id=KHFoCxkdiUIC&pg=PA39 . May 27, 2016 . live.
  39. Web site: Kerr . Laurie . December 28, 2001 . Bin Laden's special complaint with the World Trade Center. . live . https://web.archive.org/web/20150919030203/http://www.slate.com/articles/arts/culturebox/2001/12/the_mosque_to_commerce.html . September 19, 2015 . October 12, 2015 . Slate Magazine.
  40. Web site: The World Trade Center: Statistics and History . August 13, 2015. https://web.archive.org/web/20150916031526/http://w.skyscraper.org/TALLEST_TOWERS/t_wtc.htm. September 16, 2015. live.
  41. News: At Trade Center Deck, Views Are Lofty, as Are the Prices . McDowell . Edwin . April 11, 1997 . The New York Times . en-US . 0362-4331 . November 21, 2008 . https://web.archive.org/web/20080410152849/http://query.nytimes.com/gst/fullpage.html?res=9802EED7133CF932A25757C0A961958260 . April 10, 2008 . live.
  42. News: 1973: World Trade Center Is Dynamic Duo of Height . https://web.archive.org/web/20020611065443/http://www.enr.com/new/A0816.asp . June 11, 2002 . Engineering News-Record . August 16, 1999.
  43. Book: William Baker . Johnathan Barnett . Christopher Marrion . Ronald Hamburger . James Milke . Harold Nelson. Chapter 2. WTC 1 and WTC 2 . World Trade Center Building Performance Study . . September 1, 2002. 33. ... the loads initially carried by the damaged exterior columns were transferred by Vierendeel truss action to the remaining exterior columns immediately adjacent to the impact area..
  44. World Trade Center "Bathtub": From Genesis to Armageddon . Bridges . Tamaro, George J. . Spring 2002 . 32 . 1 . dead . https://web.archive.org/web/20070930043409/http://www.nae.edu/nae/bridgecom.nsf/weblinks/CGOZ-58NLJ9?OpenDocument . September 30, 2007 .
  45. Zarghamee . Mehdi S. . Kitane . Y. . Erbay . Omer O. . McAllister . Therese P. . Gross . John L. . December 1, 2005 . Global Structural Analysis of the Response of the World Trade Center Towers to Impact Damage and Fire. Federal Building and Fire Safety Investigation of the World Trade Center Disaster (NIST NCSTAR 1-6D) . NIST . en . 285.
  46. Web site: New York: A Documentary Film – The Center of the World (Construction Footage) . Port Authority / PBS . May 16, 2007 . dead . https://web.archive.org/web/20070401224243/http://www.pbs.org/wgbh/amex/newyork/sfeature/sf_building.html . April 1, 2007 .
  47. Web site: Robertson . Leslie E. . 2002 . Reflections on the World Trade Center . The Bridge Volume 32, Number 1 . National Academy of Engineering . July 28, 2006.
  48. Sadek, Fahim. Baseline Structural Performance and Aircraft Impact Damage Analysis of the World Trade Center Towers(NCSTAR 1–2 appendix A). NIST 2005. pp. 305–307.
  49. Web site: Hamburger . Ronald . World Trade Center Building Performance Study . Federal Emergency Management Agency. July 27, 2006 . etal.
  50. . NIST lists upgraded floors as 92–100 and 102 plus 8 unspecified floors.
  51. News: List of World Trade Center tenants . CNN . May 8, 2010 . January 6, 2012 . https://web.archive.org/web/20120106160853/http://www.cnn.com/SPECIALS/2001/trade.center/tenants1.html . live .
  52. http://www.unblinking.com/arc/2001-09a.htm Updated list
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  54. Book: 9/11 Commission Report . Government Printing Office . 2004 . National Commission on Terrorist Attacks Upon the United States. 303.
  55. Book: National Institute of Standards and Technology. NISTNCSTAR1-5A Federal Building and Fire Safety Investigation of the World Trade Center Disaster ― Visual Evidence, Damage Estimates, And Timeline Analysis. 2005. 166.
  56. News: May 26, 2002. 102 MINUTES: Last Words at the Trade Center; Fighting to Live as the Towers Die. The New York Times. June 13, 2023.
  57. Book: National Institute of Standards and Technology. Final Reports from the NIST World Trade Center Disaster Investigation. 2005. June 13, 2023. 74.
  58. News: May 26, 2002. 102 MINUTES: Last Words at the Trade Center; Fighting to Live as the Towers Die. The New York Times. June 13, 2023.
  59. Book: National Institute of Standards and Technology. NISTNCSTAR1-5A Federal Building and Fire Safety Investigation of the World Trade Center Disaster ― Visual Evidence, Damage Estimates, And Timeline Analysis. 2005. 240.
  60. Book: National Institute of Standards and Technology. NISTNCSTAR1-5A Federal Building and Fire Safety Investigation of the World Trade Center Disaster ― Visual Evidence, Damage Estimates, And Timeline Analysis. 2005. June 13, 2023. 335.
  61. Book: National Institute of Standards and Technology. NISTNCSTAR1-5A Federal Building and Fire Safety Investigation of the World Trade Center Disaster ― Visual Evidence, Damage Estimates, And Timeline Analysis. 2005. June 13, 2023. 356.
  62. https://select.nytimes.com/gst/abstract.html?res=F1081EFC3D551B778DDDAD0A94DA405B848BF1D3 "Where to Get Information Before You Go"
  63. "1995: International Adoption – Paraguay ." U.S. Department of State Bureau of Consular Affairs. Retrieved January 15, 2012. "Consulate General of Paraguay Consular Section 1 World Trade Center, Suite 1609 New York, NY 10048".
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