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Topic: Collapse of the World Trade Center

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	NationMaster - Encyclopedia: Collapse of the World Trade Center (Site not responding. Last check: 2007-11-02)
		On September 11, 2001, the two main towers of the World Trade Center complex were each hit by hijacked commercial aircraft as part of the 9/11 attacks.
		No conclusive reason for the collapse has ever been established, however the most common theory is that the collapse was the result of structural damage sustained during the collapse of Towers 1 and 2, combined with widespread fires in the building.
		The World Trade Center in New York City (sometimes informally referred to as the WTC or the Twin Towers) was a complex of seven buildings, mostly designed by Japanese American architect Minoru Yamasaki and developed by the Port Authority of New York and New Jersey.
	www.nationmaster.com /encyclopedia/Collapse-of-the-World-Trade-Center (1478 words)

	Definition of Collapse of the World Trade Center
		As a result of the September 11, 2001 Attacks, both towers of the World Trade Center collapsed within a short period of the initial impacts, killing thousands.
		The north tower collapsed directly downwards, "pancaking" in on itself, while the south tower fell at an angle during which the top 20 or so stories of the building remained intact for the first few seconds of the collapse.
		A federal technical building and fire safety investigation of the collapses of the Twin Towers and 7 WTC is being conducted by the United States Department of Commerce's National Institute of Standards and Technology (NIST).
	www.wordiq.com /definition/Collapse_of_the_World_Trade_Center (2148 words)

	ipedia.com: Collapse of the World Trade Center Article (Site not responding. Last check: 2007-11-02)
		Once the collapse had begun, it was unstoppable; the huge mass of the falling structure had sufficient momentum to act as a battering ram, smashing through all the intact floors below.
		Numerous other buildings in the World Trade Center and surrounding it were damaged or destroyed as the Towers fell.
		World Trade Center 5 suffered a large fire and a partial collapse of its steel structure.
	www.ipedia.com /collapse_of_the_world_trade_center.html (1611 words)

	The World Trade Center Collapse:
		The destruction of the World Trade Center has been burned into popular consciousness as a series of endlessly repeated images of buildings collapsing in a remarkably precise manner, images whose repetition has reduced them to icons without their true true significance being fully addressed.
		What is especially striking in the collapse of both towers is the enormous volume of material being ejected early in the collapse, and the quantity of shattered steel thrown out ahead of the dust clouds.
		North Tower Collapse from the Northeast: This clip was part of a PAX/NBC compilation of views of the North Tower collapse, and is shot from east and a bit north of the tower, with the Woolworth Building in the foreground.
	www.plaguepuppy.net /public_html/collapse%20update (2818 words)

	THE FEMA REPORT ON WORLD TRADE CENTER 7 COLLAPSE IS A TOTAL JOKE. : Hawai'i Indymedia
		Note that it was next to impossible for the debris from World Trade Centers One and Two to breach the nominated fuel oil distribution pipe, as it was in the northern half of the building and was protected to the south by a concrete masonry wall and the outer perimeter wall.
		Member collapse as a result of a fire on the 4th floor would require either that there was significant additional fuel or that the fireproofing on the trusses or columns was defective.
		Unfortunately, debris from the collapse of the north tower (the closest tower) fell across the building known as World Trade Center Six, and then across Vesey Street, and then impacted WTC 7 which is (at closest) 355 feet away from the north tower.
	www.whatreallyhappened.com /fema_report.html (12862 words)

	CBS News \| Report: WTC Collapse 'Unavoidable' \| May 1, 2002 19:27:05
		The engineers said the buildings collapsed because of three factors: the force of the aircraft impacts; the heat from burning jet fuel; and the heat from the burning of the buildings' contents.
		It suggested the trade center's unique steel supports — called trusses — "may have played a role in allowing the buildings to collapse in the manner that they did." But the report said more study was needed before a final conclusion could be drawn.
		The report said the World Trade Center buildings could still be standing despite the hits by the jets if not for the additional stress caused by the fires.
	cbsnews.cbs.com /stories/2002/05/01/attack/main507678.shtml (816 words)

	The Civil Engineering Portal - News - WTC
		Ineffective fireproofing and a shortage of staircases were the main reasons for the collapse of the World Trade Center, according to a report released Tuesday and led by Dr. Shyam Sunder.
		Early tests on steel beams from the World Trade Center show they generally met or were stronger than design requirements, ruling them out as a contributing cause of the collapse of the towers, federal investigators said Wednesday.
		A vulnerability in the structure of the World Trade Center towers may have contributed to their collapse after the September 11 attacks, a leading structural engineer at the University of Edinburgh's School of Engineering and Electronics said on Wednesday.
	www.icivilengineer.com /News/WTC/structure.php (810 words)

	Collapse of the World Trade Center - Engineering News Record
		In the aftermath of the Sept. 11 terrorist attacks in New York City and Washington, D.C., which brought down the twin 110-story towers of the World Trade Center and damaged the Pentagon, designers and contractors say they are skeptical that signature structures can be hardened against extreme acts of barbarism.
		WTC rescue efforts were put off until Sept. 12 because the area was still a "hot zone" late in the day on Sept. 11, with falling debris from the stumps that were once among the world's tallest buildings, and a thick blanket of soot for blocks around.
		Observing the collapses on television news, Loizeaux says the 1,362-ft-tall south tower, which was hit at about the 60th floor, failed much as one would like fell a tree.
	www.public-action.com /911/jmcm/USYDENR (1558 words)

	Laser Beam Weapons and the Collapse of the World Trade Center
		More than five months after the sudden and total collapse of the World Trade Center (WTC), the cause of the towers' structural failure has yet to be properly investigated and remains unexplained, according to America's leading fire engineering experts.
		The destruction of the World Trade Center was the first total collapse of a high-rise in the history of the United States and the largest structural collapse in recorded history.
		The rubble of the World Trade Center, which was a steel and concrete construction, burned for more than three months, quite unlike a normal fire, despite having been sprayed with a nearly constant jet of water.
	www.serendipity.li /wot/bollyn1.htm (2462 words)

	LA County Fire .com - Collapse of the World Trade Center
		The 208-foot wide facade is, in effect, a prefabricated steel lattice, with columns on 39-inch centers acting as wind bracing to resist all overturning forces; the central core takes only the gravity loads of the building.
		Regardless of which of these possibilities actually occurred, it would have resulted in the complete collapse of at least one complete storey at the level of impact.
		However, it is possible that a storey on only one side of the South Tower initially collapsed, resulting in the "skewed" failure of the entire tower.
	www.lacountyfire.com /modules.php?name=News&file=article&sid=21 (1202 words)

	World trade - World Trade Online (Site not responding. Last check: 2007-11-02)
		Explains how the towers of the World Trade Center were constructed and what factors led to their collapse.
		The World Trade Organization is the most powerful legislative and judicial body in the world.
		The World Trade Center in New York City was a complex of seven buildings The twin towers and 7 World Trade Center collapsed in a terrorist attack on
	world-trade.searchforsearch.com (576 words)

	NY Firefighters Want Investigation Into WTC Collapse
		A respected firefighting trade magazine with ties to the city Fire Department is calling for a "full-throttle, fully-resourced" investigation into the collapse of the World Trade Center.
		In the wake of the World Trade Center, we are left with many thoughts-thoughts of friends lost, thoughts of devastated families, thoughts of the tremendous impact on so many lives for so many years to come.
		It has been reported that the World Trade Center floors were supported by lightweight steel trusses, some in excess of 50 feet long.
	www.rense.com /general18/collapse.htm (2197 words)

	Voices of September 11th (Site not responding. Last check: 2007-11-02)
		The committee, composed of most building and fire experts, was created to advise NIST in its investigation of the collapse of the World Trade Center towers on September 11, 2001.
		The hijacked airplanes that struck the World Trade Center hit with such force that the resulting explosions blew the fireproofing off the steel columns, accelerating heat buildup and weakening...
		Fireproofing could have prevented the collapse of the World Trade Center had it not been dislodged by the impact of the hijacked airliners on September 11, 2001, according to federal investigators...
	www.voicesofsept11.org /skyscraper_safety.php (759 words)

	Learning from 9/11: Understanding the Collapse of the World Trade Center
		The collapse of the twin World Trade Center towers was the worst building disaster in human history.
		First, the collapse of the Towers was the triggering event that caused much of the collateral damage to the adjacent properties.
		Second, progressive collapse – which refers to the spread of failure by a chain reaction that is disproportionate to the triggering event – was also responsible for the extraordinary number of deaths in the 1995 bombing of the federal building in Oklahoma City.
	www.fromthewilderness.com /timeline/2002/nist030602.html (2435 words)

	world trade center collapse (Site not responding. Last check: 2007-11-02)
		However, it is clear that the exterior collapsed in consequence of the building core collapsing, with the interior material having enough lateral energy to shatter the outer shell, as the core collapsed - with the cement flooring shattering into so much dust.
		In all the images of the collapse, there is nothing seen to suggest that the segmented upper "caps" (in their entirety - including the outer walls) collapsed onto the lower floors (making contact with the lower floors) - until impacting the ground.
		Returning to the World Trade Center towers, the one unexplained WTC issue is the continuing fire from below the collapsed debris.
	home.comcast.net /~skydrifter/collapse.htm (6119 words)

	LARSON COSPONSORS BILL TO ESTABLISH NEW DISASTER INVESTIGATION AUTHORITY IN RESPONSE TO WTC COLLAPSE
		Larson stated: "This legislation establishes a new authority to manage and investigate major building disasters to ensure that the mistakes and missteps that have interfered with the examination of the collapse of the World Trade Center on September 11 do not occur again.
		In the aftermath of the collapse of the buildings, there was no clear authority or effective protocol to conduct the massive investigation required.
		The problems with the investigation into the collapse of the World Trade Center was the subject of a March 6 meeting of the House Science Committee and led to today's legislation.
	www.house.gov /larson/pr_020509wtc.htm (602 words)

	Quick Response \| Natural Hazards Center
		The Natural Hazards Center activated 25 Quick Response grants to study the impacts of Hurricane Katrina.
		With funds contributed by the National Science Foundation, the Natural Hazards Center Quick Response program offers social scientists small grants to travel to the site of a disaster soon after it occurs to gather valuable information concerning immediate impact and response.
		Quick Response reports are intended to aid the rapid distribution of research findings to both scholars directly involved with hazards research and to the larger circle of interested persons.
	www.colorado.edu /hazards/qr/qr148/qr148.html (228 words)

	Building 7 Collapse WTC - 9/11 Review
		very small fires in progresswhen the building "collapsed." Not to mention that, as any one with the slightest technical background knows, diesel at normal pressure is non-explosive and barely flammable.
		The video clearly shows that it was not a collapse subsequent to a fire, but rather a controlled demolition: amongst the Internet investigators, the jury is in on this one.
		The building had not been hit by any plane, nor sustained any significant damage from the "collapse" of the Twin Towers seven hours earlier, nor was there any major fire in the building at the time.
	www.911review.org /Wiki/Building7Collapse.shtml (456 words)

	CNN.com - Collapsed Trade Center towers still dangerous - September 12, 2001
		EDT, the 1,300-foot World Trade Center towers had folded in on themselves, raining slabs of steel and cement to the streets.
		New York Mayor Rudy Giuliani was in a building near the World Trade Center after the first tower's collapse.
		A steady parade of ambulances arrived at St. Vincent's hospital near the World Trade Center, the facility that treated victims from the 1993 terrorist bombing at the center.
	www.cnn.com /2001/US/09/11/new.york.terror/index.html (943 words)

	Unasked Questions about the collapse of the World Trade Center on September 11 2001
		WTC 7, which was not hit by hijacked planes, collapsed in 6.6 seconds, just.6 of a second longer than it would take an object dropped from the roof to hit the ground.
		Molten metal found in the debris of the World Trade Center may have been the result of a high-temperature reaction of a commonly used explosive such as thermite, he says.
		The explanation provided to the public that the buildings sudden collapses were due to the "melting" of the supporting steel makes about as much sense as saying that a candle could suddenly "collapse" from "melting" due to the flame at the top.
	www.cam.net.uk /home/nimmann/peace/explosions.htm (3008 words)

	Message Concerning Collapse of the World Trade Center Towers
		This message was posted to a message forum on the same day as the World Trade Center attack.
		But apparently most other Americans could not believe what they saw with their own eyes, but instead believed what they were told to believe: that the Twin Towers collapsed because of the plane impacts and fires.
		A really serious problem indeed: A faction within the government of the United States that was willing to cause the deaths of thousands of U.S. citizens in a hoax designed to terrorize the rest of the population into accepting the imposition of a totalitarian regime at home and a campaign of military aggression abroad.
	www.serendipity.li /wot/davidr.html (780 words)

	World Trade Center: Anatomy of the Collapse
		World Trade Center: Anatomy of the Collapse (2002)
		Though the horrific, shocking details of the infamous September 11th terrorist attacks on the World Trade Center were played over and over by the American media for weeks after it, there are still many questions and holes that continue to haunt the public.
		For World Trade Center: Anatomy of the Collapse
	www.rottentomatoes.com /m/world_trade_center_anatomy_of_the_collapse (483 words)

	Last Man Down: A New York City Fire Chief and the Collapse of the World Trade Center - Microsoft Reader Catalog of ... (Site not responding. Last check: 2007-11-02)
		In minutes he was at Ground Zero of the worst terrorist attack on American soil, as the Twin Towers of the World Trade Center began to burn-and then to buckle.
		A veteran of the 1993 bombing of the World Trade Center, Picciotto was eerily familiar with the inside of the North Tower.
		This is the harrowing true story of a true American hero, a man who thought nothing of himself-and gave nearly everything for others during one of New York City's-and the country's-darkest hours.
	www.mslit.com /details.asp?bookid=0786528532 (221 words)

	Silverstein, FDNY Decided to 'Pull WTC 7': An In-Depth Analysis
		Ben Fountain, a financial analyst who worked in the World Trade Center Complex, told People Magazine that in the weeks before 9/11 there were numerous unnanounced and unusual drills where sections of both the twin towers and building 7 were evacuated for quote ‘security reasons’.
		The building would not have collapsed on its own and the only reason that they would make the DECISION to destroy the building would not be to 'save lives' as Silverstein claimed, but to make hundreds of millions of dollars on the insurance.
		The Palisades seismic data recorded a 2.1 magnitude earthquake during the 10-second collapse of the South Tower at 9:59:04 and a 2.3 quake during the 9-second collapse of the North Tower at 10:28:31.
	www.prisonplanet.com /011904wtc7.html (3688 words)

	How could the World Trade Center collapse so quickly?
		We send our thanks, too, to the many caring strangers from around the world who have been sending their good wishes to us in and around New York.
		Part of the answer may lie in the buildings' unusual construction, which is very different from the steel frame construction of most high-rise buildings.
		To many, the World Trade Center stood as a symbol of New York's and America's commercial and financial power.
	www.salwen.com /wtc (614 words)

	Why the Towers Fell - An Exclusive Investigation into the Collapse of the World Trade Center
		And the pancake thery has happend to a few bulings in the world and it was real slow about 1 minute for a 23 storie building to fall.
		Plus FEMA sucks they didnt know wtc 7 fell and Larry Stilverstine admitted he blew up wtc 7 because it had too many fires face it it was a scam the the towes fell chaching larry wanted 7 billion dollar and Predient bush 1 billion.......
		Having said that, it is possible that the governments explaination that NOVA parroted to us very convincingly on this video is not the whole story.
	www.wbthub.com /Why-the-Towers-Fell--An-Exclusive-Investigation-into-the-Collapse-of-the-World-Trade-Center-B00006ADG4 (894 words)

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