Do tell...

... WHO told him in advance that the tower would completely collapse?

Well, Danish 9/11 activists, here is a challenge for you!

When I was first informed that both towers had come down (I woke up late), I didn't believe the messenger. I thought the person had misheard the newscast, since I assumed that the towers were built to survive fast moving commercial aircraft. Later I learned that the towers were indeed designed to survive fast moving commercial aircraft impacts. As a matter of fact, the towers were designed to survive worse kinetic energy impact damage than they sustained on 9/11. Here is the proof:

Kinetic Energy Calculations of Flight 11 and Flight 175 Impacts

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Formula for Kinetic Energy (KE)

KE = 0.5 · M · V2

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Takeoff Weights for Boeing 767 –200ER and Boeing 707 –320B

The Maximum Takeoff Weight for a Boeing 767 -200ER is 179,170 kg
(http://www.boeing.com/commercial/767family/pf/pf_200prod.html)

The Maximum Takeoff Weight for a Boeing 707 -320B is 152,400 kg
(http://www.boeing.com/commercial/707family/product.html)
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Aircraft Type, Speed and Kinetic Energy Impact Calculation the WTC Towers Were Designed to Withstand and Survive

KE of Boeing 707 at 270 m/s*

(0.5) · (152,400 kg) · (270)2

= 76,200 kg · 72,900

= 5,554,980,000 Joules
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Actual Aircraft Types, Impact Speeds of Flights 11 and 175 and Kinetic Energy Impact Calculations

Flight 11 Impact Speed into North Tower at 08:46:

KE of Boeing 767 at 198 m/s**

(0.5) · (179,170 kg) · (198)2

= 89,585 · 39,204

= 3,512,090,340 Joules

Flight 175 Impact Speed into South Tower at 09:03:

KE of Boeing 767 at 243 m/s**

(0.5) · (179,170 kg) · (243)2

= 89,585 · 59,049

= 5,289,904,665 Joules
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*270 m/s = 600 mph.

**NIST reports the impact speed of Flight 11 at 440 mph (198 m/s) and the impact speed of Flight 175 at 540 mph (243 m/s).
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As is readily observed in the above calculations, the kinetic energy unleashed upon the towers by the impacts of Flights 11 and 175 fell well within the capabilities of the towers to withstand such trauma. The towers were built to survive the impact of a Boeing 707 traveling at 600 miles per hour (965.6 km/h). The kinetic energy of such a strike would unleash 5,554,980,000 Joules. Although the Boeing 767s that struck the towers on September 11, 2001 were each approximately 59,000 lbs. (26,770 kg) heavier than the Boeing 707s the designers of the towers had based their calculations on, the reduced airspeeds of the impact aircrafts over-compensated for this greater weight, resulting in less kinetic energy expended.

The kinetic energy expended in the first strike on the North Tower by Flight 11 is calculated at a shockingly low 3,512,090,340 Joules, far below the 5,554,980,000 Joules the towers were designed to withstand and survive. The greater velocity of Flight 175 (540 mph or 874.8 km/h vs. 440 mph or 712.8 km/h for Flight 11), resulting in a kinetic energy calculation of 5,289,904,665 Joules, is still below the designers’ allowance of 5,554,980,000 Joules for the towers. These calculations prove that the towers should have survived the structural damage inflicted on them by the impact of Flights 11 and 175.

In regards to the fires in both towers, their severity and run-time were inconsequential. The National Institute of Standards and Technology (NIST) admits as much in its failure to analyze the massive heat sink properties of the towers.1 This inexplicable failure on the part of NIST is de facto recognition that fire was not the cause of the towers’ collapse. Not helping NIST on this matter is the agency’s continued stonewalling of calls from the engineering community to release the computer simulation models used to determine the fire damage to the towers’ steel.2 Is it any wonder then that the former chief of NIST’s Fire Science Division, James Quintieri, has called for an independent review into the NIST investigation.3

It should also be noted that the maximum jet fuel capacity for a Boeing 707-320B is 23,000 gallons,4 while the maximum jet fuel capacity for a Boeing 767-200 is 23,980 gallons.5 The actual amount of jet fuel that spilled into each tower was approximately 10,000 gallons,6 13,000 gallons less than the designers of the towers had allowed for to spill into the buildings.

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1. http://www.informationclearinghouse.info/article18999.htm

2. New Civil Engineer, 10/6/2005.

3.http://commdocs.house.gov/committees/science/hsy24133.000/hsy24133_0.htm

4. http://www.boeing.com/commercial/707family/index.html

5.http://www.boeing.com/commercial/767family/pf/pf_200prod.html

6. http://www.fpemag.com/archives/article.asp?issue_id=13&i=68
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Dean Jackson/Editor-in-Chief DNotice.org
Washington, DC

Emergency medical worker Richard Zarrillo was also told to pass on a message to the fire command post, prior to the first collapse, that the World Trade Center was in danger of a "near imminent collapse." See the following entry from the Complete 9/11 Timeline:

(Before 9:59 a.m.) September 11, 2001: EMT Worker Given Message That WTC Towers Are Going to Collapse; High-Level Officials Evacuate Lobby of North Tower
In the lobby of Building 7 of the WTC, EMS Division Chief John Peruggia is in discussion with Fire Department Captain Richard Rotanz and a representative from the Department of Buildings. As Peruggia later describes, “It was brought to my attention, it was believed that the structural damage that was suffered to the [Twin] Towers was quite significant and they were very confident that the building’s stability was compromised and they felt that the North Tower was in danger of a near imminent collapse.” Peruggia grabs EMT Richard Zarrillo and tells him to pass on the message “that the buildings have been compromised, we need to evacuate, they’re going to collapse.” Zarrillo heads out to the fire command post, situated in front of 3 World Financial, the American Express Building, where he relays this message to several senior firefighters. He says, “OEM says the buildings are going to collapse; we need to get out.” (OEM is the Mayor’s Office of Emergency Management, which has its headquarters in WTC 7.) Fire Chief Pete Ganci’s response is, “who the f___ told you that?” Seconds later, they hear the noise of the South Tower as it collapses. [City of New York, 10/23/2001; City of New York, 10/25/2001; City of New York, 10/25/2001; City of New York, 11/9/2001] Others also appear to have been aware of the imminent danger. Fire Chief Joseph Pfeifer, who is at the command post in the lobby of the North Tower, says, “Right before the South Tower collapsed, I noticed a lot of people just left the lobby, and I heard we had a crew of all different people, high-level people in government, everybody was gone, almost like they had information that we didn’t have.” He says some of them are moving to a new command post across the street. [City of New York, 10/23/2001; Firehouse Magazine, 4/2002; Dwyer and Flynn, 2005, pp. 214] Mayor Giuliani also says he receives a prior warning of the first collapse, while at his temporary headquarters at 75 Barclay Street (see (Before 9:59 a.m.) September 11, 2001).

Source:
http://www.historycommons.org/context.jsp?item=a959emtworker&scale=0

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http://www.shoestring911.blogspot.com