What caused all the lower columns (not on fire) to weaken to allow 3 WTC buildings to collapse at free fall?

Question

http://www.members.shaw.ca/truth911/truth911/towers.htm

Molten Metal on 9/11 - impossible to create from an air fire! :
http://www.youtube.com/watch?v=JithuVAIb7Y

Controlled demolitions of 3 WTC buildings:
http://www.youtube.com/watch?v=Qa7PN-8T2VY

Building 7 was not hit by any plane or seriously damaged:
http://www.youtube.com/watch?v=EZ9BofDUXv0
http://video.google.com/videoplay?docid=2073592843640256739

Flight 93 - where is the wreckage and debris? :
http://www.youtube.com/watch?v=-59kouBgO_s&NR=1

Pentagon - where is the 80 tonnes of jet plane debris? :
http://www.youtube.com/watch?v=Rgyq2H7PpO0
http://www.youtube.com/watch?v=lSeaZLYViwU

"9/11 Mysteries" - detailed scientific analysis of what happened on 9/11:

Part 1:
http://video.google.com/googleplayer.swf?docId=-8452331984890658202&hl=en

Part 2:
http://video.google.com/googleplayer.swf?docId=1018616329475082196&hl=en

Part 3:
http://video.google.com/googleplayer.swf?docId=6024263701753064760&hl=en

http://truth911.net

Answer 1

To answer your queries:

1. Molten Metal -
It’s unclear if the clean-up crews found molten metal. But even if they did, it was probably melted aluminum.

Jet fuel & ordinary fires burn at 1100 deg C

Aluminum melts at merely 660 deg C & this would explain the molten metal seen.
http://wtc.nist.gov/pubs/factsheets/faqs_8_2006.htm


2. Controlled demolitions -
Essentially all demolition experts say the collapse didn’t look like a “controlled demolition.”

Here’s an article from the world-renowned journal, Implosion World that destroys the “controlled demolition theory” :

http://www.implosionworld.com/Article-WTC%20STUDY%208-06%20w%20clarif%20as%20of%209-8-06%20.pdf

3. Building 7

The fact that WTC7 collapsed even though it wasn’t hit by the planes is not surprising.

Even though they were NOT hit by the jets, numerous buildings over a wide area were hit by debris from the collapsing towers and were destroyed.

This includes: The Marriott World Trade Center , 6 World Trade Center, 5 World Trade Center, 4 World Trade Center, and St. Nicholas Greek Orthodox Church (which wasn’t even in the WTC complex). The Deutsche Bank Building was also outside the WTC complex & was massively damaged, and was declared a total loss in 2004.
http://en.wikipedia.org/wiki/9/11_attack#Damage

As for WTC 7:
According to NIST "On about a third of the face to the center and to the bottom — approximately 10 stories — about 25 percent of the depth of the building was scooped out." See http://www.popularmechanics.com/technology/military_law/1227842.html?page=5#wtc7

4. Flight 93 -
Much plane debris was found. Many small pieces had travelled as deep as 30 feet into the ground. The largest plane piece recovered was an engine fan.

5. Pentagon -
Plane debris, and a lot of it, was found at the Pentagon also
There are numerous photographs of large pieces of the plane, many of these were published in the newspapers.

Here’s a nice picture:
http://www.popularmechanics.com/technology/military_law/1227842.html?page=6#bigplane
(scroll down after clicking)

The “American Society of Civil Engineers” & the “Structural Engineering Institute” (both are non-governmental) investigated the Pentagon crash. Their report is called "The Pentagon Performance Report" & it’s at:
http://www.fire.nist.gov/bfrlpubs/build03/PDF/b03017.pdf

The report contains numerous references to plane debris & body parts found in the Pentagon. For example, on page 26, there’s a good description of where the plane debris was found.

6. Aluminum frying pans - Leave one on a stove with nothing in it, on high, and it'll burn through. That's melting.

7. Burning paper, wood and mahy other things are orange. That's why you see orange stuff coming out.

Answer 2

I heard the engineers who designed the development on an incredible non-american documentary. They discovered the way it ought to ensue, why would be unable to you? unquestionably, who has jet gas laying around to attempt with? The vertically placed columns of steel have been basically rather weakened with the aid of the fireplace. the better reason it failed replaced into the shown fact that the flooring gave out. those flooring have been a key structural ingredient, combating the steel from deforming different than in one-floor spans. without the flooring, the columns have been spaced too severe. right it rather is my test. one million. Make 8 squares of thin card or thick paper, 5" sq.. 2. Get 40 straws and decrease off the versatile bits. 3. Use a hollow-punch or such to make one million hollow in each and each corner of the squares and each inch alongside the aspects (20 holes consistent with card) - make certain the holes will extra healthful the straws. 4. Thread the straws during the holes. One set would desire to have 5. Squares, flippantly spaced. the different would desire to have basically 3. 6. attempt how plenty weight they'd carry. those squares characterize the flooring, the straws the steel, and the holes are an attempt to reproduction the shown fact that the concrete is poured around the steel so that's totally comfortable. i've got not finished the test so i would be unable to assist you to realize what lengths of straws could be maximum sensible, yet no longer something I observed on that different question replaced into like this. the fireplace wasn't the better reason. the wear and tear from the airplane to those flooring, which then deteriorated added by using fireplace replaced into the reason. steel and different issues warmth up and distort while they're overwhelmed from falling a large distance and having heavy issues fall on them. it somewhat is likewise why such assorted bodies have been by no skill recovered. the wear and tear from those falling homes to the guidelines of WTC 7 is the only reason i'm able to make certain it falling. edit: one element people shop forgetting replaced into that those homes have been fairly designed so as that as quickly as they fell down - with the aid of twist of fate or on purpose - they could fall rapidly down. the shown fact that those 3 homes fell in a fashion that resembled planned demolition isn't something better than remarkable engineering. Kudos to that guy, by using fact in any different case plenty extra people could have died.

Answer 3

http://www.youtube.com/RKOwens4

If you forgotten about how horrible 9/11, this tribute should remind you. Don’t forget about 9/11. These conspiracy theorists seem don’t care and use this disaster as an excuse to expand there paranoia to others......
http://www.youtube.com/watch?v=kv4s3fn8jDc

Answer 4

How about the force of the collapsing floors above. Don't you conspiracy nuts ever stop to think before you rant?

How the hell did you pass high school science?

Answer 5

To answer this question,visit:

http://www.seeloosechange.com

The molten metal cannot be aluminium (melting point 580
to 650 C). Last I remember, they make frying pans out of
aluminium! And these don't melt when exposed to air fires!
Also, molten aluminium is silvery/grey in colour, not yellow or
orange (like molten steel).

http://www.journalof911studies.org

http://www.physics911.net

Answer 6

Globalist explosives. One-worlders and United Nation pushers needed the catastrophe to bring about their Satanist plans.

Answer 7

Here ya go:
http://www.civil.northwestern.edu/people/bazant/PDFs/Papers/00%20WTC%20Collapse%20-%20What%20did%20&%20Did%20Not%20Cause%20It%20-%20Revised%206-22-07.pdf

Enjoy!