Skip Navigation | Sheffield IMC | UK IMC | Editorial Guidelines | Mission Statement | About Us | Contact | Help | Support Us

UK Indymedia UK Indymedia Sheffield Indymedia Sheffield Indymedia

NIST Admits to Partial "Freefall" Collapse of WTC7

Chris | 18.12.2008 17:09 | Analysis | History | Terror War | Sheffield | World

The official National Institute of Standards and Technology (NIST) Final Report on the Collapse of World Trade Center Building 7 admits that the top of the building accelerated at the rate of gravity for 2.25 seconds into it's own footprint -- 8 stories worth of collapse.




The graphic and text above, which is taken from page 45 and 46 of final NIST WTC7 report is based on measurements taken from this video. The significance of a period of the building falling with the acceleration of gravity is that this implies that the structure below was offering no more resistance than air and based on the NIST calculations 2.25 seconds represents the removal of 8 stories of the building. The most plausible explanation for the near instantaneous removal of 8 stories of the building is that explosives were used.

In 2006 this was explained in this way in a feature article on this site:

The key piece of evidence cited to support the conclusion of a controlled demolition consists of an analysis of the physics of the collapse -- the building dropped with an acceleration very close to that of gravity... The only way to achieve a collapse of this nature -- one which involves the whole building coming down at close to free fall speed, is for all the structural columns to fail simultaneously. This is not something that could be expected to be caused by fires, especially ones which hadn't even spread across a whole floor, the most plausible explanation does appear to be that it was a controlled demolition.

David Chandler, a supporter of AE911Truth.org was key in pressing NIST to look at the issues of the freefall collapse acceleration and has produced a very clear video WTC7: NIST Admits Freefall about this matter and has was interviewed on the latest Visibility 9-11 radio show, his web site is 911speakout.org where there is more material about the structural failure of the WTC buildings.

All the publically available videos of the collapse of WTC7 are available on this site: 1 | 2 | 3 | 4 | 5 | 6 | 7 see also New Footage of the Implosion of WTC7 and BBC World footage from 9/11 announcing WTC7 collapse 23 mins before the event.

Chris

Comments

Hide the following 2 comments

gravity

19.12.2008 14:00

are you afraid of gravity chris?

oh come on


In the dark

23.12.2008 15:07

WTF?

OCO what sort of question is that? afraid of gravity?
You're 'afraid' of the light. If a building is falling in free-fall some other energy is responsible for accelerating the lower floor masses. The inertia of the lower floors must be overcome by something.
And that's just the masses there is still some structural resistance to be overcome.

So where's the energy for that come from? And don't say this is an engineering problem because before you can do an engineering study you have to do the Empirical Science.


Its Newtons laws mate and you can't spin them.


2%Human


Kollektives

Birmingham
Cambridge
Liverpool
London
Oxford
Sheffield
South Coast
Wales
World

Other UK IMCs
Bristol/South West
London
Northern Indymedia
Scotland

Sheffield Topics

Afghanistan
Analysis
Animal Liberation
Anti-Nuclear
Anti-militarism
Anti-racism
Bio-technology
Climate Chaos
Culture
Ecology
Education
Energy Crisis
Fracking
Free Spaces
Gender
Globalisation
Health
History
Indymedia
Iraq
Migration
Ocean Defence
Other Press
Palestine
Policing
Public sector cuts
Repression
Social Struggles
Technology
Terror War
Workers' Movements
Zapatista

Sheffield [navigation.actions2016]

Sheffield [navigation.actions2015]

Sheffield [navigation.actions2014]

NATO 2014

Sheffield Actions 2013

G8 2013

Sheffield Actions 2012

Workfare

Sheffield Actions 2011

2011 Census Resistance
August Riots
Dale Farm
J30 Strike
Occupy Everywhere

Sheffield Actions 2010

Flotilla to Gaza
Mayday 2010
Tar Sands

Sheffield Actions 2009

COP15 Climate Summit 2009
G20 London Summit
Guantánamo
Indymedia Server Seizure
University Occupations for Gaza

Sheffield Actions 2008

2008 Days Of Action For Autonomous Spaces
Campaign against Carmel-Agrexco
Climate Camp 2008
G8 Japan 2008
SHAC
Smash EDO
Stop Sequani Animal Testing
Stop the BNP's Red White and Blue festival

Sheffield Actions 2007

Climate Camp 2007
DSEi 2007
G8 Germany 2007
Mayday 2007
No Border Camp 2007

Sheffield Actions 2006

April 2006 No Borders Days of Action
Art and Activism Caravan 2006
Climate Camp 2006
Faslane
French CPE uprising 2006
G8 Russia 2006
Lebanon War 2006
March 18 Anti War Protest
Mayday 2006
Oaxaca Uprising
Refugee Week 2006
Rossport Solidarity
SOCPA
Transnational Day of Action Against Migration Controls
WSF 2006

Sheffield Actions 2005

DSEi 2005
G8 2005
WTO Hong Kong 2005

Sheffield Actions 2004

European Social Forum
FBI Server Seizure
May Day 2004
Venezuela

Sheffield Actions 2003

Bush 2003
DSEi 2003
Evian G8
May Day 2003
No War F15
Saloniki Prisoner Support
Thessaloniki EU
WSIS 2003

Server Appeal Radio Page Video Page Indymedia Cinema Offline Newsheet

secure Encrypted Page

You are viewing this page using an encrypted connection. If you bookmark this page or send its address in an email you might want to use the un-encrypted address of this page.

If you recieved a warning about an untrusted root certificate please install the CAcert root certificate, for more information see the security page.

IMCs


www.indymedia.org

Projects
print
radio
satellite tv
video

Africa

Europe
antwerpen
armenia
athens
austria
barcelona
belarus
belgium
belgrade
brussels
bulgaria
calabria
croatia
cyprus
emilia-romagna
estrecho / madiaq
galiza
germany
grenoble
hungary
ireland
istanbul
italy
la plana
liege
liguria
lille
linksunten
lombardia
madrid
malta
marseille
nantes
napoli
netherlands
northern england
nottingham imc
paris/île-de-france
patras
piemonte
poland
portugal
roma
romania
russia
sardegna
scotland
sverige
switzerland
torun
toscana
ukraine
united kingdom
valencia

Latin America
argentina
bolivia
chiapas
chile
chile sur
cmi brasil
cmi sucre
colombia
ecuador
mexico
peru
puerto rico
qollasuyu
rosario
santiago
tijuana
uruguay
valparaiso
venezuela

Oceania
aotearoa
brisbane
burma
darwin
jakarta
manila
melbourne
perth
qc
sydney

South Asia
india


United States
arizona
arkansas
asheville
atlanta
Austin
binghamton
boston
buffalo
chicago
cleveland
colorado
columbus
dc
hawaii
houston
hudson mohawk
kansas city
la
madison
maine
miami
michigan
milwaukee
minneapolis/st. paul
new hampshire
new jersey
new mexico
new orleans
north carolina
north texas
nyc
oklahoma
philadelphia
pittsburgh
portland
richmond
rochester
rogue valley
saint louis
san diego
san francisco
san francisco bay area
santa barbara
santa cruz, ca
sarasota
seattle
tampa bay
united states
urbana-champaign
vermont
western mass
worcester

West Asia
Armenia
Beirut
Israel
Palestine

Topics
biotech

Process
fbi/legal updates
mailing lists
process & imc docs
tech