Except for 9/11, have any steel structure buildings collapsed because of fire alone?

Question

On 9/11/2007 two towers plus a third 47-story building collapsed in NYC. The third building (WTC 7) was not hit by an airplane and suffered minor damage, yet it still collapsed as if it were a demolition.

The 9/11 Commission claimed that there was a hollow central core in the towers (in fact there were 47 central support columns: Check plans and pictures taken during construction.) They also concluded that the impact of the planes did not bring down the two towers. They claim that fire caused the collapse of the two towers.

Can you give me specific dates, times, places where other steel framed buildings collapsed because of fire?

If not, then I'd appreciate your explaination for the collapse of three buildings at near free-fall speed.

Answer 1

My Advise to you is to Disregard most of those who post in Reply to 9/11Questions Simply because half of them are not your Regular users..They are government agents sent and paid to sincere yahoo and debunk and keep the sheep inline..You will know a good guy by his replies and a person who will lie to your face..In the face of cretin Truth..

Most of the posts in this forum are People who set out to debunk 9/11 or anything that diverts from the government cover up that the army has changed its story 3 times already about its involvement and why it wasn't reasonable lol and why dick Cheney was in a bomb shelter half an hour before the first plains hit..Or how osoma made norad stand down? How can anyone explain that one?? Why they Refuse to let us see privet videos and public camera footage taken with in mins of the pentagon attacks makes one wonder what kind of drugs these people are on to set here and let the government just run them over.. I have to ask Who's paying you to be so stupid?

I feel very sorry for my fellow Americans..who will forever be Doomed to end up as endless labor and meat for wars wars and endless wars for power and oil and the like..Wake up America..Press Bush great grand daddy was A NAZI!! do your home work and stop being your typical idolt american lol Claim to know everything..But infact know nothing at all..

You can also forever expect most to never stand up and be cowards all of there lives..and refuse to see truth even when its infront of there noses..Truth is painful when you wake up and see how far you"eve let your elected employees get by with your life takes a harsh turn and your head suddenly pops out of your butt and and you suddenly stop believing everything your eyes see on tv and most of what you hear spoken by government supported and funded media..where do you think they get there money from ???

The WTC Buildings are the first of there Kind to fall from fire in the entire history of steel constructed buildings..not only the two twin towers but building 7..So you have to ask your self..If its never happened before..Why suddenly have Not just one..but 2 others falling with on the same day? and the second tower with in mins of the first?? so quickly! pull a string on this story at any angel and a rat runs into a hole..there are so many holes in the 9/11 story that one has to be mentally impaired to be so blind..

And the last thing..People who Dismiss the bomb stories..i couldn't give a Shitless what they think..even if they had relatives there..I believe the story of survivors and phone calls from those who died..hearing explosives going off and video of firemen talking about it at the site as its happening .. You listen to your media and what they have written up..i prefer the raw truth and facts from the mouth of the horse not some idolt in an ac building with a high paying job that lie for a living and are funded by the government at the same time lol Who would you believe? someone who was there or someone who wasn't?? You have firemen, policemen port authorities..and regular workers talking openly about it..and yet in the face of such facts people have the ballz to lie and try and convince others that they know something..

The Government has said just about word for word what it was going to do..before hand in its manifesto started in the 90s a pearl harbor like event?? and people still are not moved or weary? I have to honestly say if this is so then you deserve what you get..stay away from me your a danger to everyone who wants to live..

Answer 2

There are no exceptions - the buildings that collapsed on 9/11 did not do so "because of fire alone."

Fact: Structural steel looses 50% of its strength at approximately 1100 degrees F. This is why the steel is coated with an insulation - to prevent excessive heating in case a "normal" fire breaks out. This fact is valid and verifiable with a minimum amount of research, is well known and is compensated for in the initial designs and building practices.

Check out the video - the impact of the first plane blew right through the entire width of the building - very likely destroying much of the insulation that coated the steel support columns and the fuel and inevitable fire ignited everything in the immediate vicinity - including lower levels as the oxygen starved fuel that wasn't immediately ignited traveled down elevator, column shafts and damaged floors.

Building WTC 7 was pretty much ignored during the chaos - the building was damaged from debris, the electric generators fired up when the electricity was intentionally shut off in the area because they were not disabled in all of the confusion and it is now theorized that the fuel storage containers and fuel lines were ruptured. Again, the ensuing fire and initial damage is most likely the cause of its collapse.

From an engineering perspective, it's not really difficult to accept what happened and the reasons behind it. The difference between static structural stress and the instanteneous moment force generated by the impact of collapsing 50 stories onto an obviously weakened section of the building - well, simply put, if no other forces are present - the building is going to come pretty much straight down, the greatest force simply being gravity.

Answer 3

it used to happen rather frequently (before 1970 or so) until the building codes required fire protection for structural steel. This is a spray on insulation/concrete type material that protects the steel for an hour or two. Buidling fires usually only have enough fuel (paper, furniture, drapes, carpets, etc.) to be hot for an hour or so. The WTC did have a jet fuel fire and plenty of fuel to get much hotter for a much longer time than a normal fire.

There is a big debate right now in the building inspector/ engineering/ building code communities about revising the buidling code to handle any possible scenario. Does this mean we should build a building to withstand a nuclear bomb? We could do it but the cost per square foot would increase from 100s of dollars per sqaure foot to 10s of 1000s of dollars per square foot.

The beams of each floor were designed to withstand the wieght of that floor plus one floor above. Once the first two floors collapsed, the third one surely could not withstand debris and weight of 3 floors plus airplane wreckage. It only gets worse as debris accumulates 5, 6, 7 floors. Being loaded at 500% (10 floors) would beging to act like the support beams weren't even there with instant collapse and it would just continue to accelerate from that point downward.

Answer 4

sure, Hiroshima 8/6/45 and Nagasaki 8/9/45
While concussive force destroyed several buildings, several steel reinforced concrete structures including several steel mills and at least one hospital were destroyed by the intense heat (fire) from the blast of nuclear weapons.

As concentrated jet fuel can burn twice as hot as it is necessary to liquify steel, and the volume of fuel within the two planes was more than significant enough to produce the KiloCalories necessary to melt steel and burn off concrete, I have no problem believing fire burned those buildings down. How can these guys and you compare the heat of a paper fire to the heat generated by a hydrocarbon?

It isn't science to be a skeptic when thousands of gallons of fuel are tossed on the fire where they have not been in previous fires in steel reinforced buildings. You can argue that I'm being silly by suggesting a nuclear detonation as comparable, but compare the BTUs. A fuel air explosion is the only comparable fire bomb in our arsenal to the intense heat of a nuclear weapon, and a fuel air bomb is the best heat comparison for this event.

Tiny space, a lot of heat, the interior columns simply melted.

Answer 5

This is not unusual if a structure has exposed metal I-beam supports. If the beams would have been encased in concrete, then the structure would have held up much longer.
Check out FM Global for more details. Another option is to have sprinklers installed on the columns. Metal columns turn to a limp noodle under heat.

Answer 6

Your question is moot, since neither of the twin towers suffered from a fire alone. They were seriously damaged from the impact. They were subjected to a jet fuel fire, NOT a normal buildnig fire.

Answer 7

nope the empire state building was struck by a B52 bomber and it didnt collapse