Absolute rubbish. My own home gas BBQ can run a blue/white hot flame all day right under the cook plate(that is only 4mm thick mind you),and that plate will still maintain 90% of it's strength.

I also think you might like to have a look at some brake rotors glowing red hot,and still have enough strength to stop a race car-plain old cast iron. Then there is the old steam engine boilers--how hot do you think they get,and still,the boiler tubes can withstand extream pressures-even though they are glowing red/white hot. And no,boiler tubes are not some fancy steel,they are mild steel with thicker walls. You can cut these tubes with a hacksaw-as i have done many times.-! And i repeat-->the heat generated by the fires in the towers was not hot enough to melt even mild steel,and that is fact.
Im sorry Mark,but your smokey oxygen starved fires in the towers was no where near hot enough to weaken the giant sized columns enough to cause a building designed to withstand fire,plane strikes,and cyclones to collaps.__> now,about those columns that were melted?.

And so what if they burned all day. Light a candle and place it under a half inch steel rod !all day if you like!,and the steel rod wouldnt even glow red. This is your comparison on the scale we are looking at here.

Yes i have-and what a joke. Both FEMA's and the NIST reports failed to include the core columns dimentions. The NIST report you speak of said there were only 4 core columns on each core corner that had the larger dimention core's,and that is a load of crap.

These core columns had dimentions of 16" x 36",and 22" x 52"-your little fire isnt going to weaken them by 90%. The 9/11 commission report even denied there existance,and said they were hollow steel shafts lol.

Your common sense science go's against every other scientific,structual,and just plain impossible outcomes that all independant(not under the governments controll)reports show.These were all done by people that live that industry every day-real experts in there field,and not some one under government influence.

No,i dont fly-->do you have a degree in physics?

I do know what is, and how the ground effect work's,and if you knew what the effects of it are,then you would know it takes a skilled pilot to deal with it when it come's. When you come in to land a plane,you have to compensate for the ground effect. It wants to lift you back up,when you want to go down. Pilots use the ground effect to gain takeoff speed when running down the runway. They use the ground effect to lift the plane slightly of the tarmac,and when liftoff speed is gained,they lift off. When you come into land,the ground effect will want to lift the plane back up,so pilots compensate for this. Here we have a pilot that hadnt even finished his cessna licence,and your telling me that he could compensate for the ground effect in a 747 lol-->who is the joke on?.This so called pilot would have come up against the ground effect,and not know WTF to do. If he was the pilot,then that plane would have shot right over the top of the pentagon.

Here is an actual quote from the 9/11 commission report.
Quote: Hani Hanjour's pilot application was rejected, as he is a "terrible pilot,"
LOL-This is the same bloke that apparently piloted flight 77(a boeing 757),managed a 330* spiral dive,overcome and compensated for the ground effect,and hit the pentagon dead on target lol-(which just happened to be the very same section of the pentagon where they were trying to find all those billions of dollars that the armed forces couldnt account for)These are the words of the guys you believe,the guys that wrote the bloody report lol. You can read this for your self-the report is there for all to read.

Here is another good one to read in the report.
The terrorists decided not to target  a nuclear power plant,because(get this) the air space around it would be restricted LOL,so they decided to go for the pentagon insted This is in one of your !so called! reports Mark-along with so much more comedy.

You should take your own advice Mark,and go read the !official! government report's-->it's bloody clasic

You could come join the discussion at OUR so as we dont fill this thread with unrelated stuff (link below),but im guessing that you wont take on an actual physics professor-->the very one that found the traces of thermite at the twin towers site.

Just one of the many guys that actually knows what he is talking about-->with reserch and results to back it up.

http://www.overunityresearch.com/index.php?topic=1195.0

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I am pretty sure the answer to that is very simple.  The temperatures did get high enough to compromise the steel columns.   In the lay press you read something like, "paper burns at a lower temperature than steel melts."  That is simply dumb.  If you are burning fuel in an enclosed space, then you are creating a flow of heat power.  If the flow of heat power cannot escape, then the temperature must increase.

So wrong MH,and the proof is in many people home's. The fires in the towers were oxygen starved,and a fuel needs oxygen to burn hot. In my home,i have a slow combustion heater. This heater is made from mild steel. If i open the vent to allow oxygen into the fire box,i can get that fire white hot-->and guess what,the mild steel box dosnt melt I can close the air vent off a little-along with the flu controll,and the fire will cool-along with the heater box it self-->it dosnt get hotter,it gets colder as we reduce the oxygen. This we have running weeks at a time,and years on end-->and the mild steel fire box is still mickey mouse. So that throws the! fire was really hot enough to melt steel! out the window-->it just simply cannot happen. The molten metal you see flowing out the windows that the firemen explained ,was due to thermite(which those very firemen also stated along with that comment that they could smell a strange smell),that which you forgot to mention.

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The idea that the metal would not get compromised or melt is just one example of the silliness and insanity surrounding this tragedy.

It was indeed a tragedy,there is no debate about that. As for the metal melting within an oxygen starved enviroment,well you best come tell my fire box(that exceeds the heat that was within the trade center)that it is time it melted away.

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saying that the fires could not compromise the steel colums or melt metal.  Can't you see how crazy that is?

Crazy is thinking that the fire was hot enough to melt those giant steel column's,while my white hot fire in my heater hasnt yet destroyed my fire box. So the fire was hot enough to melt steel,but we see paper flying out the windows unscathed

Fire has never collaps a steel framed skyscraper,and yet it managed two in a single day.
By the way,my wood fire in my home is running hot--.nice and warm in here tonight.

Yes you keep repeating stuff that seems intuitive to you but you won't be bothered to do the research.  Did you read the NIST report?

Gee, you can save builders lots of money with your insights.  According to your claim there is no reason to apply vermeculite to structural steel.

So it is your contention that the NIST report is pack of lies?

Well tinman I have a prime example of just how far you've put your head up your ass.  In early 2002 a petrol tanker overturned on an overpass in the Highway 80 / 880 / 580 interchange in Oakland California.  The heat from that fire weakened, and caused collapse of the undamaged overpass above it.  Heres a nice picture for you:  http://graphics8.nytimes.com/images/2007/04/29/us/collapse2.600..jpg.

LOL are you trying to claim a degree in physics?

Ground effect adds lift making it relatively easy for even remedialy pilots in training to practice flying just above the runway.  Ground effect makes it so that it takes skill for a pilot to touch down at a specific point on the runway.

Each side of the Pentagon is nearly 0.2 miles wide.  It's one heck of a big barn door.

If you are talking about doesn't know how to operate an oscilloscope ex-physics professor Steven Jones we all know why he retired early.And no doubt little people inside his head filling it with ideas.

It has nothing to do with his abilities as a physicist.