I’m just a dumb ol‘ engineer
Surprised? That's what you get if you believe the media circus and do not investigate yourself... I'm just an ordinairy guy, did not believe that an aluminium aircraft could penetrate a steel constructed sky scraper build to resist an impact like this and then make it come down like?? well ?? right ! a well prepared demolision, tree times in a row. And the world watched and said: "oh the metal was so hot, it pan caked" yeah sure. Why did survivors hear bombs go off like clockwork before the collapse? Where did the heat come from to melt metal? Kerosine exploded on impact... Think again, before telling me to get help. It simple logic, which you should understand if you're the same type of engineer like I am, and the reason why I love old tractors, cars and bikes...
I’m just a dumb ol’ engineer, who aced all the structures classes, while working his way through college as a bolted steel, and fireproofing inspector, and didn’t become a structural engineer only because I got a lot better offers to go be a construction guy, and build things.
This dumb ol’ engineer knew as soon as the second plane hit, that if they were really lucky, the towers would pancake and not topple. I knew enough about how the building was put together, and that the plane impact it was designed to survive weighed less than a third of the planes which made impact.
You are right that it was a well planned demolition. The bastages who lead that effort were all graduate level architecture students at a polytechincal university in Germany, which also teaches structural engineering. The Towers were a distinct and ground breaking structural system. There were ten chapters in the back of my structures book, which were there so the book could be used as a graduate level text. One of those chapters was on the World Trade Center. The book was printed in multiple languages, one of which was German, and that book was used as a text in universities all over the world. If their classes weren't taught from that book, the library most certainly had at least one copy on the shelves.
I was very familiar with the World Trade Center’s structure because I had done that chapter for extra credit. And, personally I am certain that some engineering student who was freinds with the bastages, had explained how to take down the towers to the architects who ran the operation.
“Explosions”. Have you ever pulled a large piece of iron until it failed? I’ve been in a lab when they tested a #16 rebar to failure. You could feel it from the other end of the building. the instant release of energy destroyed a very expensive machine. The “explosions” were a cascade failure which occurred when one overstressed rod burst, and the instant increase in load to the ones on either side caused them to fail, which caused the ones beside those to fail, all the way around. That would definitely sound like a series of timed charges.
The impact points of the planes were not random.. they were chosen so that the load from the stories above would be enough to initiate a cascade failure once the structural steel cross ties started to stretch. The rolling of the plane to make a diagonal impact over multiple floors was not random. Putting the fuel in the wings into multiple floors would help assure the heat from the flames was spread out.
The sprayed on fire-proofing looks like a cross between paper mache, and hydro-turf, and is actually very easy to break away from the steel. the impact from the plane was more than enough to do it. Architects, and graduate students in structural engineering would know that.
So, please keep your ignorant opinions based on your total lack of real knowledge to yourself. At least, until you learn enough to begin asking intelligent questions, instead of spouting off your unfounded opinions.