THE TERRORISTS KNEW EXACTLY WHAT THEY WERE DOING
AND FULLY INTENDED TO BRING THE BUILDINGS DOWN!!!
Ok, everybody who isn't a structural engineer who has studied tall buildings for years sit down...... good, so is its just me left standing then, good.
The stuff about bombs is BS. The buildings were designed to withstand a severe impact like a plane crash but there is no real way to guard against the kind of fire that was started when the aviation fuel lit up.
A couple of points:
1. As steel is heated it becomes more flexible and therefore will bend more easily and cannot sustain as much load before it deforms.
2. Buildings are only designed to withstand major fires for a certain amount of time (ie. 1-2 hrs). This is generally related to the time it would take to fully and safely evacuate the structure and how long the structure can resist the damaging effects of the heat. The fact that the WTC remained standing as long as it did with that massive a fire load is very impressive.
3. Clen makes it hard for you to concentrate...... shit....
4. If you watch the close up tape of the collapse you can actually see the exterior columns begin to buckle on the burnt out floors and then fully deform as the building comes down.
Because in a skyscraper, as you get closer to the ground the structure become much more massive and strong because it has to support all of the weight of the floors above. The terrorists knew exactly what they were doing when they hit the buildings where they did. It was at a point where the structure isn't very strong, but there is enough mass above so that when the impacted floors collapse it overloads the rest of the building resulting in a total catastrohpic failure..... and clen makes it hard to concentrate.
Kinda close but no cigar. The south tower went down 1st, even though it was hit 2nd, not because of any swerving or hitting lower down, but because it impacted almost in line with one of the building's faces, and severly damaged that side. This reduced the structures ability to support itself laterally so it literally tipped over after the adjacent columns had been sufficiently weakened by the fire. You can see this in the footage, it looks as if its toppling over, kinda like if you kick out two adjacent legs on a table, while the other tower went almost straight down. THis is the fastest and easiest way to knock down a building like this.
Bottom line, they knew exactly what they were doing and had 100% intent to bring the towers down. They hit the buildings where they were the weakest, if they hit lower down they might not have fallen at all. Oh yeah and clen makes it hard to concentrate... i'm shaking like a leaf here..... shit...
AND FULLY INTENDED TO BRING THE BUILDINGS DOWN!!!
Ok, everybody who isn't a structural engineer who has studied tall buildings for years sit down...... good, so is its just me left standing then, good.
The stuff about bombs is BS. The buildings were designed to withstand a severe impact like a plane crash but there is no real way to guard against the kind of fire that was started when the aviation fuel lit up.
A couple of points:
1. As steel is heated it becomes more flexible and therefore will bend more easily and cannot sustain as much load before it deforms.
2. Buildings are only designed to withstand major fires for a certain amount of time (ie. 1-2 hrs). This is generally related to the time it would take to fully and safely evacuate the structure and how long the structure can resist the damaging effects of the heat. The fact that the WTC remained standing as long as it did with that massive a fire load is very impressive.
3. Clen makes it hard for you to concentrate...... shit....
4. If you watch the close up tape of the collapse you can actually see the exterior columns begin to buckle on the burnt out floors and then fully deform as the building comes down.
If they initialy wanted for the towers to fall in then why didn't they hit the towers lower?
Because in a skyscraper, as you get closer to the ground the structure become much more massive and strong because it has to support all of the weight of the floors above. The terrorists knew exactly what they were doing when they hit the buildings where they did. It was at a point where the structure isn't very strong, but there is enough mass above so that when the impacted floors collapse it overloads the rest of the building resulting in a total catastrohpic failure..... and clen makes it hard to concentrate.
The reason for this difference is simple - the south tower was hit lower down by a pilot who even swerved to increase the impact force through added G and on the video replays you can see the differences in the impact. I also clearly remember one of the eye witnesses stating that the 767 crashed into the north tower but the 757 crashed THROUGH the south tower. Add to that the fact that it was impacted lower down meant more weight above the fire and the damaged exterior support columns some of which would have been completely severed by the sheer force of impact. I also have to agree 110% with Chesty in that I don't think the terrorists thought that they would actually bring the towers down otherwise they would have struck them even lower down leaving even more people trapped above the fire or causing almost instantaneous structural failure which either way would've made even this horrific death toll pale by comparison!
Kinda close but no cigar. The south tower went down 1st, even though it was hit 2nd, not because of any swerving or hitting lower down, but because it impacted almost in line with one of the building's faces, and severly damaged that side. This reduced the structures ability to support itself laterally so it literally tipped over after the adjacent columns had been sufficiently weakened by the fire. You can see this in the footage, it looks as if its toppling over, kinda like if you kick out two adjacent legs on a table, while the other tower went almost straight down. THis is the fastest and easiest way to knock down a building like this.
Bottom line, they knew exactly what they were doing and had 100% intent to bring the towers down. They hit the buildings where they were the weakest, if they hit lower down they might not have fallen at all. Oh yeah and clen makes it hard to concentrate... i'm shaking like a leaf here..... shit...