I understand completely
Here is why I am skeptical of the conspiracies, especially those that involve shaped charges. Also, after doing a quick bit of research it was 767's that crashed into the respective towers.
A 767 is a twin engine, twin aisle cabin commercial jetliner. It is the third largest type Boeing makes currently, behind the 747 and 777.
Using cautious estimates, each of those buildings were struck by projectiles weighing 200,000lbs each, going at easily 350mph, carrying at minumum 5,000 gallons of jet fuel.
That is an extraordinary impact, and one that no highrise building in the world could survive. I think you are possibly overlooking the damage to the structure when that happens. Also, your assertion of the use of secondary explosives makes little sense. If you were going through the trouble of doing that,
why not set them off at the same time?
Why stagger them and allow more people to escape?
Why bother with the airplanes if the bombs would do?
Why bother with the bombs when the airplane alone would work?
Let's try and keep this out of the realm of 'why would they...'. Why? Because I am not looking at that, and it doesn't matter to this point. Why did Nero set fire to half of Rome and blame the Christians? I have no idea, but he did. (btw, those that forget the past are doomed to repeat it)
I'm looking at 'what really happened'. That's all I'm concerned with here.
Why they would use shaped charges is less important than, does the evidence suggest someone used shaped charges. The evidence does. A plane impact and fire ball 80 floors up, does not explain how a steel support beam at ground level has a perfect 45º cut.
To be honest, I completely understand your skepticism. For my part, whenever people start off on these theories, I assume them to be bogus. But in this case, I got tired of hearing about it, and thought I'd check it out in order to have reason to tell them they are wrong.
Unfortunately... I had to come to the conclusion they were right.
Back to your information. 200K lbs, lots of fuel, 3rd largest plane. Claim, this is extraordinary hit that no high-rise could survive.
Why? Who said? Ok, FEMA and the contractors, and Underwriters Laboratory, all disagree. Not one single report from anyone anywhere claims that direct damage from the plane caused mortal support damage to the building. Further, if it did... the building would have crumbled on impact.
Once the main load barring supports are cut from the impact, fire or heat of any kind would not be needed, the building would fall. So clearly they were not cut.
But as 'extraordinary' a hit as that might have been. Do you really think that hit to be on par with the force of a hurricane? Do you realize the sheer force of 100 MPH winds along the entire side of a building that tall? You think one little plane is more than all that? Not at all. If only I was that good at math, I'd calculate out the lbs/sq in of force that some of the storms the Twin Towers went through, and compare to the force of one plane. I would wager the difference being Sun vs. Moon.
Further, this building was designed with an external steel frame, designed like a metal mesh grid. Just like an aluminum screen door, if you punch through it with a pencil, does the entire screen fail? Of course not. Nor did the mesh steel frame of the towers.
The problem is, everyone knows there is no possible way that those planes could level those buildings. Everyone knows that. This is why FEMA and UL, and every report does NOT say that the planes impact did the damage.
That leaves us with the fire. Which again, as I have pointed out many times, from a scientific perspective, there is no possible way that fire brought the towers down. None. I realize science is poorly taught in American schools, but do a little research, it flat out isn't possible.