The Official Story tells us that the twin towers collapsed in a pancake fashion due to structural failure caused by the intense heat from the burning jet fuel. In other words, the floors at the impact zones lost their integrity, causing them to collapse downward, taking out each and every floor below them in the process. This defies the laws of physics, as each floor below would create a significant resistance that must be overcome in order for the towers to collapse all the way to the ground.

• The towers fell at nearly freefall speed, at the same rate of acceleration of an apple falling onto Isaac Newton's head, following the known equation for the acceleration of gravity.
• Both towers collapsed symmetrically, straight down, into their own footprint.

Given these two facts, the official story falls flat on its face, like so much rubble at ground zero. If the buildings had collapsed due to structural damage to the upper-third of the building, the entire collapse would have taken much longer than 10 seconds, which is freefall speed. Each floor hitting the one below it would meet increased resistance, thus slowing down the rate of fall.

No one will argue that the twin towers fell at freefall speed. This was acknowledge by the 9/11 Commission as well as the NIST report. But how do you explain this rate of fall when the impact damage was only at the upper one-third of the buildings? The towers consisted of a massive supporting core in the center, and surrounded by a structural steel skeleton around the outside.

The heat damage from the jet fuel would have done very little structural damage, as most of the fuel was burned off in the initial impact. Even if the structural steel on the floors that were hit were weakened from jet fuel heat, that part of the building would have most likely 'warped' in an asymmetrical pattern.

Q: How could those massive core columns standing 110 stories into the air all fail simultaneously to accomodate a collapse at freefall speed?
A: Controlled demolition.

Collapse Theories
Theories Purport to Explain the Unexplainable