Is it true the Twin Towers where made in the 60,s from 100,000psi steels & highest grade cements available ?

I'm pretty damn sure that you could fly 100 jumbo jetliners into the twin towers and the steel superstructure would remain intact. Heat flows from hot to cold. The fuel simply does NOT burn hot enough to melt steel. MOST of the fuel would burn outside of the building in the initial explosion.

If a steel reinforced concrete building can survive the Hiroshima nuclear bomb, then I'm pretty damn sure the twin towers could survive being hit by jumbo jet airliners all day long. It's like whacking a tree with a hammer; you can whack it all day long buts it's NOT going to suddenly collapse.

http://www.youtube.com/watch?v=h69oUWS3Lxo

The WTC towers were most certainly NOT made with HY-100, very few Iron Workers would know what to do with HY-100 if it were used. The claim that the towers were built to survive an impact from a 707 was a dubious claim to start, read the fine print: the claim uses the assumption that the <1> 707 would be traveling at just above stall speed, not 600 mph; and at any rate it wasn't the collision with the jet that brought the towers down, it was the uncontrolled fires.

Any fireman knows that an uncontrollable fire in a steel frame building will bring the building down, it is a question of "when", not "if". The steel does not have to reach the melting point to fail.

What's more important is the capability of this ship. It can deploy tactical troops and air craft anywhere in the world. We should commit to building many more of these along with more carriers and Virginia Class Subs. The commitment would allow us to begin shutting down some of the 735 bases in 150 foreign countries that we don't need and can't afford. We need a more nimble, more effective and more cost efficient military. That would truly be an expression of honor to the 9-11 fallen.

Wrong on so many levels

The FAA has established maximum airspeed of 200 kts when flying at below 10,000 in the NYC TRACON

Typically aircraft that were taking off or doing landing approaches in the vicinity of the WTC were flying at speeds between 160-180 kts

So it makes no sense for the FAA to have a 550 kts impact speed requierment for the WTC

THERMITE as used in controlled demolition would melt steel if it reacted with the cooling system as demo'd on You Tube with ice.

Unless it was rigged up when built to make it easier to demolish when the time came, considering the work it would take to set up a controlled demolition on the scale of the Twin Towers.

Lots of things happened to distract everyone

NOTE (bugger it! I meant to put this in answer to your other question they deleted)

Multiple explosions after the fact so the firemen said.

OK your PHD in physics along with your PHD in structural mechanics, coupled with a PHD in conspiracy theories does in fact trump scientific evidence. So we will let you keep your theories and I will consider them the same as all other birther and truther theories

Shoddy workmanship!!!

True.

But the aviation fuel burned hot enough that it could have weakened the structure of the building and then collapsed under its own weight.

WTC7 is another story. Idk how that one could possibly have fallen.

Wrong section