Reply #259: Minimum Explosives = 14 Tons & There Is No Gravel In Floors

[Christophera]

Posted by vincent_vega_lives

There is plenty of energy in that building to smash the concrete in the floors to fine grain "sand & gravel".

The floors were lightweight concrete which contains NO gravel. It is comprised of vermiculite, flyash or pumice with fine silica sand and portland cement.

Jim Hoffman calculates 14 tons of high explosives would be needed to create the dust and propell it into the massive clouds that existed.

I think more than 25 tons was used. And of course if that went off without optimum containment and distribution, the detonation would have looked a lot different than what we saw.

The energy contained in the falling mass is enough to break a lot of concrete, but the notion that high strength structural concrete would be crushed is non sense. Lightweight concrete yes, but not structural.