Are you really this challenged to do your own work or even understand, or even look at the post above your junk?
So you go back and quote all of Mackey's posts and think that answers the question? Weak tits, tommy.
Par:
"Presumably, any one or more of these being true would falsify the NIST report:
* No planes hit the buildings – it was all an illusion."
Not in dispute.
"* No fires burned in the buildings – it was all an illusion."
Not in dispute.
"* The fires never burned hot enough to weaken the steel."
I'll take it. But to be fair to this claim, let me clarify: I'm not claiming that heat doesn't weaken steel. To be more effective as a criteria of falsifiability, the claim should say something to the effect of "the steel was not weakened enough for long enough for a minimum number of members to fail and initiate global collapse."
or, to put it in testable terms:
"In order for the trusses to sag to x inches, the steel in question would have to get to t degrees for m minutes."
You work in a lab. You understand what I'm saying here, right? So far so good?
"* All the fire-proofing remained intact throughout."
This is another statement of the heat-to-strength ratio of steel. But it is related, so let's go over this. The significance of the fireproofing is a question of the time it takes for the steel to heat up, right? (SFRM does not provide direct structural strength--no controversy here.)
In other words, SFRM doesn't change the load-bearing properties of steel at any temperature, it just allows steel to remain at lowers temps for longer in increased thermal environments, right?
So, a bare steel beam with a temps of 800C through the whole piece has the same structural properties as a steel beam coated with SFRM which is 800C through the whole piece. Agreed?
The major difference between these pieces is likely the amount of time they have been exposed to these increased temperatures.