Your thoughts rest on the beliefs, that fires weakened the steel structure.
and that the towers were not designed to redistribute loads. That the steel was badly compromised, due to proof of fire retardant being knocked off etc....
What I have found will contradict what you are saying, using the NIST reports.
It casts sever doubt regarding its legitimate use of available material and data.
Your have a contradictory belief that the towers HAD to have had extreme elevated temps, BUT you deny the existence of such temps at the same time???
You are all over the place, and deny basic physical laws, so I will post in segments what I can find, and we can tackle the issues as they are presented, yes or no?
Yeah, let;s do this Mr. Jones.
Let's start with the first thing you state above. That my thoughts rest on the belief (or one of them) that the towers were not designed to redistribute loads.
This is pure bullshit. I NEVER said anything close to that. I said the towers (or any building for that matter) were NOT designed to redistribute and resist loads created from failure of other components due to unforeseen events.
I want you to explain, in your own words, how you think a structural engineer could possibly design any structure to stay erect for any and all possible permutations of structural failures that could be possible.
Structural engineers design structures to resist the loads that they will be placed under when working at 100% efficiency. Loads such as workplace furniture, people, wind, snow, etc.
If you think that John Q. Engineer calculates every possible failure scenario that could occur and then design the structure to hold up, you are SADLY mistaken.
Let's take one of the towers for example.
Do you think that they did load/stress calcualtions for:
1. Failure of 1 core column on floor 87?
2. Failure of 2 consecutive core columns on floor 87?
3. Failure of 3 consecutive core columns on floor 87?
4. Failure of 4 consecutive core columns on floor 87?
5. Failure of 2 consecutive core columns on the east side of the core and 2 consecutive core columns on the west side of the core?
6. 30% loss of yield strength of 2 core columns and 10 perimeter column on floor 87?
7. 30% loss of yield strength of 2 core columns and 10 perimeter column on floor 87 and floor 88?
8. 40% loss of yield strength of 2 core columns and 15 perimeter column on floor 87, 88, 89?
And so on, and so on, and so on.............
Do you get my point yet? Did it sink in? You are assuming that engineers do the impossible.
That's why they fireproof steel and rate that fireproofing by time. Why do they give fireproofing a time limit? TO get people evacuated? To give time for the fire department to arrive?
Your turn.