it sure seems that 20 or 40 ratio is much higher than 1. Am I wrong that a 1 ratio compared to a 20 ratio is very different and significant?
As I was pointing out some issues I thought might be relevant, maybe you can answer those questions? Is a 40 ratio a significant issue over a 1 ratio?
I would guess that it is, am I wrong?
If I knew what the difference between pinned & fixed I probably wouldn't have to ask you if there is a difference in the way their ratio's are calculated.
I think you need to read what I wrote a little bit more carefully. No one is arguing about a difference between 1 and 40. We're arguing about the different between 0.65 and 1.0.
The reason why this is important is based on column failure. When a column has a slenderness ratio that is very low it won't exihibit a classical buckling failure and the energy required for the column to "break" as it were is much higher. Mr. Szamboti is standing by his effective length factor of 0.65 because if he uses a 1.0 (or higher as it should be in reality) his entire belief structure that the towers can't collapse is invalidated.
I've never claimed that the connections are pinned, rather I've said that the exterior columns were part of a moment FRAME (these are moment, i.e. fixed, connected). AISC clearly defines how to calculate the effective length factor of this in the following chart:
Notice how the chart says for sidesway unihibited columns (
moment frames). It is clear that the lowest effective length factor for these columns is 1.0. Thus it is also clear that Mr. Szamboti belief that the columns in the tower cannot buckle is FALSE.
To further elaborate, Mr. Szamboti claims that the columns are sidesway inhibited (that is, he is saying this NOW after I proved his previous method of calculating k was incorrect). This would mean that the top portion of the tower would be exactly over the top of the bottom portion, in other words, the tower doesn't SWAY in the wind. Do you get the difference?
He won't admit he's wrong because of something that psychologists call
cognitive dissonance. He
cannot admit he is wrong on the subject of effective length factor because that would be his belief on the towers collapsing, and thus his entire belief on 9/11 and a significant portion of his life is wrong.
He's also a peer reviewer for J911.
What you're doing right now, which is automatically assuming that he is right and everyone else is wrong is what psychologists call
confirmation bias. They have the same conclusion that you do, thus regardless of whether or not they are correct, you take them at their word. It's time to start figuring things out for yourself and stop automatically assuming that the anti-establishment is always correct.