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Originally Posted by highway80west  And like I said earlier, who could have ever thought that the steel was made to withstand the shaking done by the unpredicatble winds in the wintertime, not from airplanes flying into them with the fuel tanks nearly full? I don't know much tougher the steel needs to be made to withstand temperatures hotter than the standard melting temperature.
Ask any steel worker in the 1970's just how hot it was inside the steel mills, and how hot the steel is pre-fabricated from hot liquid before they start to cool off.
Take a look at the San Diego-Coronado Bay Bridge. I see that bridge every day when I work at the ballpark. San Diego-Coronado Bridge - Wikipedia, the free encyclopedia |
The thing is, the fires didn't have to create enough heat to melt the beams themselves...Just weaken/soften them enough to fail...
Secondly, the heat inside a steel factory doesn't set the temperatures for steel produced reaching a certain 'soften' stage of the steel itself...
They make several types of steel in a steel plant...Different types to withstand different stresses such as wind, weight, etc...
In this case, several types of steel materials were used in the construction of the towers...The ground support steel, that was thicker and heavier, allowing for extra weight to be built on it's foundation...The lighter 'flexible' 18 inch steel for building higher and withstand wind stresses, then lightweight floor truss system used to bridge and add stability to the exterior walls.
Now, all of these types of steel have not only different stress levels, but have different melting temperatures...The lighter the steel, the lower the melt point. In return, the lower the softening point as well...
And our dear Gracie, along with her other 9-11 conspiracy nuts, don't seem to be able to grasp the difference in those types of materials. Instead, they figure all the steel used were the same stress type/melting point.
And they had to use lightweight materials to lessen the weight stresses in order to build as high as they did...Which was higher then the Empire State building itself which was built of heaver steel components then used in the WTC.
Put it this way...If I ever decide to build myself a highrise? I will not be having Gracie or her 'authorities' doing the job for me...Although I'm sure Gracie would hire her 'pool boy' Ryan in a heartbeat...