I’m at a bit of a loss to find out what is giving you cause for concern in relation to the collapse of WTC7.
I have read the Executive Summary of the FEMA report which states(In relation to the Twin Towers) :
I notice from your original post that you say that an “ordinary fire” cannot melt steel. I have asked what do you mean by ordinary in this context, as the fires caused by such an event would seem to me to be anything but ordinary. So much so that on page two of the FEMA executive report you find the following (again talking About the Twin Towers):
Now these statements do relate directly to the Twin Towers and not to WT7, on page 4 of the FEMA executive summary, it states that:
I have not yet seen or read anything that causes me to challenge any laws of physics, just to make sure that I was not way off the track I had a check on the temperature of a fire (maybe an ordinary fire, I don’t know), anyway this is what I found:
http://webexhibits.org/causesofcolor/3B.html
According to this the temperature can get up to around 1400C. I then had a look (just a quick look like) at what temperature is required to melt steel, I found this:
http://www.newton.dep.anl.gov/askasc.../chem99021.htm
Seemingly Steel melts at around 1300C. So even being simplistic and without going into too much detail, I fail to see what laws of physics are challenged.
Am I missing something Fred? Is there something else I should be looking at?
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