Reply To: Engineering Prof releases draft report on 9/11 collapse of WTC Bldg 7 in NYC


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#46942 Reply

Clark

I’m not smearing Chandler’s research; he did very well measuring the descent rate of WTC7. Incidentally I take his measurements more seriously than he does himself – he gets a nice smooth velocity curve, and that indicates accuracy, so I’m prepared to accept that the WTC7 roofline’s acceleration briefly exceeded g.

The implication of that is that the roofline is less than indicative of the behaviour of the entire system. Much confusion has been generated, both by over-simplification and over-complication, eg. “g” and “free-fall” have been used interchangeably, but g is a rate of acceleration whereas free-fall is a physical condition. A thing can accelerate at g without being in free-fall, and none of the observable system elements were in free-fall, because they being affected by elements we can’t see.

Yes, I’d like a chat with Chandler; please do ask him to join us. Can we keep Gage from getting involved please? He seems angry and unpleasant, and I doubt I could remain in conversation. I have heard that David Chandler is a Quaker; do you know if that is so? I attend Chelmsford Meeting of the friends, but I am not myself a member.