" ...an explanation of how it happened from a structural viewpoint..."
Type away bro! Love to hear your viewpoint on how it happened.
Remember, the NIST Final Report on the collapse of WTC building 7 says it was due to "fire".
Danny Jowenko gave a bit of analysis on the collapse of WTC #7 in this interview. (see link)
Danny Jowenko Complete Interview - YouTube
Maybe you can watch the interview video first, perhaps Mr. Danny Jowenko's take on the
building #7 collapse will provide you with some information about high-rise building....demolition.
That's what Danny Jowenko's field of expertise was.
Fyi, Mr. Danny Jowenko was killed on July 16th, 2011.
....I am goingoutside now....hope you got a really good explanation....you'll need one....for sure....