So Hewia, how much pressure would be needed to destroy the columns necessary to destroy WTC7?
According NIST, using unknown software to analyse the structure, you only need to remove one piece of one column, no. 79, between two floors, 11/13, and the whole thing self-destructs in 6 seconds, 2.5 of which are free fall, as shown in the NIST WTC7 report.
No pressure at all is required for this 6 s Hollywood show. Look at the pictures in the NIST report. Parts flying around, etc. A child knows it is fantasy.
In my opinion you have to remove most columns below floor 11 to start the show. It takes two seconds. How is this done? I will tell you later. You have to be patient.
As some columns are still there providing resistance, you need under pressure below floor 11 to suck down the structural assembly above floor 11 at free fall. Gravity alone cannot produce free fall, when there are columns below providing resistance, you see. This part of the show takes 2.5 seconds.
And when the structural assembly above floor 11 hits ground after these 2.5 seconds of free fall, evidently, visible things slow down (the upper part assembly self-destroys) during another 2.5 seconds due to contact with ground (no more free fall) and produces a big cloud of dust to hide the manipulations done previously.
Now, re question about removing columns, etc., the info to answers is secret. Husch, husch. You know. If published anybody can start demolish buildings right and left.
You are instead, kindly, requested to inquire NIST about its magic software.