30-07-2012, 12:40 AM
(This post was last modified: 25-09-2012, 01:42 AM by Jeffrey Orling.)
Aside from the questioned findings of the Harrit paper of thje existence of NT by the Millette paper and the nano thermite challenge... even if nano thermite could be tailored to be cutter charges or "explode" the steel frame apart.. where is the evidece of the steel being blown apart or cut with *cutter charges*? I know... they spirited all that evidence away and left only the stuff which looks like the frame fell apart naturally to conceal their crime... and operative nasty Guiliani was in charge of evidence destruction.
The dog ate the homework is not going to cut it... no pun intended. Show examples of steel cut with NT... or evidence of steel exploded by devices.. There IS buckled steel from the collapse zone and this would indicate that that steel... at least... was too weak to support the axial loads upon it and buckled. And of course since we know the axial loads did not increase it meant one of three or a combination of the three things...
1. the other load paths have been destroyed or compromised... could be from plane destruction of even explosives... or heat weakening (I suppose)
2. the strength of the found buckled columns had been driven down by heat... as heated steel has less strength then cold steel
3. the factor of safety was not high enough to for the remaining steel columns... those not severered by planes of explosions (no evidence of) such that heat weakening was able to drive the FOS below 1 and the columns failed. Had the designed in FOS been much higher the columns would endure more heating and so forth before failing. The FOS was a bit higher than a typical steel frame but the factors eroding it were able to fail the frame.
Others have pointed out how unusual the collapse was because no steel frame collapsed from office fires alone. And neither did the twin towers. The twins were ALSO subject to loss of a large number of columns from the plane strikes and this was not the case in any other office building/high rise on fire. And the twins were of a unique hull in core long span column free office space and extremely light weight construction and no other tower which was on fire had such a design. And of course both twins also had thousands of gallons of jet A fuel which burned and spread the fires and both had huge holes from the plane strikes which ventilated the fires... unlike other high rise fires.
The towers fell from a cascading series of progressive multiple factors which failed the core.. leading to the floor collapses / destruction leading to the facade peeling (not being exploded off) leading to the core being stripped of most of the bracing and it collapsing from its own weight as a result of Euler forces.
But of course explosions can destroy things too.
Why did anyone want to destroy the WTC?
The dog ate the homework is not going to cut it... no pun intended. Show examples of steel cut with NT... or evidence of steel exploded by devices.. There IS buckled steel from the collapse zone and this would indicate that that steel... at least... was too weak to support the axial loads upon it and buckled. And of course since we know the axial loads did not increase it meant one of three or a combination of the three things...
1. the other load paths have been destroyed or compromised... could be from plane destruction of even explosives... or heat weakening (I suppose)
2. the strength of the found buckled columns had been driven down by heat... as heated steel has less strength then cold steel
3. the factor of safety was not high enough to for the remaining steel columns... those not severered by planes of explosions (no evidence of) such that heat weakening was able to drive the FOS below 1 and the columns failed. Had the designed in FOS been much higher the columns would endure more heating and so forth before failing. The FOS was a bit higher than a typical steel frame but the factors eroding it were able to fail the frame.
Others have pointed out how unusual the collapse was because no steel frame collapsed from office fires alone. And neither did the twin towers. The twins were ALSO subject to loss of a large number of columns from the plane strikes and this was not the case in any other office building/high rise on fire. And the twins were of a unique hull in core long span column free office space and extremely light weight construction and no other tower which was on fire had such a design. And of course both twins also had thousands of gallons of jet A fuel which burned and spread the fires and both had huge holes from the plane strikes which ventilated the fires... unlike other high rise fires.
The towers fell from a cascading series of progressive multiple factors which failed the core.. leading to the floor collapses / destruction leading to the facade peeling (not being exploded off) leading to the core being stripped of most of the bracing and it collapsing from its own weight as a result of Euler forces.
But of course explosions can destroy things too.
Why did anyone want to destroy the WTC?