Porkpie Hat
Critical Thinker
- Joined
- Nov 29, 2006
- Messages
- 414
http://wtc.nist.gov/progress_report_june04/appendixl.pdfActually, if you can point me to one person or report who even remotely tries to explain what happened to the core steel columns in WTC 1 & 2...I will admit that I am a fool. That's all you people have to do. Come on, there's like 50 of you out there. That will close the case for good.
I hate to rain on your parade(s) but steel-structured skyscrapers don't just crumble to the ground because a fire plus/minus some minor EXTERIOR damage. Where's the critical-thinking when you need it. Doh!
And, just in case I forget...I love all of you beautiful people.
The people who wrote this don't watch you tube so its kinda dry reading.Appendix L
L–32
The 5 s to 6 s delay between the failure of the east penthouse and the failure of the screenwall and west
penthouse (shown in Fig. L–27) approximates the time it would take for the debris pile from the vertical
failure progression on the east side of the building to reach Floors 5 to 7 and damage the transfer trusses
and girders in this area.
A kink developed in the north facade approximately where column 76 projects to the north face. The
kink may have formed in the plane of the north facade or it may represent a displacement in the structure
along this line towards the south. The area of this kink correlates to the easternmost cantilever transfer at
Floor 7. All of the Floor 7 cantilever transfer girders had back spans supported along the line of the north
core columns, of which the easternmost one was supported by truss # 1. This north facade kink also
coincides with the girders at the eastern edge of the cooling tower area at Floor 46.
When the screenwall and the west penthouse sank into the building, a line of windows broke from
Floor 44 down to the bottom of the visible range, which is approximately at Floor 33 on the west side of
the structure (see Fig. L–27). This area aligns with column 61, which is supported by the cantilevered
end of transfer truss #3 between Floors 5 and 7, as shown in Fig. L–31. This suggests Appendix L
L–32
The 5 s to 6 s delay between the failure of the east penthouse and the failure of the screenwall and west
penthouse (shown in Fig. L–27) approximates the time it would take for the debris pile from the vertical
failure progression on the east side of the building to reach Floors 5 to 7 and damage the transfer trusses
and girders in this area.
A kink developed in the north facade approximately where column 76 projects to the north face. The
kink may have formed in the plane of the north facade or it may represent a displacement in the structure
along this line towards the south. The area of this kink correlates to the easternmost cantilever transfer at
Floor 7. All of the Floor 7 cantilever transfer girders had back spans supported along the line of the north
core columns, of which the easternmost one was supported by truss # 1. This north facade kink also
coincides with the girders at the eastern edge of the cooling tower area at Floor 46.
When the screenwall and the west penthouse sank into the building, a line of windows broke from
Floor 44 down to the bottom of the visible range, which is approximately at Floor 33 on the west side of
the structure (see Fig. L–27). This area aligns with column 61, which is supported by the cantilevered
end of transfer truss #3 between Floors 5 and 7, as shown in Fig. L–31. This suggests that the observed
window breakage may be related to the failure of column 61 or truss #3.
Also check out figures L-33 and L-34 for a pictorial summary of the collapse sequence.
When you can prove this is bs without using you tube and conspiracy jargon (ie actual science!) someone here may start listening to you.
ps. If you don't understand what it says, go back to playing with your toys.
I'm thinking of withdrawing my generous invitation to 28K. His more recent posts, where he expressed utter disbelief that we could possibly believe the "official version" reeked of a familiar poster. Pardalis and others were right.