reply to post by jprophet420
to have happen what we all saw..from fire alone...physically imposable
I have 30+ years in building both steel and stick..I know what is STANDARD to ALL buildings, and what it would take to get the SAME results as what
happened in 7.
First of..what IS a HYPOTHESIS?
isn't it a gathering of singular sources of information, put together to form...an opinion...observation...idea?
Where does the WTC7 NIST, HYPOTHESIS come from....
NCSTAR1-3 p.iii, 7.7.3... "NO STEEL WAS RECOVERED FROM WTC7"
[NCSTAR1A-3.2] "It is likely that much of the burning took place beyond the views of the windows"
so HOW can you HYPOTHESIZE "thermal expansion"...when there is NO physical evidence to even suggest it.
There have been fires MORE intense and for much longer duration...with no total global collapse...and FEMA even mentions this in their report that was
done before NIST's in FEMA 403APA "Overview of Fire Protection in Buildings" where they discuss the temps and the steel and how there has never
been a collapse of a steel structure from fire.
They discus events like;
The Cordington Tests
1st Intersdtate Bank Building,L.A. May/88
One Merridan Plaza, Philadelphia,Feb23,24/91
The Broadgate phase8, 23rd June 1990 fire an unfinished fourteen story building. The fire lasted 4.5 hours including 2 hours where the fire exceeded
1000C. fire detection and sprinkler system were not yet operational nor ANY fireproofing on the steel. Despite large deflections in the elements
exposed to fire, the structure behaved well and there was no collapse of any of the columns, beams or floors.
So...NIST, hypothesis', claims that fire "can't be seen from the windows...then what is affecting every perimeter vertical support that the facade
is attached to?
The FACADE is a non supporting structure...it is a cosmetic application and is attached to the perimeter vertical support.
It will not stand while it's SUPPORT falls behind it...
and neither will anything else...there is a lot of weight on that roof...other penthouse, HVAC, other mechanicals, and NONE of that will just
FLOAT...while all it's support fails underneath...the ends of every roof truss also sits on the perimeter vertical support.
according to the HYPOTHESIS...just ONE, vertical support falls the East Penthouse...and now we are to believe that ALL vertical support will fail, and
leave floating, what it is supporting, till all-at-once...everything can evenly fall, as fast as an object in a vacuum.
If there was a progression...we would see it reflected in the exterior of the building...we did not see that..progression does NOT mean
"dominoes"...Progressive collapse occurs when a primary structural element fails, resulting in the collapse of adjoining structural elements, which
in turn causes additional collapse. The resulting damage is disproportionate to the original cause. "It is not possible for a local failure within
the lower structure to spread horizontally, Such a failure would cause a break-away, instead of pulling the structure with it. Even if NIST’s
horizontal progression were somehow triggered,the building would not have collapsed so neatly and symmetrically. All core columns have to be severed
at the same time to make such a collapse."
for what ever direction the pulling is coming from...there are multiple structural members in place to resist/prevent lateral movement...cross,
diagonal, and lateral bracing...not to mention the redundant, overlapping applications that are applied over the steel structure to basically form it
into a solid, single unit.
we saw the sudden, even descent at a rate equivalent with the acceleration of gravity
[NCSTAR 1A 3.6]"constant, downward acceleration during this time interval. This acceleration was 32f/s^2,(9.8m/s^2), equivalent to the acceleration
This free fall drop continues for approximately 8 stories or 32 meters,(105ft.), the distance traveled between t=1.75s and t=4.0s.
This is what Shyam Sunder said at a NIST Q&A...
"free fall acceleration can ONLY occur when there is NO STRUCTURAL COMPONENTS BELOW IT"
and I agree...for you can not accelerate if there is structure there.
and the term..."even descent" has nothing to do with horizontal plane....it has to do with, no mater what position the roofline was in at the time
of 1.75s into the collapse....there is instant, vertical, accelerated, descent..of everything.
so how does a free fall accelerated total global collapse causing inferno do this.....when no one can see the ...inferno?
oh...silly me.....so THAT's why Shyam came up with the ..."brand-new-never-before-seen-physics-phenomenon...to explain the HYPOTHESIS he has NO
so who IS pushing the "conspiracy theory"?