there's no concrete core in any of your pictures. if that is concrete.... and its a big if.... it would be concrete floors because that was the only concrete in the building.
there was no concrete core.
these pictures prove it. you claim the outer most columns were attached to a concrete core.
there is no concrete core attached to these STEEL CORE COLUMNS that you claim are elevator guide rail supports. THERE ARENT EVEN ANY ******* ELEVATORS NEAR THEM!!!
You have a problem using images of buildings that are not the trade center. The top one is not the Twin towers. The other is too screwed up to tell what it is.
The steel core columns would be very visible in the core area on 9-11 and they are never seen so between that fact and all of the verified evidence, you lose.
Robertson is verified by
Oxford, verifying
Domel who describes a concrete core verified by the image of
WTC 2 core, verifying the
top of WTC 2 core falling onto WTC 3, the
WTC 1 rebar, just after the
WTC 1 west core wall is seen in an end view, then, the
WTC 1 east shear wall toppling, consistent with
interior box columns silhouetted on WTC 1 north core wall, consistent with ground zero showing the
WTC 1 north concrete core base wall, 12 foot thick, all supported as clarification of the many confused statements that do mention concrete in the core including the latest revised NIST contracted analysis of free fall by
Bazant et. al 6/21/2007, which actually provides an equivalent amount of high explosives needed to create the rate of fall they are attempting to justify with physics. It doesn't work, but at least they won't go down in history as totally supporting the deceptions.