Fellow researcher, we know that all 47 core columns consisted of 36 ft sections (more or less).
We know that all CC connections for all 47 core columns were on the exact same elevations (they weren't "staggered").
We know that for WTC1 all CCs had connections on the 98th floor at same elevation.
We know that the WTC1 core seemed to fail from south to north, all in less than one second, along what seems to be the 98th floor.
So, you would think that researchers and the NIST would pay special attention to this "horizontal connection plane" through floor 98 to see if connection breakage, not creep buckling, could have caused WTC1 to fail so quickly through the 98th floor.
But no. I'd suggest the serious 9-11 researcher reflect on just how much they actually know about the 98th floor CC connections and why. Friends, please ask yourselves........
1) After all this time, do you know how the core columns were spliced together in the WTC1 damage zone? Why not?
2) Have you ever read anything by NIST about how the CC splices are designed in the WTC1 damage zone.
Have you ever seen a diagram of the spices? (Did you just assume they were welded?)
3) Is there anything in the NIST reports which examines CC splice strength in the WTC1 damage zone, considering that a big airplane crashed into it's side.
Anything that examines or questions 92nd, 95th or 98th floor CC splice reaction to impact damage?
4) Considering how the whole core of WTC1 seemed to fail so quickly right along the 98th floor splice connection plane, is there anything in the NIST reports about the splices?
The only literature I've ever seen on the connections is buried in some inspection reports inhttp://wtc.nist.gov/pubs/NISTNCSTAR1-1C.pdf
From pg 48 of a WTC1 inspection
Core corner columns inspected from office area floors—Core corner columns were inspected at all four corners of the 92nd to 93rd floors and at three corners at the 77th to 78th floors. All seven locations were inspected by removing the five or more layers of gypsum wallboard around the splice locations, which were 3 ft 0 in. above the finished floor level.
On the 92nd to 93rd floors, all four splices were bolted connections. No defects were found at any of the bolted splices. Welded splices were found at all three locations on the 77th to 78th floors, and were tested using the dye penetrant method. Results from the tests showed that there were no surface cracks in the welds. Steel plates, bolts, and welds that were visible were found to have only light surface corrosion.
Core columns inspected from office area floors—Quality Assurance personnel inspected core corner columns at eight splice locations (see Table B6 in the survey report for locations). Seven of the splices were welded, and the welds were tested using the ultrasonic and magnetic particle methods. The eighth Chapter 3 Draft for Public Comment 40 NIST NCSTAR 1-1C, WTC Investigation
location was a bolted splice connection. No defects were found in any of the welded splices. Steel
columns exhibited light surface corrosion, as did the bolted splice on the bolts and splice plates.
The pg 48 quote verifies that all four corner columns on floor 92 were bolted, not welded.
There is no literature which shows that even a single CC had welded splices on the 98th floor level.
This is the only literature I am aware of which tells us about the nature of the splices in the WTC1 damage zone.
The 4 corner columns among the strongest in the core, possibly the strongest. They have bolt connections on the 92nd floor. This tells us that there is probably a horizontal plane through the 98th floor core which consists entirely of bolt connections.
There is no evidence of a single weld along the 98th floor CC connections.
When so called 9-11 "experts" estimate how many "tons of TNT" would be required to bring down WTC1, by what logic do they make these estimates?
"Experts"? Have they ever considered the nature of the 98th floor CC connections combined with the possibility of OOS runaway destruction conditions in their calculations?
What are their explosive estimates based on? (Hot air, fantasy)
"9-11 expert"= shameless liar. So much horror as a result and people pose as "experts" to dissuade further questioning?