Some Misunderstandings Related to WTC Collapse Analysis

[Tony Szamboti]

This is just pure nonsense.

No it's not. If the 98th floor were intact and had its frame solidly connected it would fall as one unit as the structure below it failed. This would give the illusion of the collapse starting at the 98th floor but would really be the first level that fell as one unit appearing to be the fail point. Truth is the remaining damaged area below it is what gave out and the intact 98th floor flat is what fell into it.

I've tried to make this point to Tony numerous times with no success. The columns and stucture in the 3 floors BELOW 98 all supported by columns from 4' above floor 96 to 4 feet above 98 sustained considerable impact damage as did those from 93 to 96. When this 6 story region failed the top which was little damaged came down.... see the attached slide. The outburst of debris is consistent with the damage and the structure.

I think you mean a splice was located every three floors in the core and the ones involved in the damaged area would have been 4 feet above the 95th floor slab.

The 98th floor did not suffer impact damage except for one perimeter column and the 97th almost no core damage.

You and Albert are both wrong if you think the 6 story impact region is what failed to initiate the collapse. The initiation occurred nearly simultaneously across the actual 98th floor and then went upwards at first with the 99th through 101st floors collapsing before the 97th and down. This could only have been a result of charges.