The NIST fire simulation is not consistent with the photographic evidence.

The fire on floor 12 is critical to the NIST hypothesis because the collapse of floor 13 in the north east corner of the building is supposedly the beginning of the initiating event that led to the implosion of WTC 7.

On page 383 of NIST NCSTAR 1-9 volume 1, the fire simulation graphic of floor 12 shows the fire conveniently burning around column 79 and then coming back to it at 5:00 p.m. The NIST fire simulation is not consistent with the photographs of the fire. The photographs show, and the NIST Appendix L report states, the fire on floor 12 had burned out by 4:45 p.m. In fact, it had burned out in the east end before 4:00 p.m.

Therefore, the fire did not cause floor 13 to collapse at 5:20 p.m. and the implosion of WTC 7 did not occur as NIST has proposed.

Below is a link to a composite graphic that compares the NIST graphic with a more realistic representation of the progression of the fires on floor 12.

A professional version of this graphic will be published soon.

Chris Sarns
World Trade Center Building 7 Adviser
Architects and Engineers for 911 Truth

Wow, great lead

I look forward to professional version. You should submit to Journal for 9/11 Studies, assuming you add NIST schematics showing where column 79 is ,etc.

Column 79


The failure of the girder between columns 79 and 44 was the main factor in the initiating event.
The fire had burned out in this area before 4:00 p.m. The girder and beams had an hour and a half to cool down.
The 35 foot wide gouge in the south side would allow upper level heat to escape and create an airflow by drawing air through broken windows and out through this opening, dropping the overall upper level temperature.
Now that i have pointed out that the fire did not cause the girder to fail, NIST will probably say it was thermal contraction. :-)

The main point here is: NIST is misrepresenting the fires on floor 12! If their fire simulation is this far off, then nothing in the simulation can be taken seriously. Garbage out means garbage in.

Great job Chris!

Click to view larger image.

Version 9

Thank you sullen.
This is a work in progress. Here is the latest version.