Uploaded February 2020 | Updated September 2026, 33 minutes ago
In 2015 Dr. Hulsey from the University of Alaska Fairbanks started a study on the collapse of the Building 7 of the WTC complex, this video is an overview of his struggle to provide the simulation results his client has asked for. All the video sequences shown can be found in his dataset release, which is basically a huge unordered data dump of his working directories.
The videos were in a bad condition, extremely low in resolution and sometimes even corrupted, containing more frames than standard video players would show. The image quality has been improved using modern AI-based image scaling methods and all video frames are displayed for documentation purposes.
I haven't digged into the source files much because it's extremely time consuming and likely not worth it. However, from visual inspection I'm pretty much convinced that Hulsey's work hasn't fulfilled the promises being made to outclass the simulations from NIST regarding accuracy and methodology - just to say this in the most diplomatic way.
But I think it's interesting to see nonetheless. It reminds us of the achievement NIST has accomplished in 2007, and in the fact that even now it's hardly possible to compete with them on simulating this building.
Here is my earlier plausibility check of the final videos: youtu.be/jVE3YwRgU9k
Mick West made a video dissecting the sims in more detail: youtube.com/watch?v=7OClixCTdDw
Made by Dr. Leroy Hulsey + Team using SAP2000 and ABAQUS, funded by AE911Truth.
Sources: http://ine.uaf.edu/wtc7
Kostack Studio was not involved in the making of these simulations.
In 2015 Dr. Hulsey from the University of Alaska Fairbanks started a study on the collapse of the Building 7 of the WTC complex, this video is an overview of his struggle to provide the simulation results his client has asked for. All the video sequences shown can be found in his dataset release, which is basically a huge unordered data dump of his working directories.
The videos were in a bad condition, extremely low in resolution and sometimes even corrupted, containing more frames than standard video players would show. The image quality has been improved using modern AI-based image scaling methods and all video frames are displayed for documentation purposes.
I haven't digged into the source files much because it's extremely time consuming and likely not worth it. However, from visual inspection I'm pretty much convinced that Hulsey's work hasn't fulfilled the promises being made to outclass the simulations from NIST regarding accuracy and methodology - just to say this in the most diplomatic way.
But I think it's interesting to see nonetheless. It reminds us of the achievement NIST has accomplished in 2007, and in the fact that even now it's hardly possible to compete with them on simulating this building.
Here is my earlier plausibility check of the final videos: youtu.be/jVE3YwRgU9k
Mick West made a video dissecting the sims in more detail: youtube.com/watch?v=7OClixCTdDw
Made by Dr. Leroy Hulsey + Team using SAP2000 and ABAQUS, funded by AE911Truth.
Sources: http://ine.uaf.edu/wtc7
Kostack Studio was not involved in the making of these simulations.
![Condo Collapse Simulation | Champlain Towers South Surfside, Florida, Miami [8K]](https://i.ytimg.com/vi/HPwJ0JvTcg8/mqdefault.jpg "Condo Collapse Simulation | Champlain Towers South Surfside, Florida, Miami [8K]
On the 24th of June 2021 at night the Champlain Towers South, a 12-story beachfront condominium in the Miami suburb of Surfside, Florida collapsed partially. This collapse simulation was made based on the presently available data, eyewitness, and video accounts.
The authors are independent researchers and impartial hoping to constructively contribute to the fact-finding. This study demonstrates the collapse mechanism assuming the following plausible hypothesis:
According to the data, the basement deck showed signs of extended soaking for many years. The problem was locally insufficiently patched and not rectified in its entirety. The wetting caused the deck ceiling to be weakened to such an extent that basement pillars punched through the deck where additional load had peaked at the planter area.
The authors hope to not distress relatives of victims with the application of dummy dolls in this simulation that have the sole purpose of tracking victims in potential cavities within the debris.
Air pockets visualization followup: https://youtu.be/XkwHxVGKQKU
The Bullet-Constraints-Builder simulation software is open-source, it was developed within the EU FP7 funded INACHUS framework.
Kostack Studio was supported by Architect Oliver Walter with the data analysis.
Main sources:
https://youtu.be/KR29pLccutY
8777-collins-avenue preliminary-review-plans-for-40-year-re-certification.pdf
8777-collins-ave-1979-plans.pdf
8777-collins-ave unverified-inspection-report.pdf
Credits:
Simulation & video by Kai Kostack
http://kostackstudio.de
Consultant: Dipl. Arch. ETH Oliver Walter
Music:
Sergey Cheremisinov - Fog (CC BY)
Kevin Hartnell - Aurora (CC BY)
Made with Blender + BCB + Fracture Modifier
https://blender.org
https://inachuslaurea.wordpress.com
https://github.com/KaiKostack/bullet-constraints-builder
https://blenderartists.org/forum/showthread.php?343637-Custom-Build-Blender-Fracture-Modifier
The BCB structural simulation software has been developed at the Laurea University of Applied Sciences, Finland. Written within the scope of EU Inachus FP7 Project (607522): Technological and Methodological Solutions for Integrated Wide Area Situation Awareness and Survivor Localisation to Support Search and Rescue (USaR) Teams")
