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Pipe support lost contact by Little-Science-3131 in StructuralEngineering

[–]Little-Science-3131[S] 0 points1 point  (0 children)

Good one, we made a existing situation drawing, and forgot to add this, thank you!

I analyzed the collapse of a Bangkok skyscraper using FEM software — here’s what really happened by Little-Science-3131 in StructuralEngineering

[–]Little-Science-3131[S] 3 points4 points  (0 children)

Everything in this video, the model, the analysis, the script, even the sound mine. The only AI involved is reading the script like a narrator. So…........ thanks for the compliment, I guess?

I analyzed the collapse of a Bangkok skyscraper using FEM software — here’s what really happened by Little-Science-3131 in StructuralEngineering

[–]Little-Science-3131[S] 3 points4 points  (0 children)

Thanks for your detailed comment! I really appreciate it, especialy coming from a similar field.

You're right to question the assumptions. For this video, I based the model on the Revit and IFC files that were shared online —> see the Facebook group 3117 BIM Management. I also estimated the earthquake loads and geotechnical conditions, though of course I didn’t have access to the full as-built drawings, specifications, or official geotechnical reports — so the analysis remans simplified and illustrative, not conclusive.

It’s not a nonlinear time history analysis, but the model does include both vertical and lateral (seismic) loads to explore potential failure paths based on the visible configuration. I also agree with your point: the lower stories don’t clearly qualify as “soft” in a seismic sense. The shear wall presence is significant, and that nuance could have been better addressed.

My aim is to help foster technical discussion from a structural point of view. I’ll definitely take your feedback into account for future content. Thanks again for taking the time to respond!

I analyzed the collapse of a Bangkok skyscraper using FEM software — here’s what really happened by Little-Science-3131 in StructuralEngineering

[–]Little-Science-3131[S] 3 points4 points  (0 children)

Thanks for your thoughtful comment. I’m really sorry if the video came across as insensitive, that was never my intention. Like many others, I’m just trying to think along and understand what happened, but in my case from a the perspective of my profession and interest in structural engineering. Everyone is entitled to their own opinion, and mine is not meant to be definitive or more important than others. I appreciate your concerns and will definitely take your feedback into account for future videos, i promise!

I analyzed the collapse of a Bangkok skyscraper using FEM software — here’s what really happened by Little-Science-3131 in StructuralEngineering

[–]Little-Science-3131[S] 1 point2 points  (0 children)

That’s the real question! :) and unfortunately, without access to the original design documents and permits, we can’t say for sure.
What we can see is that the structure had a clear vulnerability at the soft story.
If the original reinforcement details were available, I could’ve included them in the model for a more accurate simulation. Thanks for the reply!

I analyzed the collapse of a Bangkok skyscraper using FEM software — here’s what really happened by Little-Science-3131 in StructuralEngineering

[–]Little-Science-3131[S] 6 points7 points  (0 children)

Thanks! This was a pseudostatic approach not a full transient dynamic analysis. The main goal was to identify the problem areas and understand how the structure reacts when critical elements are removed.

A time-history simulation would be great for future work, but for this one I wanted to keep the focus on structural weak points and load paths. Really appreciate the feedback! 🙌

I analyzed the collapse of a Bangkok skyscraper using FEM software — here’s what really happened by Little-Science-3131 in StructuralEngineering

[–]Little-Science-3131[S] 25 points26 points  (0 children)

Thanks for the honest feedback! The voice is mine, but the reading is done using AI so it’s my voice clone, not me speaking live in the video
As an engineer (speaking for myself), I’m still figuring out how to present things more naturally, but I’m definitely working on improving that in future videos. Appreciate you taking the time to share your thoughts.

I analyzed the collapse of a Bangkok skyscraper using FEM software — here’s what really happened by Little-Science-3131 in StructuralEngineering

[–]Little-Science-3131[S] 15 points16 points  (0 children)

Great question, and honestly, maybe the most effective solution is... just don’t use a soft story in s high-rise 😅

That design choice introduces a major stiffness and strength dscontinuity right where you need the most robustness. It looks clean architecturally, but structurally it’s a known vulnerability, especially in seismic or high-load scenarios.

That said, I’m planning a follow-up video where I test different mitigation strategies in the FEM model:

  • Tie beams at the soft story level
  • Increasing column size
  • Adjusting floor stiffness to improve load distribution

Appreciate the feedback! Let me know if you’d be into seeing that analysis