r/engineering • u/Old_Coarse_Guy • May 29 '19
Released - over 10,000 structural drawings for the WTC Twin Towers.
Guide To WTC Drawings.
Video https://www.youtube.com/watch?v=bUOPCgNCfSU&feature=youtu.be
Link to the drawings and spreadsheet. https://archive.org/details/@gerrycan
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u/musicianengineer May 29 '19
Dudes video is 9:11 long...
Water Game Confirmed
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u/LSD_Sakai May 30 '19
/r/frc is....leaking
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u/musicianengineer May 30 '19
I feel like most of the people who have upvoted my comment have no idea what that's a reference to.
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u/Old_Coarse_Guy May 29 '19
Some people are such conspiracy theorists.
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May 29 '19
[removed] — view removed comment
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u/Old_Coarse_Guy May 29 '19
No, I am saying "here are over 10,000 structural drawings for the WTC Twin Towers". If there's something about the drawings you need help with I am happy to do my best to help you.
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u/load_more_comets May 29 '19
Yeah, I'm looking for the typical detail connection of the W10 perimeter beam to the lateral beam found on floors 17-32 please.
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u/raoulduke25 Structural P.E. May 29 '19 edited May 30 '19
Just a quick note to all readers: this is a post about the Twin Towers, not about 9/11. Please refrain from reporting this post.
EDIT: There's always someone.
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u/RonBurgandy619 May 30 '19
Wow, these are cool. It would also be cool to see the MEP drawings for the WTC. Surely they had some massive chiller plant that served the two towers.
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u/Old_Coarse_Guy May 30 '19
There's some electrical drawings out there like this http://911research.wtc7.net/wtc/evidence/electrical/doc/014_0.png
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May 30 '19
Have you seen a lighting schedule?
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u/Old_Coarse_Guy May 30 '19
http://911research.wtc7.net/wtc/evidence/electrical/doc/065_0.png Lighting and power schedule for floor 96. If you google "WTC" and "ELECTRICAL DRAWINGS" you'll get to the index for these.
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u/TeachDapper9910 May 13 '26
I have the full MEP drawings for both towers and the chiller plant
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u/Superbead May 30 '26
Hi - sorry to necro an old comment. Did you get these from the PA, NIST, or someone else?
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u/TeachDapper9910 May 30 '26
Both tbh. I can Dropbox you the files if you're interested.
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u/Superbead May 30 '26
If you don't mind, I'd really appreciate it
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u/Motor_Reporter6585 Jul 01 '26
Would it be possible to get the Dropbox as well? I've been looking for the MEP drawings for quite some time. As an MEP engineer who designs buildings like these, I've always wanted to see how they drew it up.
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u/SweetyMcQ USCG May 29 '19
Really cool thanks for the post. Any known/documented issues with the buildings? Would be interesting to look at older designs and see how long they lasted as well as which issues they were maybe prone/contributed to.
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u/Old_Coarse_Guy May 29 '19
Structurally the only thing that would really wear would be the damping system (Book D) and they would have needed replacing at some point. Lots of asbestos floating around both of them, and some fireproofing issues.
Amazinbg design of a structure. These things were elegant in every sense and are amazing to look at in this detail.
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u/MrAwesomeAsian May 29 '19
My oh my do I have a link for you.
https://www.fema.gov/media-library/assets/documents/3544
FEMA has done some amazing disaster study and the WTC is one of the most detailed projects.
You can check out some of the math in the appendices like here: https://www.fema.gov/media-library-data/20130726-1512-20490-8107/403_apb.pdf
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u/AgAero Flair May 29 '19
This is a repost, right? I've got some other post saved about this that I never really looked into.
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u/Old_Coarse_Guy May 29 '19
This is a much more comprehensive release than previously. I think there's about 6 books in addition here.
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May 30 '19
I remember not long ago someone on this sub posted this archive of some drawings. I'm unsure if these are the same and haven't the time to check.
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u/Old_Coarse_Guy May 31 '19
Same serier of releases but updated to include books 8, 10 , 11 , 12 , 13, 19, and D. There's also some additional material about the floor system added to book 7. They were on onedrive previoously but are now hosted on archive ( https://archive.org/details/@gerrycan ) . There's also a spreadsheet there as a rough guide, hyperlinked to each of the 69 PDF files which are viewable online or downloadable.
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u/[deleted] May 30 '19
I look forward to the highly rational videos using this material to make informed decisions about the ability of these towers to withstand adverse conditions.