Surfside Condo Collapse Site View NIST Video Ground Zero

In this video, we study the NIST update from ground zero of the Surfside Condo Collapse Site and we analyze what this NIST Video of the damage and site tells us. We also overlay our map on their view of the garage floor to show you exactly what the current condition and location is of the important columns and parking space for you to see what really happened that fateful night.
⛔⛔ Official Surfside Support Pages, only send aid to vetted support sites! There are scams related to disasters, you should avoid unvetted fundraisers.
⛔ Support Surfside: supportsurfside.org/
⛔ GoFundMe Official Vetted Pages for Donations to Surfside collapse victims: www.gofundme.com/c/act/surfsi...
The Champlain Towers South condo complex collapse was located at 8777 Collins Ave. in Surfside, FL, which is just north of Miami beach.
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[@MashaRistova]

Wow, this video is the first I’ve heard that the architect who designed Champlain was suspended from the board in the 60’s for a building that failed in a hurricane. That’s an incredible nugget of information. Love these videos. They are so informative and I love all the visual aides you provide!!

[@jmcenterprises9591]

That is quite an analysis Jeff. The rebar is so densely packed in those columns. Your overlay really helped t understand the photo. Thanks for your work on this.

[@TheBloodOfJesusChannel]

EXCELLENT job Jeff!! We now know what really happened regardless to what trolls or even other supposed engineers have said!! Yours is exceptional and thorough....proving your point each video with no reason to make anything up or cover up anything!! Thanks!

[@jeffostroff]

thanks JMC, worked on this video for 17 hours one day and 8 hours another day

[@jmcenterprises9591]

@@jeffostroff amazing work, very detailed. your attention to detail is better than the investigative journalists.

[@manikaggarwal2018]

@@jeffostroff you are a rockstar

[@weaselworm8681]

Everyone else is starting to tire of following this story. You’re still the best source of new developments and reasonable speculation. And it is the educated speculation that makes you unique and adds value to us laymen. Thanks again.

[@jeffostroff]

Glad to help Weasel!

[@7YBzzz4nbyte]

@@jeffostroff Yes, it's factual and interesting. Other videos seem to speculative 👀 ...

[@ericmoore571]

People need to pay attention. Think how many other buildings there are out there with this degree of neglect and poor construction. This tragedy is a loud wakeup call

[@d.e303-anewlowcosthomebuil7]

@@jeffostroff please test the concrete. It is powdery looking, and doesnt stick to the rebar correctly. If so that is the original problem, besides the crook who built it.

[@d.e303-anewlowcosthomebuil7]

@@jeffostroff bad concrete?..it looks sooo chaulky, and it doesnt stick to the rebar in the normal way. Also, is there any pebbles in it? I dont see any.......incorrect building methods, built to minimum, paid off inspector?....planter box added later with no extra support....rust and rot ( lots of water leaks for years).....undersized columns.....what did i miss?.....bad maintenance, too much cost for condo owners( $200k each?)...engineer and co. inspector paid?, to not scare people( reduces property value $200k ea.).......etc..... .... So, no one could just put up some shoring underneath the pool deck, remove the planters, demo down to solid concrete, add structural crete to the deck, and lots more strength to the posts?.....i just shake my head....

[@aday1637]

Having been in the building trades, I can attest to the fact that 'inspectors' often don't look at the work at all prior to signing off on it. I can give specific examples of this over the years where the inspector was too lazy or too busy to actually inspect during various aspects of construction. Having rebar stacked together as shown in this video is one possible outcome of lack of inspection. Prior to forms being put up an inspection signature is needed that okays the rebar elements. Once a signature is obtained the builder is free to form up and even pour concrete over the rebar. None of this is a surprise to me. The only surprise I have is that there haven't been more collapses such as this. Like everything else, the process was corrupted somewhere and the result is the death of all those people.

[@remotecontrol1082]

Sadly, I think you are right.

[@russell3380]

I saw the same rebar get inspected over and over. As soon as the inspector left it was moved to the next pour right before concrete. I wish that was all I saw, lol.

[@kate2create738]

I've heard stories of how those in the building industry can have a moment of let's say favor-ability, to the point that the inspector doesn't bother to do their job to inspect because they think the builders got it.

[@russell3380]

@@kate2create738 And maybe they sign because of cases of whiskey or bundles of 100's.

[@somebod8703]

A few weeks ago a friend of mine said something about the "frozen food effect": That most people working in this industry recommend not eating frozen food, because they know what's going on there. And that this kind of effect is basically everywhere: Structural design, IT security, medical devices, nuclear power plants. The list goes on and on. Until now, I have never met an intelligent person working in a safety-critical field who actually believed that inspections and safety were taken seriously at their workplace.

[@babybirdsmommy1]

So informative, I'm obsessed with this, you and Josh are great explaining this stuff in ways we can understand

[@jeffostroff]

Thanks Dana yes Josh is awesome also

[@voodoosue666]

lol i am obsessed with jeff's videos too. i love watching his break downs, he so informative ,, great job @jeffostroff

[@ldhawthorne]

The minute I saw that NIST was releasing video yesterday, I was hoping you were going to put out a video explain everything! Thank you!!! You are so knowledgeable and we really thank you for all of your work!!

[@ladythunderbird1483]

Yes you make an excellent explanation of what probably happened. You make perfect sense, that’s why your rivals mock you because you’re the best!

[@jeffostroff]

Thanks lady thunderbird

[@shinyhappypeople9043]

I’ve enjoyed your videos and building integrities videos. That you two have slightly different ideas at times is perfectly fine and perfectly normal. Will be really interesting to see what the final reports say. Both of you Ms,r me regret not doing an engineering degree. Love the informative fact finding mission and the way both of you teach.

[@jeffostroff]

This is the next best thing to an engineering degree

[@gracieg7601]

My brother in law had a big patio sitting on the back of his lake house on the side of a mountain. My husband was a aero space design engineer and his brother who the house belonged to was a commercial plumbing contractor. So the first time Bill and I went to the house, my husband said who did the structural analysts of your patio hanging on the side of the mountain ? When his brother said I did it myself. My husband said oh no. Lol but so far as far as I know it has held up just fine. I don’t know of any issues he’s had or not it was built before my husband died and it was 20 yrs since my husband died so since I don’t really associate with them much anymore. I still dovt know what has happened to that house and patio? Lol

[@gracieg7601]

Jeff - Do you know why they attached the pool deck to the building? They could have made it look attached on the deck side top But made its own supports under near the building to give it under strength. The deck had so much heavy stuff on top. They must have not taken that kinda stuff into consideration when the building was built. Sad. Just a little bit more care could have saved allot if troubles.

[@johnbergstrom2931]

@@gracieg7601 Well, you just asked the million-dollar question... A little extra effort, a bit more money, a few more columns in the garage and we would be having this conversation. The building would still be standing and those 98 people would still be breathing. Also, proper waterproofing of the pool deck would have helped. A lot of corruption back then and this Nathan Reiber was allowed to build this deathtrap so he could get rich. Built a lot of other buildings in S. Florida, too. I wouldn't feel safe if I lived in one of his condos. I'd consider even ditching my investment...

[@TheFlatlander440]

Interesting video Jeff and it just reiterates what you've been saying all along. Looking forward to some conclusions down the road but you lay out an excellent point about the stacking rebarr and concrete loads. Thanks for sharing and get some rest.

[@c.l.proudfoot8853]

AGREED!

[@jeffostroff]

I know man I finally got to bed a little after 4:00 a.m..

[@lifejourney48]

Agree

[@richardc1983]

@@jeffostroff You can also see the columns 9.1/10 rebar leaning towards the pool area so as the initial columns collapsed the weight above made them lean. As well as the columns you pointed out with rebar too closely packed if you look to the right of the still picture at 2:55 you can see it is also the same where only part of the concrete has come away.

[@richardc1983]

@@jeffostroff Forgot to ask, could you do a video showing the drainage as I see in one of the stills where we are on the ocean side of the bathub wall a large round pipe going through the wall. Where also was the sump drainage that the water on the garage floor drained into.

[@rollothecat2010]

Thank you Jeff for another video on the tower collapse. I have been missing them. I am becoming obsessed with this tower collapse. I am too old to go back to study and get a degree in engineering. (I have one in math from the 1970s.) GD, construction engineering is incredibly interesting. I wish I had been brave enough as a young woman to switch from math to engineering or perhaps to go for a double major, math and engineering. I love listening and watching to this stuff about engineering. Josh Porter's last video concluded the building as built and modified was at 99% weight load bearing ability right from the start (when initially built) based on hid his calculations. He said that this was because of poor engineering when changes were made to the original design. He did not name names but I felt, based on what he said, was that the developer's engineer in charge of the changes made to the original plan was remiss in doing his job. Oh, you know Josh !!! You two are my favorite making these videos.

[@moniquem783]

You’re not too old to go get a degree in engineering. You must be in your 60’s ish right? What you are too old for is to begin a career from your new degree and earn enough to pay for your tuition before it’s time to retire, unless you’re planning to work into your late 70’s/80’s. But if you want to do an engineering degree just for fun and can afford it without having to work until the day you die, go for it! You’re never too old to fulfil a dream!

[@rubyoro0]

I mean KK is so bored she wants to be a lawyer.

[@Dilberto88]

William Friedman as a result of his 1967 suspension, became a cut-rate Architect that Nathan Reiber could afford. If Yelp was around in 1979 - Friedman would be a two-star Architect and Structural Engineers Breiterman Jurado and Associates would be 3.5 stars. Reiber simply did not believe in paying full price for anything, according to my friends parents, who knew Nathan Reiber well.

[@MajorCaliber]

GOLDen comment. OTOH Reiber was all too typical of the 1973-1996 Shabby Era.

[@MashaRistova]

Sounds like any buildings Friedman was associated with designing that are still standing should be looked at present day to see if they’re actually safe…

[@johnbergstrom2931]

Don't forget about the City of Surfside inspectors Reiber bribed.

[@KweeLewis]

Thank you, Jeff, so much for your brilliant overlays. It helped me clearly understand what i was looking at in the photos, and match them together with the drawings. Excellent evalution and video.

[@jeffostroff]

Glad you liked it Rebecca

[@m.t.valenciatrading]

I think I'm an engineer at heart because I always struggle listening to halfwits explain things... but you, however, explain things as I think they should be explained. Great video.

[@scott7119]

Down the street from where I live, they're building two apartment/condo buildings. As I pass them - I look at the concrete base support columns and I'm like "those are too small, no caps", no longevity. Mind you, I'm not a person with any technical background in construction/architecture, but you have made me aware of the construction process Jeff and have given me an inquisitive eye toward 'foundations 101'- thank you for your knowledge and insight. (They're probably just fine but after the Surfside collapse, I am suspect of all large scale construction).

[@psrwhite]

I just watched a video by Sam of Building Integrity. He interviewed a real estate agent who spoke on what info prospective condo buyers should seek out before buying a condo. You just gave additional awesome advice: "find out who designed the building originally and what are their qualifications." If I were having my own home built I would certainly investigate the qualifications of who I hired to design my house. A background check on the original architect of this building may have revealed his prior suspension and issues with buildings designed by him in the past. I certainly would not have hired him to build my house. This info is valuable to anyone buying a condo as well. Thank you Jeff for bringing that up. Keep up the good work.

[@carolford6589]

Thank you again for including us in your most recent thinking about the collapse and for your videos! Because I have so much confidence in you and your integrity, your videos about this are the only ones I am looking at on this topic.

[@jeffostroff]

You are so welcome!

[@keepthepeacegoingbylovinge4883]

That other guy was starting to sound like a hysterical idiot. I had to unsubscribe! Jeff your explanations are well explained especially for a non construction person as myself. Thank you

[@jeffostroff]

Glad to help Ruby

[@BIOHAZARDXXXX]

Same here, the more I listened to him the more I realized he's a wacko

[@kineahora8736]

Me too. Months ago I was watching Jeff, Josh’s Building Integrity channel (which is excellent), and that other channel. I never subscribed to the other one because the guy sounded a little nutty and kept going on and on trying to “sexualize” reinforced concrete. Next thing I know-he’s going crazy slinging mud at Jeff and Josh how they stole his ideas whatnot.🙄 I far prefer Josh & Jeff.

[@terry94131]

@@kineahora8736 Jeff and Josh have been great in explaining this so clearly and in a way that a layperson can understand. Also, they are not building models out of junk in the back yard. LOL

[@jeffostroff]

@@rl9808 yes!

[@barleyhops38]

Love your channel, and have wondered when you would post again. I really like how you backtrack to update/correct earlier as more information is know from previous videos for those of us that have been following! I LOVE that you and Josh are sharing information to help each other better your videos. KUDOS! Thank you! And hope you CONTINUE for a very long time covering this as I await your videos

[@Roger_Gadd]

Jeff, Thank you for yet another great educational video.

[@c.l.proudfoot8853]

Jeff, I really enjoy listening to you, very informative! And Thank you!

[@jeffostroff]

Thank you for watching also Carol

[@CatBrash]

thanks Jeff for this great teaching to us inquiring minds. I find your analysis of this the easiest to follow along with the most amount of knowledge. You are a patient and kind teacher

[@jonz01]

Great video as always Jeff. At 3:05 when you were talking about the 4 rebars being close together and saying that maybe that were squeezed together, if you look at the far right of that frame you can see 3 rebar with very little concrete between them. That place was doomed when the first load of concrete was poured.

[@russlehman2070]

It's starting to look like the real mystery is not why it collapsed, but why it took so long for it to happen.

[@niemi5858]

I dunno. Are we looking at the center of a column, or at the top or bottom? If it is the end of a column, then there will be splices of the rebar at these locations. A normal splice is for the 2 bars to be side by side and extend for 36 diameters of the rebar size. It would be interesting to find out where the ends of those bars are.

[@MajorCaliber]

If you look at the famous (and very useful) collapse video from the security cam at 87 Park, you'll see that the eastern-most portion (last to collapse) first swayed significantly towards the ocean (east)--pushed, I surmise, by increasing compression from the collapsing center section, trapped between the 2 shear walls--before rebounding and finally collapsing with a slight bias towards the west... anyway, that "running start" had to add greatly to the loading of that H-beam (and rather small stairwell shear wall), but after a few seconds of getting "worked" hard, they failed too. That smaller eastern stairwell shear wall, being the very last thing to collapse, was actually "spit out" by the eastern pile, and landed on the very top of the whole rubble pile, as can be seen in all of the day-after pics and videos. Wild stuff.

[@RichardCalk]

Thanks for sharing, Jeff. I've been following your condo collapse posts since the first one. You know your stuff and explain it very well in layman's terms.

[@jeffostroff]

Awesome, thank you!

[@CKWeatherford]

Jeff, I’m so intrigued by your videos throughout this tragedy. Thank you!

[@jeffostroff]

Thanks, I'm glad you liked it!

[@RCBIGFLYER1]

More great analysis. Thanks Jeff

[@Jewels1573]

Excellent, Jeff. I really appreciate how you have explained the locations and direction we are looking. Very few people can do this effectively and you do it well. You are also careful how you work things and when you realize you had concluded something in error, you correct it. That is also something not many people do. After reading some negative comments (i.e: M S) I was really shaking my head wondering what is up with that... Then I realized that there is a possibility that your videos reveal shotty (and maybe even criminal) construction and maintenance practices. No matter the naysayers, keep up the good work and keen eye.

[@jeffostroff]

Thank you so much

[@Funsho97]

Haters are gonna hate. Those trolls know nothing. You have done really thorough research ever since day 1. I watch your channel and Building Integrity exclusively when it comes to this condo collapse in order to make sense of it all and to get the straight analysis. Good job!!!

[@jeffostroff]

thanks Marty!

[@hildeschmid8400]

I never thought I would ever interested in engineering, Jeff, but you have made this so interesting. Thank you for explaining this so well.

[@jeffostroff]

Thanks, I'm glad you liked it!

[@toyaliens]

Glad to see more coverage

[@cathy8070]

Once again u r spot on. Thanks again for all your hard work❤️

[@kevinbyrne4538]

Beautiful presentation -- great job of analyzing and editing

[@johnmccrea8106]

Great reporting jeff. Thank you.

[@jeffostroff]

glad to help John

[@bettyk8152]

Great video as usual.

[@jeffostroff]

Thanks again! Betty

[@higbees31]

Both this channel and Building Integrities Channel are the only two I can get good information. Keep up the great work.

[@jeffostroff]

Thanks, will do!

[@higbees31]

@@jeffostroff There is a movie that I saw back in 1981 called "Condominium ". It is a longer movie that aired over 2 nights. With the high rise Condominium collapsing at the end. It is on KZbin under "Condominium 1980".

[@jeffostroff]

@@higbees31 I gotta check that 1 out thanks

[@kathym5307]

Very interesting. Thanks for the update, Jeff.

[@jeffostroff]

Glad to help Kathy!

[@pamfrank3962]

Thank you for sharing your knowledge

[@getx1265]

Another good video explaining things to us we'd never know about otherwise. Thanks for all your hard work throughout this endeavor! Interesting to see the overly dense use of the huge rebar at 3:05... a real eye-opener. You have done a beyond excellent job, Jeff!!

[@jeffostroff]

Glad it was helpful!

[@TheAzb7]

GREAT INSIGHT!! & THANKS FOR THE REFERNCE DRAWINGS...WOW HAVE DRAWINGS CHANGED SINCE THEN!!

[@Doodah911]

I like how you just point out observations but also keep an open mind and respect the ongoing investigation. Normally I'm not a fan of online blogs, but your discussion of the Surfside tragedy has been helpful, especially for a lay person wondering what might have been different between that building and any number of others one might be living or vacationing in. Certainly you've taught me a few things to be aware of that wouldn't be as obvious to a casual observer.

[@jeffostroff]

Glad to help Deborah!

[@kenhouse8857]

I appreciate your work!!

[@jeffostroff]

So nice of you Ken, thanks!

[@Christy-fv6bx]

I’ve been waiting for your video analysis!

[@jeffostroff]

More to come!

[@rollothecat2010]

I saw this at 1am and clicked on it immediately. More to come too. Thank you.

[@jeffostroff]

@@rollothecat2010 Wow sea turtle I wish it had been 1:00 a.m. when I was doing that premiere I'm sitting there at 3:30 a.m. starting at wondering whether or not I should do it at that hour I was surprised how many people showed up

[@rollothecat2010]

@@jeffostroff I live on the other coast. I am always awake at 1 am. A bit of insomnia plus my husband and I have snoring wars. So I stay up later and play on my phone. Then up pops your video and I was thrilled. That man who was harrassing you? His viewer ship has really dropped. I like you and Josh best.

[@catalinawoody6954]

Another great video. You lay it out so that us non engineers can understand and follow along. Thank you.

[@remotecontrol1082]

Jeff's explanations always make sense to me and I know nothing about engineering specifically, but there seem to be so many suspect areas that they probably all added up to this tragedy.

[@unrealii]

I love your analysis. I look forward to watching your videos when you post them

[@jeffostroff]

thanks so much!

[@davidguillory5260]

You do have a great work brother!

[@icucingme]

Please keep in mind that trolls are often other youtubers trying to bring your channel down to bring theirs up. Just delete criticism that is not constructive. They want to waste your time.

[@jeffostroff]

I love criticism I only delete negative negative comments if they have cursing in them. Trolls survey useful purpose here on KZbin it is called engagement old engagement and it actually helps our videos rank better

[@icucingme]

@@jeffostroff good point :)

[@ccdeville9717]

This was very informative. Thank you for clearing up some of that information .

[@jeffostroff]

than you for watching

[@fullraph]

Fantastic video as always! Keep em coming! I'm dying to know what happened.

[@kate2create738]

Really enjoy both your channel and Josh's channel from Building Integrity, both of you seem to know how to explain your opinions on the matter and your theories vary depending on what you guys find. It also helps both of you are respectful to each other, it would be fascinating spending an hour between the two of you speculating certain details of this event. Though, it's likely you guys spend days coming up with a different idea, it's now been about 2 months since this tower fell, and there is still things you guys find and thankfully keep up informed.

[@jeffostroff]

yes, whenever nist makes updates, those are good teachable moments for us to glean more updates and open up more questions

[@moniquem783]

Well, I hope everyone still living in the other towers sees this and gets out.

[@aday1637]

Quadruple thumbs up. Poorly designed, poorly built hunks of decaying concrete sitting on the sifting sands of time are an accident waiting to happen.

[@zaca211]

@@aday1637 Only going to see more of this. Stuff like this happens all the time in other countries and its only now starting to catch up to the US.

[@kineahora8736]

Idunno. I think this one being the first and in fact the very first Building the awful developer ever built and while the company was in financial distress, with a halt in construction and a change to the pool deck design in the midst of all this chaos, makes this building a special case and I would not assume the other towers are necessarily in this kind of danger…

[@moniquem783]

@@kineahora8736 aren’t there 2 more towers that are exactly the same design, constructed by the same companies straight after this one? The only thing I see that was different about this one was that little patch of pool deck that was dug up to inspect and never filled back in.

[@kineahora8736]

@@moniquem783 no. The north tower is slightly different and it was completed after the developer got out of financial distress-there was no several month gap in the construction, and they got their act together a little bit (though they clearly sucked). The “East” tower that is actually between the north and south towers was actually built 10 years later and is more different than the north and south. Both the East and North were also maintained far better-which is not hard to do because South was so poorly maintained.

[@lifejourney48]

Thank you for sharing this video sending prayers for everyone

[@wightnoise3577]

Really struggle to see or follow your cursor when you are trying to show things on plans! Other than this, great videos and well presented. Thank you.

[@cathy8070]

Totally agree. Maybe next time u can use a coloured cursor.

[@lorettareyes8196]

Yes, Jeff should color his cursor for those of us not blessed with perfect vision as it's very hard / impossible for some of us to see where the cursor is when he shows all the drawings. We want to follow the presentation too!

[@jeffostroff]

It is very frustrating trying to work through this and deal with the cursor which I have highlighted and I have made it bigger but for some reason, when I'm using it on some of the programs they don't honor the cursor size in highlight that I made

[@MinaSaintLaRaun]

Use a laser wand pointed at the screen or just ur finger at this point...it is all very well done and i can follow you well..

[@guanacoyyz9646]

Amazing video once again!!! Thanks for bring this up to light \

[@jeffostroff]

Glad you enjoyed it!

[@ronniecardy]

Some very good video information. Good job on time spent. Doing this

[@bartmadness830]

Excellent video! Love your commentary and your voice is so soothing 👍🏼

[@jeffostroff]

thanks bart

[@bobtrevey3746]

Well done, thank you

[@jeffostroff]

No problem 👍

[@debbiegarcia9207]

Thank you Jeff for another great analysis. As always your videos are extremely insightful and your narrative style makes it easy for a non-engineering, non-architect and non-construction person like me to grasp the seriousness of how so many errors can contribute to a building collapse!

[@jeffostroff]

Much appreciated Debbie

[@dancohen9141]

This is a great video and you turned me onto Josh Porter stuff and it’s really fascinating and I would love to see you do an analysis of the plans like that as well

[@Ron32082]

Another great video.

[@rachaelzepeda5027]

You're so awesome jeff! I've learned so much since I first seen ur video on the Miami towers when u were walking around the beach an street where the collapse happened. Ur 100% better than any news or reporter. Love ur videos!!! Thank u for ur hard work and expertes. ❤🙏🔥

[@carolbell8008]

You are the best!

[@jeffostroff]

Thanks Carol!

[@Ron32082]

Thanks!

[@sbriks]

Appreciate the analysis..

[@jeffostroff]

thanks Sol!

[@patticake4681]

Great response Jeff. You tell 'em!

[@jeffostroff]

good to see you back Patti Cake

[@michaellefevers4248]

Excellent work!

[@jeffostroff]

Thanks, glad to help Michael

[@michaellefevers4248]

Actually Jeff I've watched your videos on this since the beginning and each update and the way you comb through things is amazing. Everything is layered, everything thought out. While its truly a horrific event, the science behind tracking down the root cause is incredible!

[@nssherlock4547]

I have a theory, I wonder if the automatic irrigation to the planters was adjusted to flow less, once the large palms were removed, the new plantings would need way less water. Did the palms roots get into the waterproofing layer, the pooling water on deck looks like it's coming from the planter/s.Once the water gets under the waterproofing, it can track anywhere and sit for years and cause corrosion in concrete and rebar.

[@jeffostroff]

These are good questions, we have raised them before, as well as was there any drainage at all designed into the new planters that were installed in 1996.

[@JR1300r]

I am a ex high rise plumber The watering and drainage of the planter boxes most definitely could be a issue causing damage to the structure It was my first thoughts at the beginning of this terrible situation ... RIP good people

[@RealButcher]

Thanks man, very interesting. Getting even more interesting in time. Those rebar packed together, wow.

[@jeffostroff]

Yes quite the spaghetti bowl

[@radarking9857]

Very good analysis...

[@jeffostroff]

thanks EZ E

[@jackzipf681]

Excellent, succinct review WELL DONE, NO OVER THE TOP WELL DONE THANK YOU

[@johnhaikara7679]

You nailed it man, for sure.

[@jeffostroff]

thanks John!

[@physics4290]

omg Jeff, when do you sleep! I was watching your blocked A/C drain video early yesterday. Big help. Thanks, as always.

[@CatBrash]

i don't think he does, he is a machine

[@Deeked]

Love your videos

[@kenthekat9615]

Thank you for your continued analysis. I am sure many people appreciate your work. As a non engineer, I am interested in the cause and how I could recognize a dangerous building.

[@benefitthirteen]

Have you ever considered a career with the NIST? When I read they'd chosen their team, I looked for your name. As usual, incredibly precise.

[@DangerousGambit]

Thanks for the update its terrible what happened, I hope the people responsible gets life in prison for this. Someone needs to be held accountable. Have a great day and week my friend.

[@nataliedeshow768]

They might be dead by now considering this was built 40 years ago!!

[@hopefletcher7420]

No one will go to prison, as it's unlikely any laws were broken (or if they were back when it was built the statute of limitations is passed). From what I've read it seems almost everyone kicked the can down the road. The current Board was trying to get the repairs done, and got pushback from owners about the cost. I do wonder why it took from the time of the 2018 report until early 2021 to start work, but I suppose given the size of the building it would take quite a while to choose the contractors and get quotes. I do hope this tragedy will result in updated building codes and increased awareness from owners and management firms about the importance of maintenance and safety inspections.

[@DangerousGambit]

its unfortunate what happened, I tried to zoom in on the video and i think i saw a silouette of a person standing inside their apartment before it went down on the right side of the aparments.

[@ScarabChris]

One thing I find amazing is the garage floor is in perfect condition. With the building coming down so hard and massive chunks of concrete then all the heavy equipment clearing the rubble you would think the garage floor (foundation) would have been damaged. Looks like not even a chip from the floor. Looks perfect and smooth.

[@rubyoro0]

Ikr. But maybe there is cracks we can’t see unless we’re up close.

[@gordonrichardson2972]

My guess is that all the parked cars acted as shock absorbers. Steel is incompressible, and can support a lot of load even when flattened. Also flat slabs would have limited impact on the floor.

[@shellybrown6075]

I have watched Every ONE of your videos and Building Integrity’s since the collapse and it’s like watching a calculated horror movie. I’m a nurse and forensics have always fascinated me but adding engineering to the investigation has been fascinating 🧐 will continue to pray for the families as the investigation moves forward. Thank you for bringing the human side and science to help us understand

[@jeffostroff]

glad to help shelly!

[@sunnygirl87]

Thank You.

[@jeffostroff]

thanks you for watching

[@helengarsed3979]

From Australia and I had not seen anything else about U Videos for a long time as been Watching another Video that He is getting very close to what made this Building Collaped. So Goodluck with u showing the People of what U find ??😇🦋 Just came across this as thought U had Given Up !!Like Jacob and Mike BELL!!

[@jeffostroff]

Glad you came back for more!

[@aday1637]

Jeff, your video's on this are great and very good at explaining the various aspects that I have not heard anywhere else. For instance that the architect was suspended at one point for building failure at another location. I've said all along if I were a builder and tried to follow these drawings it would be impossible. The design is the cause of the failure. It can easily be shown. Now whether NISC will come to that conclusion is another story. Afterall, they are governmental and have a vested interest in non-reporting of this stuff. I've seen stuff like this in other buildings and it's the reason I don't go into high rises any longer.

[@ronaldfharring7326]

I believe it's the National Institute of Standards and Technology, NIST, which is investigating the Champlain Tower collapse. This will help us better understand and, hopefully, avoid similar failures in the future. Conspiracy theories about "vested interest in non-reporting of this stuff" does not contribute to our understanding of the root causes of this tragedy.

[@KB4QAA]

AD: NIST no interest whatsoever in the building. They bear no responsibilitly and have never had any connection to it. They are a technical agency and have absolutely no reason to hide anything they find. Conspiracy theories are a sign of fearful minds.

[@stephenwright5695]

Have been following your posts and find them very interesting and informative. Makes a whole lot sence to a none engineer person

[@jeffostroff]

Awesome stephen, glad to help

[@glenschumannGlensWorkshop]

Thanks

[@jeffostroff]

Thanks, glad to help

[@RGJubilee]

Love your videos on this you are so gifted in knowledge. It makes me think how safe is the buildings we go to every day. What about the sister condo next door how safe is it? I hope all the people moved out of it for their safety.

[@bonegrubber]

Yes the rebars appear crowded, however code does allow bundled bars where they can touch(See ACI 25.6). I agree that there doesn't appear to be adequate overlap of individual bar sets. I'm guessing the final report will give the area of steel required and state if columns and beams met specs

[@jeffostroff]

Yes I can't wait to see what their engineers finally come up with and release in their final report it probably won't be another year you're before we see it though

[@djahant]

Not seeing your pointer at approx 20 min and on. Great video Jeff. I get what you're saying. You are so good at this! Now I'm looking at every parking garage I see!

[@jeffostroff]

some programs don't honor my cursor with the highlight

[@djahant]

@@jeffostroff I wasn't sure you were aware. Thank you for the reply. Your insight into this disaster has been so informative. Pick another one soon! LOL

[@coldwaterjimmy7044]

As usual, your engineering expertise is greatly appreciated and provides a fascinating review of this engineering disaster (please ignore those trolls who slam you ... I, for one, apperciate your detailed reviews). You are kind of a "Structural Engineering surgeon" with the way you disect the drawings, images, and videos. Thanks once again.

[@jeffostroff]

thanks jimmy

[@charleso8826]

Thanks Jeff for all you do Shared to all SM

[@jeffostroff]

Glad to be but provided this information for everybody Charles

[@charleso8826]

@@jeffostroff & that's why I shared it to all social media = sm Jeff .

[@Losttoanyreason]

Another informative video Jeff. Nothing wrong with differing views if the evidence can support them. We will never know exactly, perfectly what happened. We can get close, though it will still be a best guess. Only however if we stick to solid science, engineering evidence, and facts. We simply were not there to witness the event from beginning to end. We must reconstruct as best as we can from the rubble and a few frames of video the most plausible scenario. Unfortunately, some people's egos are so very fragile that instead of sticking to being informative as you and another guy I listen to do, have taken to attacking those who have different opinions than his own. Keep up the good work.

[@brodriguez11000]

I imagine someone somewhere is modeling what happened based upon information at hand. That's one tool the original builders din't have.

[@SkipCody1]

Thanks Jeff, I have been watching since the beginning! don't let the trolls get to you. Super informative.

[@jeffostroff]

I appreciate that!

[@lostpony4885]

Bout time we got some new site footage to work with. Nice views Jeff!

[@jeffostroff]

I was going crazy waiting for them to release something

[@MrCpgallagher]

@@jeffostroff What about the on-site security camera images? Were they even working or just for show?

[@bettyesperanzabelalcazarco9537]

Me encanto el video por la utiludad que dan la reutilizacion de material y su estudio de duracion

[@mangographics225]

At 2:42 in the frozen frame, if you look to the upper right corner, your theory about the closeness of the ribar in the cement is clearly seen. Great video.

[@piyoweb]

Thanks for all these explanation. I'd have no idea what any of these mean.

[@jeffostroff]

No worries!

[@justaskin8523]

Thank you Jeff. It's nice that I don't have to rely on mainstream media for reasonable analysis. They're not equipped for that!

[@jeffostroff]

glad to help!

[@davewelch151]

I have mentioned this to you before on one of your other videos. I mention it now because you are dancing around the same area, pillar M10. Take a look at the BMA beam between M11 and M10, you can see it in the garage video. There is an 11" step up in the ceiling towards m10. BUT, the drawing set does not deal with the step for BMA. So, the attachment of BMA to M10, instead of being 5.5" + floor thk, is actually 16.5" + floor thk. The rebar in the BMA likely continues in a straight line along with the BMA bottom edge. This means that when the punching shear occurred, the tearing at pillar m10 was 11" deeper than expected, and the depth of tear was greater than the 16" square of the beam. If you are not following my explanation then let me know, I can provide the drawings and images to clarify. This drawing error or omission I believe is what dragged the building down at M10.

[@TimeSurfer206]

OK, we also have a variation of the Hyatt Walkway Bug, now, too?

[@davewelch151]

@@TimeSurfer206 What are you trying to say?

[@TimeSurfer206]

@@davewelch151 kzbin.info/www/bejne/jJ_ZeKp8msyVeZo&ab_channel=TomScott The Hyatt Regency, Kansas City, Missouri, July 17 1981. A suspended walkway collapsed, killing 114 people and injuring 216 more. In a nutshell: The original design called for two walkways to be suspended from the ceiling. By a single, unbroken rod, with each walkway attached by a hanger to the rod. Apparently the contractor didn't have rods long enough, so they used two rods: the first to hang the 4th Floor walkway from the ceiling, the second to hang the 2nd Floor walkway from the Fourth. It was ran past the On-site engineer, and apparently, he signed off on it. Missing the fact that, although the hangers etc. were selected with more than enough capacity to hold up Each walkway, they were not able to hold up BOTH. So, the hangar on the bottom of the top rod "Respectfully submitted its resignation." Thus: A seemingly minor change, that results in far greater stresses than anticipated. I hope my nutshell explanation isn't too far off... and can actually be understood.

[@davewelch151]

@@TimeSurfer206 Yes, I have seen the documentary on the Hyatt collapse, the welded C-sections. I just wondered why you mentioned it to me. Sorry you had to write such a lengthy reply.

[@TimeSurfer206]

@@davewelch151 I'm not. It alleviated my boredom for a few minutes :P

[@RonHelzer]

That "C" shaped (actually, more like an "H") transfer beam, was due to the column line above is shifted. Near the center of the "H" was the support for the column above. Failure of support under that transfer beam structure, could have been the beginning of the collapse of the briefly remaining eastern portion of the building?

[@athgt6630]

The beam probably was strong, as it is right at the beginning of the portion of the building that stood up for a few seconds.

[@lennysalvo6734]

Exactly. The mess with the grid lines is classic inconsistency between disciplines. EOR seems to used a different layout probably to make his analysis easier to follow as architect used a less grid lines and their own inconsistency was surprising.

[@MajorCaliber]

@@lennysalvo6734 Say it with me: "Fawkin' awk-i-tects!" Put 'em all on a barge, along with the lawyers, and give 'em just enough fuel to get about 15 miles out into The Gulfstream... muh bad. ;')

[@ronaldfharring7326]

@@MajorCaliber What a cynical view. Architects bring vision and art to the structures we create from the pyramids to the Taj Mahal to the homes we live in. Engineers bring the architect's vision to life while complying to engineering standards and building codes. Regretfully, rules, standards, and regulations can not always protect us from poor judgement and sloppy work.

[@jeffostroff]

@@MajorCaliber yes!

[@johnmoruzzi7236]

Very informative.... I think for the column IDs you should just go with what makes sense from the aspect of the first 2 levels of the building (garage, lobby). Because that’s where the action was and above that there were changes in some columns. It seems pretty clear that the initial failure was that added planter that collapsed its column sideways and gradually unpeeled the nearby overground parking (as observed) followed eventually by the building column connected by the beam.

[@athgt6630]

Thank you for doing all this research and another great video. I imagine the original architect has already passed away? Would be good to have him around to give some explanation...

[@careyprince811]

Code change over years are you using codes when the building was going though planing or presentvday

[@nicholasconder4703]

Very interesting video. I think one thing that is telling is that (if I understood you correctly) the architect who designed South Champlain Tower was suspended for several months for poor building design PRIOR TO his work on this building. And the building also collapsed (in that case it was due to a hurricane). Also, I concur that the rebar is much too clean, which calls into question either the concrete used or the pouring of said concrete. By the way, it is also good to hear you and Josh at Building Integrity are communicating. Between the two of you I think you have given very complete explanations as to what caused this tragedy. Keep up the good work.

[@jeffostroff]

Thanks Nicholas. The architect's failure was some type of sign support on a building that failed during hurricane Betsy. was suspended for six months in 1967 after pylons on a sign atop his designed building collapsed. The Florida Board of Architecture found that his pylons were “insufficient and grossly inadequate,” and failed to meet “accepted standards,” he was found guilty of “gross incompetency, in that he negligently, improperly and carelessly” designed the pylons. He appealed the decision but lost.

[@nicholasconder4703]

@@jeffostroff I hope the City of Surfside and other communities are reviewing ALL the buildings and structures he worked on. The fact he worked on two structures that have failed raises some serious questions about his competence as an architect. As well as possible issues with the firm he worked for.