Jiggy-Z

Looks like a double mat at the column, but yeah, no hidden beam rebar up in there.

My first classical guitar was a Cordoba C5, what a piece of shit.

The stripped area looks pretty thick there between the paint (10" or so) . Perhaps they dropped the slab around the column. No need to have a 10" parking deck.

Would Skoal work for such a thing? Asking for a friend.

You're just a regular MacGyver aren't you? The old one, not the new one.

Meanwhile, in a foyer in Northwest Hills:

Na, just kids having fun in the summer.

A lot of fawning over a dead deer. I'll see myself out.

You could not pay me to work on that site. the whole thing still looks sketchy as shit.

Can you dust for poison?

OK. Whats going on in these pictures?: Before. Look at the parking garage area in the left foreground. The columns appear to be painted or bare concrete washed by the sun. Now look at the same area after the collapse and some demo work: From the preceding two pictures, it appears that there was a parking deck above the white portion of the columns both at the intact building and at the pool deck. In the first picture you can even see where a car fell down to the below deck farther back in the intact building structure. It looks like the parking deck just fell straight down as did the pool deck. So straight down that cars and pool furniture were not mangled. The collapse video does not show this area clearly, but just behind it is where the first section of main building started to collapse. The pool deck area is where there were problems from the engineering report. The collapse of the second main structure might have caused this area to pancake when its debris hit the parking and pool decks as well. Looks like the tenants in the standing structure were dammed lucky that the collapse stopped at just a portion of the upper deck parking/pool deck area. Now look at the whole pool deck area: It seems odd that where the second collapse came down on the pool deck, the deck collapse stops at the edge of the debris field, yet where the building did not come down by the top (passed the still standing umbrellas), the pool deck and parking structure nevertheless collapsed without direct hit.

Had an acquaintance in college drink beer from a (his)Bass topsider. He was out for two weeks after that with some kind of nasty stomach infection. Imagine that. What a dumb ass.

Pool deck still standing.

Yes. It has been discussed here with citations of similar overload cases and was my first guess based on overhead video footage not showing some gaping sinkhole. However, based on the preliminary security video footage, it sure does look like the action started at the bottom-so thinking shifted to sinkhole, water table, or some other kind of subsidence. It will be interesting to see what the engineering investigation finds and what kind of issues,if any, were noted prior. We see spans, bridges, walkways, tunnels and buildings under heavy repair or construction have catastrophic failures pretty regularly around the world. I don't recall anything like this that came on without warning and was so sudden and almost precise in its failure. I mean there are plenty of buildings that fall down but most of the time some flaw is noted, evacuations occur, the situation is monitored and it either collapses on its own or is demolished.

A lot to unpack from previous post. So seems like a problem was known. But to answer your question. Unless you live in a seismic area or have a really awesome building owner, then no there would be no general reporting going on. In this case, reporting would likely come from a tenant reporting spalled columns and shifting walls, as the article says.

I amended that position once I saw a second video. I did not see any pancake from the top. Looked like a failure from the bottom. However, the possibility remains that a pancake could have occurred on the opposite side from the video and then looked like a bottom up failure from the video vantage point. Just seems like a bit of a stretch given the video. I mean look at it. The building looks almost intact going down. The lights even stay on for a couple seconds.

On second thought, it sure looks that first collapse did not start at the top and pancake its way down.

It just takes one weak link. From my mundane CSB case files: We built an enormous detention pond in San Antonio with huge concrete walls. In order to have access into the pond for cleaning and future debris removal and servicing, we built and additional triangle/ramp shaped wall parallel to the long side of the exterior pond walls. The earthwork contractor back filled between the walls and we poured a ramp on top of his backfill. Pretty simple. Normally when using select limestone base as back fill, very little work is required to get passing compaction especially when properly moisture conditioned beforehand. We have passed densities without even using a roller on occasion. So months later I was shocked when the ramp paving failed. They tried to pin it on the concrete, but all of our stuff was inspected and tested. Upon further inspection, the base material that was installed was so loose that voids settled leaving a cavity below the paving which eventually failed. Earthwork contractor did not have his stuff tested, and if he had it would have failed. So they had me fix his work and redo my work, for a nominal fee. I made it especially painful for the earthwork contractor since it would have been so easy to do it right the first time.

...and it might be awhile before all are accounted for. Even if they are accounted for it might be months before they are recovered given the potentially unstable nature of the remaining structure. In the Hard Rock collapse, there was a construction worker who died whose legs could be seen sticking out of the upper structure. An effort was made to put some kind of tarp or plastic around the protruding portions out of some kind of respect for the dead, but wind and rain only wrapped the covering around the legs and further highlighted and offset his body. It was well over a year before they were able to get him out of there. Hard Rock was a unique case since there were historic structures very close by and a couple of tower cranes that had to be control demoed to avoid further damage, plus New Orleans. I would think that this structure could be shored up and demolition could be done fairly quickly after the investigation as long as there is no underlying sinkhole or other geotechnical anomaly.

From the Wiki: The NTSB cited a design flaw as the likely cause of the collapse, noting that a too-thin gusset plate ripped along a line of rivets, and additional weight on the bridge at the time contributed to the catastrophic failure.[6]

Does not appear to be a sinkhole from other video footage, but who knows. Two recent collapses: Minneapolis Bridge over the Mississippi and Hard Rock Cafe in New Orleans had ongoing work at the times of their collapses. The Hard Rock collapse appears to have been partially caused by heavy point loads from a scissor lift and improper reshoring along with a not fully cured concrete placement. i don't remember exactly what happened in Minneapolis, but it was related to ongoing work. Not saying this is the case here, but there was roofing work going on. If materials or equipment were stored that was too much for the roof, it might have caused the pancaking of the first section that fell. Its hard to tell if it started in one section and then spread. The second section appeared to be leaning inward after the first section went down, probably from the undermining of lower columns and deck structure from the initial collapse. Just my initial thoughts. I am not an engineer, but I am a concrete contractor and have done multi story cast in place buildings.

The sea was angry that day, my friends.

That was their selling point to get it built, since they had no 20th century earth $.

Well first off, there is nothing wrong with yoga. I know little about yoga, but I know that it gets my whole body moving, and I have not gotten injured from it and i feel better after doing. That being said, it is like anything else, that you need to practice it regularly to get the benefits from it. Also, it is not straight up mobility work. My rock gym has classes and that is what I would be doing if I could in lieu of walking all of the time. The separate studio stuff is not for me. I have been disappointed with ortho docs and PT over the years. Basically I get injured, go to PT and it improves a little bit, but I feel like the root cause is never addressed or at least really rooted out as something that can or cannot be fixed/improved. Mobility is defined as what range of motion you have unassisted or active as opposed to flexibility which requires assistance to get into end range of movement. Flexibility is generally much easier to improve than mobility. Often times we have the requisite flexibility to do certain movements but lack the muscle control to execute on our own with out assistance. Compounding the problem, is that often weakness in one area (say shoulder) translates to issues/pain elsewhere down the chain (elbow) or downchain weakness in the wrist can also cause problems with the elbow. Or the weakness could originate in the back or the hips. So it can get pretty complicated real quick even if you are an MD. So for you, I would address any acute pain right away by stopping the things that are causing it and get on top of it with a few days of advil or aleive. In the meantime do some low impact activities and try to improve your diet. then you can start with mobility work. There is a ton of info out there on the net and some of it is very good and will work. The problem I found was that I could never just get it all in one place and keep to a schedule. Mobility work is slow and unpleasant and seemingly unrewarding compared to gaining quick flexibility, or losing weight, or gaining some pull up reps. So you can feel like you are floundering even when you are not. If you have enough discipline and research skills the info is out there and you can do it, but I could not keep with anything long term enough to work until I got in a program. The one I use is Precision Movement. They have a ton of free stuff on YouTube to give you an idea of what you are dealing with. Even that content I found was just like all of the other good mobility stuff on the net, stand alone and not full integrated subject to loss of momentum after a short while. I went ahead and splurged on their full Academy rather than on any individual classes since I have so many areas to work on. The full Academy was $400 and it will take me a couple of years to work through the Control series. There are additional flexibility series and and strength classes included as well and those would take another 2-3 years to work through. There is good support and forums and such but I have not needed them yet. They recommend you only work on two classes at one time, but I have dabbled in up to three and eventually dropped back to two. I have been at it seriously for almost 4 months and I am not healed fully ( i started with climbers elbow in both arms, a wrist issue, and a shoulder issue-these were my hot button problems but I have others) All have improved greatly. In fact just yesterday I took down 6 trees from the freeze and was picking up heavy boulders for transport in a wheelbarrow. That work would have normally left me sore and with a backache or neck pain and I have none. In fact while I was doing the boulder work I could feel the power and control in all of those formerly unused muscles in my shoulders, yet it was not about physical strength but control of motion and proper activation. It is kind of weird to explain, since that was the first time I did anything really physical in months. My left elbow was sore but my right was not. Wrist felt great and that has been bothering me for a over a year now. I intuitively feel it is not ready for climbing, but I am on schedule in about a month. I am about 4 weeks out from finishing upper limb control and shoulder control. After that I will probably shift to back and hips. after that lower limb and something else. Hope this rambling diatribe helps and makes some sense. Any specific questions?

I am the same way. I like for things to work and be constantly positively reinforced either with progressive weight loss or failing that temporarily, increased performance in chosen endeavor. I too never really have paid for a program until I got on a complete scheduled mobility program. The only downside is that I can only work on two areas at a time and each area takes 12 weeks, but it is all scheduled out with some flex time and there are how to and follow alongs. I have set up a log book and printed out and taped the schedule and routines into the book for reference an portability. There is just something about having actual pencil and paper to keep track of things rather than have it all be logged into an app or whatever....kind of like porn, I guess. Anyway, mobility work sucks, so it is nice to have a guide and some extra motivation, like in a paid weight loss program. One thing that has helped me and I think will help you too, is not to limit your goals to just one type of performance goal. In my case, I had multiple upper limb injuries, so I got into mobility work to reprogram things and started walking and eating better. Injuries are healing and I am losing weight but it is a struggle but I hope it will be worth it when it pays off with fewer injuries down the line and a return to sport. Sometimes you just have to shift modes. So when I get injured or fall off a diet, I can usually pick up in some other area that is somewhat unrelated. I have identified a few major pillars (for me): Mobility, flexibility, strength, diet, alcohol, sleep, stress, sport, and record keeping. All of these are pretty self explanatory, except for record keeping. Record keeping has been a real positive because it keeps me motivated and it has allowed me to realize that when I do falter, often it is not for as long as I think, or the gains lost are not as bad as I thought they would be and I can pick up right where I left off with only a few days until I am back where I was or even farther along after some unplanned rest. Case in point: Over the last few weeks when it was raining I had no desire at all to walk, so I didn't. I drank more than usual too but still kept up with my mobility work even doing a little extra. When I got a break in the weather, I had to go clear some limbs and do some chainsaw work-hey it all counts. In the end I gained six lbs over two weeks, but I got back to things and within a weekish I was back down that same 6 lbs, some of which was obviously water weight. The point is, once you start keeping track of things there are patterns that emerge so you are kind of prepared for setbacks which are not really setbacks at all. Sport is important too. For me it is why I want to weigh less and work on those other things. Sport, unlike working out, or dieting or record keeping or even sleeping is a hidden workout in disguise, except it is fun and does not feel like work. The more of that you can do the easier things will be.