HOW Will They Move Key Bridge Off MV Dali Ship?
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- čas přidán 22. 05. 2024
- Jeff Ostoff shows you the latest updates on the engineering disaster aftermath of the MV Dali ship striking the Francis Scott Key Bridge causing the bridge collapse in Baltimore, Md. on the Patapsco River. The video also shows how they started to remove the Key Bridge collapsed truss and roadway debris off the deck of the MV Dali ship. You'll also see the incredible new massive underwater hydraulic claw in operation, dredging up massive sections of bridge debris of the now re-closed channel. They closed this limited access channel on April 29, 2024 after the first ships to pass through the new limited access channel, a deepwater 300 ft wide, and a 35-foot deep access channel for larger ships, the first time since the MV Dali collided with the Francis Scott Key Bridge in Baltimore, MD on March 26, 2024. You'll see progress so far in this Baltimore bridge collapse.
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They barge the bridge collapsed bridge debris to the new 10-acre laydown yard used by the U.S. Army Corps of Engineers to process wreckage from the Francis Scott Key Bridge site. An estimated 50,000 tons of concrete and steel collapsed; once removed, the wreckage is sorted and transported two miles away by barge to Sparrows Point. Debris and wreckage removal is ongoing in support of a top priority to safely and efficiently open the Fort McHenry channel.
00:00 First large merchant ships leave Port of Baltimore past MV Dali wreck
02:50 New equipment arrived, Hydraulic claw named "Gus"
05:46 Updated SONAR images of the Federal Channel from 4/18
07:15 How are they going to remove bridge trusses off MV Dali?
13:20 Recap of last month of Key Bridge salvage operations - Jak na to + styl
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Where there's a will, there's a way.
Y recovered the bodies
Hi Jeff. Thanks for your evaluation of the debris removal. I am blown away as to the speed of this operation has been, and the competence of the engineering team that they have gathered to accomplish it. Thanks for the update.
Thank you for discussing the support needed for Longshore men! There are still thousands of non-union folks that also needs community support.
Seeing that roadway draped across the bow and the past four decades I've traveled across it. Truly chilling!
that part gets me too.i live in dundalk & drove Across that bridge every day for the last 10 yrs.every time I see pictures of the road on top of that ship,I think how many times have I actually drove on that
@@kevinmitchell4018Exactly! It's surreal. 😞
The claw footage is amazing! Keep it coming, Jeff! 🎉❤
Can you pass this remote steel cutting idea to the right pros? See also skyscraper demolition. Great work Jeff🏆
I am thoroughly enjoying your videos! Thanks for covering this.
Jeff, they will be using precision cutting charges to cut the steel so no workers will be in harms way, because any shift in the weight not only could possibly refloat the ship upwards completely shifting the debris. they would rather use precision demolition charges / controlled demolition. This was briefly mentioned in one of the questions at the end of Tuesday's press conference.
The shrapnel from a shape charge cutting steel can throw shrapnel pretty far. I remember when they were imploding a power plant in California a bystander was watching from 2,000 feet away. He got hit by a piece of shrapnel and it cut his leg off. I hope they don't have any sightseers nearby. I hope they can protect the gas pipeline too
My thinking on the truss on the port side of the Dali is different from your approach. I believe the bottom will be left on top of the Dali while the top portion is cut off. Your idea of suspending the entire piece would requires too many cranes over an extended period of time. Plus the weight shifting would be highly unpredictable. Removing as much weight from it without disturbing its stability will most certainly be the approach.
yes no way they would try his idea . the stability is unknown in his scenario
You're on to it.
Pretty sure I heard in one of the many press conferences that they plan to use shaped charges and blow the entire truss up. All cranes combined can't lift that thing anyway, this is obvious even to a layman (if those 'smaller' parts are around 500 tons, the entire truss must be 10.000+ tons).
Also the containers have not been removed for weight reduction but to make space for this operation and create a safety zone.
Yup, multi crane lift is a recipe for disaster. I still think they should have brought in a bigger crane to pick up this section. All may go well, but too much is left to luck imo.
How do you eat an elephant? One bite at a time. I agree with your suggestion that they will likely remove that span from the top down, thus relieving the weight stress from the lower trusses and also from the Dali. It will necessary to determine in which order the pieces are cut free and removed to minimize the risk that the span weakens enough to fold as they're working on it.
What a dangerous job! Kudos to all the workers. They are brave people.
The opened shipping channel passes right over the area where the last two workers should be located. I bet the families are really feeling left behind. I hope they are found soon.
I was thinking the same thing
@@soaringbumnm8374pretty callous. They were people who unfortunately died trying to make a living.
@@soaringbumnm8374pretty sure they were American citizens
@@dirtdevil70they were. But Mr. Edgy up there sees anyone a little brown with a name that’s not Jack as a “foreigner “
Shipping must continue whether they’re found or not
Seeing your explanations help. Dali cleanup has been good to watch. Sad for those workers that were lost
This is not a clean up it is a massive salvage operation
Imagine everybody working to clear this bridge out of the water is actually watching Jeff to get ideas 😂 Thank you for your insight, Jeff!
Thank you for all your good work from the beginning, keeping the public informed
Now THAT'S a claw!
It's hujge and powerful, particularly when teamed with the Chesapeake 1000.
Massive GRAPPLE
Fabulous update Jeff. Thanks for incorporating those stunning photos. The progress they have made is amazing imo. Love your updates
Glad you like them!
Jeff, you seem to be having much fun scooting images of the cranes around! I am very glad things are being cleared as fast as it is. Thank you for your analysis and hypothesis.
Hi Jeff, you did a wonderful job on reporting this complicated dismantling project.
Thanks. Can’t wait to see all the future progress.
Hi Jeff- I am from Sri Lanka. From the day FSK bridge collapse, I have been following most of u tube clips and your explanation is the Best. You give a very descriptive explanation about the salvage operation with kind of engineering side of the operation with all the sonar photographs. Really a good job-cheers!!!
Great Coverage Great Pictures
Thanks Mike!
Great bridge coverage. Love your sense of humor. (Is it OK to say I love your mellow voice?) Doing good, thoughtful analysis. Thanks for your hard work doing a quality UTube channel. And yes, I've watched your other bridge collapse video twice. Again, great, careful, and professional analysis.
Best from Cleveland, Ohio
Thank you kindly Diane
Jeff, thank you those picture are fantastic So clear good job 👏
Glad you like them!
Thanks Jeff for all of the pictures and updates. God Bless.
I'm still on team shaped charges. When the tension on those beams is released, I wouldn't want to be within 100 ft of them. Also supported by an infographic that is on Sal's video from April 19th (Baltimore Update w/William Doyle) at 2:32. Logisticsinsider has a screenshot on their website. It says "Explosive cutting, Span 18, section 4". I'm sure the Army Corps has probably already analyzed the most likely modes of collapse to figure out where to cut. Once the stresses are off, chessie can come in and they can cut to smaller chunks with torches.
They said today that the plan is to use charges.
Worker safety is only one issue. The other is the ship's safety. I wouldn't be surprised if some charges are used, but its going to be limited because they can't risk the structure sliding off the Dali and gouging a hole into its side.
It has a name Gus. You should know this...
Fantastic coverage, thank you! BTW we seafarers say those ships 'sailed' not 'unloaded'. Unloaded means cargo was removed from a ship or discharged in port. But everyone knows what you meant. Keep up the coverage - it is fascinating for those of us who want a sensible report on this terrible tragedy!
You will be amazed when they finally put properly positioned "Shape Charges " on the remaining portion of the 5K tons of bridge . They will take a wedge out of it and pull the remainder off the deck with the top rails of the bridge and with a delayed charge cut it into manageable pieces as it jumps deck.
I am addicting to watching this clean up!!! Amazing 😵 Thanks for the coverage Jeff
Get the Army Core of Engineers to plant Thermite and Cordite charges at the Truss Plates, Navy Seals go underwater to key points as well, then clear the area and blow the bridge truss into manageable chunks in one second !! Model the work so no chunk is heavier than 1,000 Tons so "The Claw" can work effectively.
Clear the bottom with "The Rake" and "The Dust Pan" !!
As much as I have enjoyed Jeff's videos, I think this one is the best yet. Close-ups WITH SOUND, animated placement of various rigs ... THANKS !!
Again, I thank you for these updates, informative and entertaining, You put a lot of work into these, much appreciated.
Excellent video your illustrations were excellent best on you tube by far ! Waiting for next video !
Glad you did a video on how they might take the bridge off the Dali! I was having a discussion a few days ago with my brother (AF Col. Retired), who said the most efficient way would be to use explosives. Apparently there are some that have a real low blast profile? He's an engineer and his take on it was that the same people who demolish buildings in huge cities like New York would know exactly where the pieces would fall if they used explosives because it's their 9 to 5. He seemed to think if they set the explosives to go off at the same time and placed them so they separated the beams in the water from what was sitting on the boat on each side it would make clean-up faster as you can get the span off the Dali more quickly and get her out of the picture so the rest of the work could be focused on. He said he thought he read somewhere the keels were already damaged from the ship twisting so the Dali would be a complete loss. Can't wait to see how they do it!
This will make a fascinating documentary when the project is complete. I hope there are film crews covering the details.
This catastrophic incident should NEVER of happened if all federally mandated laws, safety regulations and protocol were followed.
Someone or someone's decided profit was more important than safety. Senseless loss of lives, billions in damages yet everyone is utterly amazed at cleaning up this horrendous mess. Priorities.
Remarkable explaining what could happen , your talent is amazing , continue on great video , stay safe .
Thank you very much!
When you fly into the BWI airport make sure you have your phone ready. You’ll get a clear view of the bridge stuck on the ship. It makes for an incredible picture.
Great reporting as always! Keep em coming
enjoying all your videos thank you
Thanks for another update. I always enjoy them since I once lived down that way years ago.
Be well. - Todd in Rochester (New York).
Thanks for watching!
Everyone's #1 concern is the bridge, the clesn up, the traffic, speculation x10...WHERE ARE THE LAST 2 LOST WORKERS?
They said today that they still do not know where they are.
@@godblessamerica7048 thank you
Likely under the debris on the bottom :(
@@RichKenyon317 how would you feel if it was your mother that's still missing? Same?
@@user-co7fb6qe5w These people were inside vehicles on break. The guy that survived had "roll-down" windows. There bodies are inside crushed truck cabs.
NGL I don't care about bridges I just like Jeff's voice
I think the engineers might use explosive cutting charges to section the remainder of the bridge into the water.It could be done from the underside so it folds back off the deck of the Dali without having guys endangered by using torches to cut the sections.
All we need now is Aliens!!!
The Claw - the claw 🤣
Its official nickname is GUS.
Thanks for your continued updates i really appreciate it ❤
Thank you for this great follow up.
Another fascinating, in-depth review. Thanks so much
Love your videos. Keep up the good work!
Thank you for your explanation.
Another great video. Very much enjoy your providing images different than others covering the Key Bridge incident. can't wait to see how they clear the Dali of all the debris.
Thanks Edward!
Jeff, appreciate the great videos and evaluations along the way. Kudos! With regards to the Dali’s removal, what if they lift as you suggested, but instead allow the Dali to reverse under power along with the assistance of a few tugs pull her backward and away? Thus freeing the Dali and allowing salvage and removal of the debris of the bridge to be made easier.
Jeff great job , following you daily.
*RESPECT THE CLAW!*
Did you See the Size of the Jaws on that Dude ? WOWsers! 🤔👍
Nice action plan. I thought about the suspension method but you had the cranes.
That's the whole thing right there, those large ships should have always been under tug control going through there.
Hopefully they'll continue this safety practice and avoid another PREVENTABLE CATASTROPHE
Those Tug Boats should have been with the Dali in the 1st place I agree.
My thoughts exactly I said that right away for the price of using 2 tugs till they get past the bridge. Compare that to what all of this will cost plus a new bridge.
A ship the size of Dali can't be stopped that quickly by two small tugs. Only thing that would have changed if tugs had been present in that configuration was the front tug would have been smashed into the pillar by Dali. What needed to happen was the installation of suitable bollards/dolphins to ground even large vessels before they can strike the bridge supports.
@@Swiggityswagger yes the new bridge needs to be wider so the supports can be farther apart and then each one can have it's own coffer dam island filled with heavy ballast and concrete .
@@Swiggityswagger Se vede , că nu te pricepi , la dirijare de nave mari , cu remorchere . Se vede clar că nu știi , cum dirijează remorcherele , navele mari .
Thank you, keep working.
I suspect that the barge of shipping containers are the ones that were removed from the Dali. The Dali is floating high in the stern to keep the bow firmly aground. The clam shell is better suited to the removal of removal of the bridge deck and sediment, dredge, from the channel. There is video of it working in conjunction with a 'wrecking ball' remove solid debris.
Excellent video footage
Great pictures!
They said that they were going to use shaped charges to clear the Dali bridge section, and then use a dredge along sides to try to re-float it.
I like the size of the claw is the answer keep showing your videos double thumbs up
Good timing
He's kinda late. This is old NEWS, not new NEWS.
Flauting cranes letting work together to hold such a big weight is very dangerous.........when there is one that is going a bit out of balance,everything collapse
Leave the Dali stranded until the company pays up.
This is a valuable update, any word on the missing workers yet? Greg in Canada.
tonight they said still searching
They found one more worker who was in a truck. Families notified. One remains. RIP to all of those who passed.
3:18 The type of claw I need to open one of those stupid vacuum sealed jar of pickles
Love it thank you sir and those who make are country work God bless you.
Missed you Jeff- it's been a few days. Like your style of reporting.
My thoughts on pulling that large truss section would be much like you said, but stabilize it with 4 of the heaviest lift cranes at the corners. And wrap heavy straps underneath the entirety of the truss, and use flotation bags to swing the truss up off the bottom. The truss could then be dragged partially submerged to the reclamation area. They already make bags that can float cars, and I know custom bags have been made in attempts to re-float ships and at least one sub.
I'm pretty sure that once they get the weight off the Dali bow, it will want to jump up like a cork. Once water floods in under the hull and the imprint of the hull on the bottom, it will be so slick that the ship will slide out backwards with little effort.
Too bad the Unified Command isn't scouring media like this for ideas because I'm sure there are dozens of ideas like this one that could work.
Thanks for another awesome report Jeff, and I look forward to the next one!
Great video
Dam bro that was epic I wish I still worked in the ship yard thank you. You and your true working heros thanks
Wonder if, since they have the resources on hand, if they will put out a contract to remove more of the bridge approaches then just the minimum necessary to open the Federal ship channel?
I would start on the left side of the ship. Then on the RIGHT side of the truss on the right side of the ship using the Dali to support the left side of the truss as you work. Maybe put a buoy with a cable attached to multiple parts of the truss so if, when it sinks, you can find it.
Once again,thank you for the detailed update! Not like the regular news whos like...another piece moved today! Thats it! Lol
I don't think the removal of the large bridge truss will work that way. I think you're underestimating the weight of the structure - if that section Chesay 1000 carried off was 560 tons, that section that has one end resting on Dali is at least 10000 tons. Even if half of it is resting on the bottom, the combined capacity of all the cranes on scene will not suffice to keep the load from dropping.
However, I seem to recall some slide from the Army CoE that mentioned explosive cutting of the truss structure to get it off the Dali. I'm not a structural engineer, but I think with enough cutting points the truss will just turn into a lot of small(er) pieces that will tumble into the water without doing too much damage. They might even use the Chesapeake 1000 to hold up the piece that's directly on top of Dali so it doesn't need to tumble off but I'm not sure they're going to expose that crane to the risk of shrapnel from the blasting. After the blast, they can just use The Claw to collect all the pieces.
Great video, very interesting 🤔👍🇺🇲
"The Claw" is quite an impressive piece of equipment!
Jeff- Not hearing about the two workers in pickups, I’d point out that the pickups probably floated and could’ve floated away from the bridge, could be downstream.
Ridiculous
I read that the Army Corps of Engineers were talking about using small charges to blow that piece of the bridge free that is resting on the Dali . They said it is a safer operation then putting torch operators onto that perilous Ibeam piece and cutting it loose . I don't know if things have changed since I read that
8:05 there needs to be 2 barges on either side for a mounting foundation. The barges should be only lightly mounted and designed so the Dali can rise as they remove pieces. Scrap truss can be used as stiffeners. All the loose and lightly stressed truss can be removed first. This is a game of horizontal jenga/pickup sticks.
If I haven't made it clear, the barges are to support the main section of trusses to allow Dali to rise as pieces are removed.
Good ideas Jeff!! They could maybe just hold it long enough to pull the Dali backwards.
Jeff im here watching all your pictures So this next one coming up your talking about splitting bridge in pieces and getting it off dali im ready to watch it 😎 and hopefully they find missing 2 people people but i think there on the bridge by the dali on anle, sorry about this thought😢
That claw is awesome! I could watch that baby all day. Thanks for another great video.
I think that they will remove the truss in sections, starting from the top of the truss.
They've already announced that they plan to use timed cutting charges, not men with torches. i think "dynamic cutting" was the buzzword they used.
I got the impression they planned to perform a controlled implosion. I can't imagine you'd want to be holding that true with cranes while cutting charges are exploded.
Instead of cutting it into sections, you could slice the top half so the bottom half is in place but with less weight on top. If rigidity is a problem, you may need to temp add bars to keep it together so it doesn't fold up or use the cranes to keep it from falling into to the water.
Parabéns pelo canal já traduzido para o português
Dear Jeff, is the audio track automatically translated? Is it a CZcams option or a separate tool? Quality is not perfect but understandable.
Thanks, at least ships are moving, but why bring 20/40s in on a barge I wonder?
_Missed the stream as I was making brekky. Breakfast was nice, cool new claw too._
In And Out! That's. The Way A Port Works!
good burgers too
I think maybe they could spilt the truss down the middle lengthwise leaving a larger area for load support and two cranes could keep one side standing while they work cutting up the other.
Rig the truss on the bottom cord so the ship still has some of the weight and cut the top of the truss off all the way back to the water, And then start back at the ship end cutting and removing the bottom cord. Much safer than fully loading all the other cranes at once.
50/50 chance is they might clear what they can on the right side or Starboard side make sure everything is clear. Then slow cut parts of the bridge away to try to get as close to the weight. Because we all know the cranes a lone can't lift that huge section. Cut as close as possible to the water but try to keep the joints in tact so it able to stay up right. Lift what they have so off the ship, pull it out and keep going with the under water cutting and clearing.
But their is sure many way they can do the lift, cut, move and all. So much going on in one small area and so many people. They doing amazing job clearing.
A floating sheerleg crane can lift up to 7000 or 8000 tonnes that’s what is needed to pick the bridge section off the darli
I admire those engineers.
They don't "tow" the ships out of the harbor. The ships are under way on their own power. The tugs "guide" the ships out to assure safe passage through the destruction zone. The tow lines are attached only in case they are needed if something goes bad.
If it refloats with the road bed on it. They will most likely leave it on. The ship is headed right back to the dock it came from anyways. That will save time getting the channel wide open and that is the primary goal. It will be safer and more environmentally better as well.
I can think of an alternative: Hold a large section that rests on the Dali with the Chesapeake 1000. Then locate some dynamite on the trusses to cut it from the remaining part. The cuts should be made so that the larger part does not touch the Dali when it falls down into the water. And they should enable the larger part to shear clear off of the section held by the Chesapeake 1000. Lower cuts closer to Dali, uppercuts more away.
Alternatively that section could be secured by trusses to the left remainder of the bridge. So that you have that section and the remainder resting on the Dali without tipping when the right portion gets cut off.
I heard they're supposed to use demo charges at spots simultaneously to safely make progress in getting the truss off the Dali.
The goal is to clear the channel. The secondary goal is to do it cheapest. Plus: The problem when using multiple cranes is load equalization per crane. Aggravated by The tide changing. This is not an ideal situation for a multi crane lift. (Retired rigger 32 years)
The Klutz Klaw. Anyone who has ever played one of those novelty "Grab A Toy with the Grapple" things should know how tricky it is. Bad idea #568,065. You have to 1) tie up the ends to a center point, suspension bridge style, and 2) get under the center section so it doesn't collapse inward. Otherwise, you're like trying to lift a whole cake with a fork, and you get what they got: scraps. They saw how easily the entire bridge collapsed when just one support was knocked out. The corollary is that you can't lift sections of it from one support point, the whole section has to have integrated support, or it will collapse.
I think the channel only opened to allow the trapped ships get out, and let in ships that will be staying in port for a while. They could start cutting it horizontally So the only part that needs support would be the bit they are working with. Until they get down a little. interesting video 2x👍