Key Bridge Collapse Moving MORE HUGE Bridge Truss Sections
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- Опубликовано: 15 апр 2024
- Jeff Ostoff shows you the latest videos and photos released today by the US Army Core of Engineers showing the steps they go through to process the Francis Scott Key bridge collapse debris and trusses. Highlights include moving another large section of the collapsed Francis Scott Key Bridge truss, and removing containers from the MV Dali ship, as well as moving the bridge truss over to Sparrows Point in the Baltimore harbor.
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They barge the 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. 
Хобби
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Given that you're rabidly anti "conspiracy" (aka truth) , what do you make of the fbi investigating this as a cyber attack? How long can your cognitive dissonance hold?
The people of Johnstown, Pa. may take issue with your assertion.
[thumbnial ref] When a piece that size gets recovered without any apparent structural damage you know it should have never gone down.
@@donniedeville5102 So cyber attacks stopped proper protection being employed to the uprights? Is that what you are suggesting?
These closeups of the truss removal are amazing! Also, seeing the men standing next to containers in such dangerous conditions is wild. Thanks Jeff
Astonishing. I'm simply fascinated & humbled that there is so much knowledge & ability out there, which most of us know nothing about. That this operation has got up & running so quickly & operates so smoothly is a real tribute to the men & women of these professions. Respect to you, folks!
As long as the politicians stay in front of the cameras and not giving input on how to clear the mess.
@@ralph1133Some politicians have STEM backgrounds.
Thank you Jeff for keeping us updated on the progress.
I have to say there are a lot of RUclipsrs out there speaking about this very issue. However, I came across yours, and I find it very informative. Keep up the great work.
I was the one that mentioned the nonsense conspiracy about this being a terrorist attack. I had stated before I will say it again. They would’ve done it in broad daylight, and with the most amount of traffic. Just like you stated what they did during 911.
Keep up the great work and I will continue to follow your work. Ron.
Yeah, Jeff is measured, calm, methodical and factual. This instills a lot of confidence in his delivery for me. I see the armchair crane experts are not here today 🤣
Thank you for the updates and the clarifications, Jeff!
Great vid, thank you for the regular updates on the progress of the complicated operation.
Thanks again, Jeff - I was waiting for this!
Thank you for the latest upload.
Greetings from Derbyshire , England.
Jeff:
In 1977 when the FSK Bridge was built the shipping channel was 35 feet deep and 500 feet wide.
The support pillars were 100 feet outside each side of the channel in 15-20 feet of water.
There were modest “dolphins” protecting the bridge from Tug
Boats and other smaller Harbor vessels, etc.
There was no need to build robust protection because the deep draft ships could not possibly physically strike the supports in the much shallower waters.
Then over the years, as I sailed those waters in a Catalina 27, they incrementally deepened and widened the shipping channel to the current 50 deep and 700 feet wide: right NEXT to the supporting pillars.
The Corp of Engineers ran the dredging. The MDOT runs the bridge.
BUT NOBODY though to REINFORCE or INCREASE the PROTECTION around the SUPPORTS
OPPS!🥸
Respectfully Submitted by:
Sam Collins
Towson, MD
@samuelcollins Can you direct me to a source for this information? It is an important missing part of the story we've been watching unfold, and so many people ask why wasn't the bridge better protected.
Ah, the quest for the missing link! Let's uncover the truth together.
Impressive closeup footages. Thanks for sharing. You're right; you can't realize the size of those bridge trusses unless you see those guys standing on the wreckage. Prayer for all workers to be safe and protected from any harm during removals of bridge pieces.✝🛐✝🤗🇺🇸🏁
Thank you for the update Jeff excellent work. I didn’t see in your videos but they have recovered another worker. That leaves 2 left to locate. I apologize if I missed that in your updates. Yes they are moving things along quite quickly and we’re grateful here for the good weather. Keep going with the updates!!
Hopefully they can find and recover the last two soon. I expect once that is done it will open up more options for more active dredging of the channels.
good job Jeff..... keep up the great videos !!
Thanks for sharing the video with us. Very interesting. I hope all workers stay safe doing there job. Austin, Tx. 👍
Always the best!! Thank you again, Jeff!!
From a retired bridge construction/deconstruction guy - well done. I don't even bother with anybody else's YT's on this subject. I could tell many a story about removing old bridges and working with failed structures, including Galloping Gerty's remains in Tacoma, but that's for later.
Note that the 1000 crane, when loaded with the various sections, is still sitting stern down, indicating that the buoyancy unused forward still allows for a great deal more lift.
Would you guess that the 1000 uses water for ballast or some other form of buoyancy?
@@JeffBrazier836 I would guess that they likely have a series of tanks that can be empty or filled as needed, much like the tanks on a submarine, and it IS a guess.
Google LEFT COAST LIFTER --- wikipedia.... its a crane twice as big and much newer than the"1000 crane" aka Chesapeake 1000 -- IT is docked nearby in NEw Jersey . That crane has built 2 of the largest bridges in the US in the past decade --- and most recently -- picked up the entire Amtrac Spuyten Duyvil bridge truss in a single pick
@@JeffBrazier836 No doubt about it, WATER is used for counter weight purposes on the Chesapeake 1,000.
Excellent coverage!! Thank you!
Thank you for the updates.
Very informative, thx for sharing and explaining the work.
Glad it was helpful!
"Impressive" doesn't begin to describe what is being accomplished. Thanks for sharing.
Great Video Jeff, keep them coming!!!!
Thank you for this video! Amazing ! Everything was well documented and explained.
Thank you so much for your coverage and your sane commentary on what is happening,
My pleasure
Great video Jeff !!
Jeff, thank you for your dedication to presenting current events with a scientific understanding. While you are not a marine architect, you are an engineer that understands the laws of physics. Yesterday, I was watching the live feed and noticed something interesting, the curvature of the earth and waters. I was looking at the barges and saw that the tires used as bumpers were below "the water line" of the vessels. I realized that what I was seeing was the horizon, as the cameras must have been miles away. With your knowledge can you compute the distance and hence how much was occluded? I believe at one mile, the curvature of the earth is more than five feet. Thank you.
Was pretty cool hanging on the stream today. Was able to get on in time to see a big chunk being moved live.
Thanks for the update Jeff, spoke like a pro, Birmingham England.
Thank you for your commentary.
jeffostroff, I liked this video because it's awesome!
Numerous people reporting on this, but I think you are the best. Perfect balance of thorough and concise. Thank you, and I cast my vote to keep it up!
Thank you so much for your kind words, they mean a lot!
Excellent presentation...concise, factual, interesting...video quality is first rate...thanks!
I can wait for the refloating part great coverage Jeff. love your videos
A detailed report, thank you.
Thank you for these, very informative. Hats off for The Unified Command, great job.
Great stuff Jeff, subscribed.
Welcome aboard Simon
Amazing work
Great video! Thank you!
Great video , continue to show more , stay safe everyone !
Thanks, will do!
Follow Jeff's work, his updates of various calamities are so well presented..he is "Everyman" , but with engineering experience..
Hello 👋 Jeff this video was so interesting and informative thank you for sharing your the man 🧍♂️ 👈🏻💯👍👍👍🙏
Thanks, Jeff!
you bet, glad to make these videos
The US Army Corp of Engineers never stop amazing me
Yes, given their responsibilities for navigation why didn't they manage to get protection installed for the bridge?
@@SubTroppoStop acting ignorant.
@@Objectified Not ignorant as I worked on a project they managed in Saudi Arabia. Not impressed! I recently downloaded a huge history of their activities in the mid-east from their website; perhaps they were pretty thinly stretched in the 70's when the Key bridge was built and maybe they took their hand of the tiller back home. And of course there are all those military bases worldwide to build and maintain, let alone all those levies on the US river system.
@@SubTroppo There is protection already in place. If you're looking for Fail Safe, it doesn't exist, anywhere
@@SubTroppoThe pay is crap,right? Why would a very talented engineer even bother joining the corps?
Thank you for the input. I enjoy your explanations about all this stuff. It is interesting to see how they do all of that. How many of the missing workers have they found yet?
Watching from up in Alberta, Canada. Thanks very informative.
“ Known and Calculating “ love your thinking !😮
Thank you sir.
thank you very much for your informations
Thanks for the updates. We are going out of Baltimore MID June.
Have fun!
Amazing demolition...be safe guys !!!
Great video. I worked the docks for yr. I've unloaded quite a few containers. I'm surprised Big John didn't get called in but it looks like they got the cranes they need.
你的声音真好听，头像也展现得非常清楚，喜欢看，谢谢你！
Great video thank you
As an ex crane operator, if it says it can lift 1000 tons, then it will have had to be tested in excess of twice that to give a 100% margin for error, deterioration over time of the crane itself and incorrect information on the load
Would the work progress faster when they used a bigger crane that could lift entire dropped sections without cutting them first?
Or would it become too difficult or dangerous to lift such large sections, e.g. because they would break at the attachment point?
Hose/tubing has a working pressure, 1/3 of the burst pressure.
@@Rob2 possibly but bigger loads take more space so H&S would have a fit
I believe that the 1000 ton crane you see is the biggest one on the east coast. So, yeah, a bigger crane would surely help, but I guess that there are none bigger that could arrive there in time to help.
That is what I have been waiting to see!
I'm glad you enjoyed it!
Makes me proud to be American! Our resilience to bad situations is #1. 🇺🇸
🤡🤡@@Poschet0423
@5:04 I luv at the top "Zero tolerance policy! Anyone flying a drone in the prohibited area is subject to arrest & imprisonment!" 😂
Your video is the best , plus your narration . Most folks do not see such large marine equipment coordinated in one place .
Thank you so much for your kind words! I'm glad you enjoyed the video and narration.
Just a word about a 1000 ton crane load capacity.
A crane or hoist labelled 1000 ton capacity will lift 1000 tons safely and efficiently, because there is considerable safety factor applied to that load capacity.
I don't know about the USA, but in Canada the Factor of Safety for a material hoist is 5. For personnel hoists it is 10.
What remains to be considered is the service life of the crane.
Consider 2 cranes of similar load capacity of say 200 tons.
One is installed in a power house for servicing and repair of turbines and generators.
The other is installed in a steel mill.
The first one will see a full capacity load only a few times during its life.
The steel mill service will see capacity loads almost every day.
These differences are addressed in sizing the brakes and hoisting rope sheaves to get reasonable service life from the brake shoes and hoisting cable. The manufacturer may make other adjustments in design with the agreement of the client.
Apart from that each crane will safely lift a full capacity load any time.
Great stuff.! 😊
great commentary, liked and subscribed to follow this huge task. (Sydney, Australia)
Welcome aboard James!
Cool coverage. The collapse and removal of the bridge has left nation news coverage completely.
You do a great job.
Great show lnteresting 👍🏻😎
Incredible lift.
The container latches are called "twist locks"
.
The tugs are the unsung heroes of all this as they maneuver the crane barges into position. That has to be a nerve-wracking job in itself.
the crane barge uses counter-flooding to balance loads.
jeffostroff, You're amazing! I hit the like button as soon as I saw it!
good coverage
Awesome, I missed this one. Those girders are twisted like cheese straws! Thanks for posting.
Nice job!
Nice to see things under way. Eventually!!
This is my choice of channel for updates on this operation.
My first job when I was 18 I worked with Donjon Marine & I helped rig for the Chesapeake 1000 for a few months
Thanks for this video. You are putting the main stream media to shame:-)
I appreciate your kind words, thank you!
Praying for all those doing this dangerous work
Subscribed being I think you have some of the best coverage and keen pics. thanks. I would like to know more detail of the Weeks 1000 barge. How much draft and how they control buoyancy. What is total weight ? That would be interesting. Howard Barker from northern MN .
Here is the link tot he Crane: www.donjon.com/ches1000.htm
The boys (and lady’s) out doing this are absolute studs. I live on the Mississippi and this is not light work. I pray for the workers on the bridge
Could you please show us the Design of the Bridge. ie of the individual steel sections....and then the roadway....There would have been other services ie street lighting...Electrical connections...etc...So we can understand the huge task involved.....We see from the Videos the steel work above the water....but thats just one ⅓ of whats there is . Im enjoying your imput.Thank you
Thanks. Surprised that they're moving the crane & piece with a Tug to unload at the landing rather then keeping the crane in place! Speeds things up if you've got the cranes to spare.
Great point on the engineering limits. Even if the C1000 has a theoretical limit of 1000T, it’s important to remember the pieces are stuck in the bottom and the mud. So the suction force and initial lifting forces are larger than the weight of the piece after it’s lifted. So they have to leave some headroom in the lifts for that as well.
Wow. It seemed the bridge removal was going pretty slow. This is a great demonstration of how much planning was going on in those early days. Now those schedules look very doable.
Hi Jeff, Are they cutting sections of bridge sections that are under water? And if so, do they do that under water cutting? If you have any photos , appreciate if you could post them. Tks, Jayatissa from Sri Lanka.
Can you imagine working on cutting the beams underwater with no visibility? I would think that process has to be insane as you can't see the hazards, fish, or your cutting torch. I assume they are using an arc method to cut underwater. When visibility is inches, this makes this process 20 times more difficult. The management team is a doing a great job to plan out the tasks and keep everyone working! That means the management team is older, trained, and experienced. Many times, we have to wait for an engineer to develop gray hair before they are experienced enough for large projects.
Many organizations could use the Unified Command as a great example of different people working and coordinating together to get the job done.
So awesome.
The talk about the size of the cranes and the skill of the crane driver is all very well but the real skill and courage in these big lifts on this project lies with the riggers who have the dangerous job of setting up the slings etc. for the lifts. They don't seem to have featured in the video coverage. Good overview of the work though, Jeff.
CVB. - Retired Civil Engineer, Cornwall UK
@colinburrough5621 Excellent point you make. I completely agree with you about the skill and courage of the riggers. I’d like to add that if a rig like the Chesapeake 1000 is using wire rope slings as opposed to synthetic slings, then the work is even harder for the riggers. And of course any heavy lift/ rigging operation is always much more difficult when working on the water.Take Care.
A light touch on the controls is paramount. There are hand lines on that container. They are working on step E.
Great video Jeff, your content is fantastic. Jeff, I was thinking. Instead of building another bridge, maybe they can build an underwater tunnel instead. They would never have this problem again. Just a thought.
That approach has been brought up numerous times on this channel and every other one discussing this incident. The problem with a tunnel is that oversize and hazmat shipments are _prohibited_ from traveling thru them. Now, if the city/state _want_ those shipments to remain on the current surface-road detour around the harbor and Baltimore itself in perpetuity, they may opt for a tunnel. But in all likelihood a bridge (probably a cable-stayed one with a wide span and high deck) will be much cheaper and faster to build.
Another great video Jeff. Do you think that they will get started on construction of a new bridge by summer?
No, the designs will have to be approved, then contracts awarded. I bet closer to end of year
Fabulous
I did not expect the crane to be moved with 450 tons hanging off off it. Wow!
Pretty smooth and well balanced!
If you don’t move the crane, you end up putting the load down where you picked it up from. 😳
The crane/barge has no slewing mechanism. 🤓
Thanks for the video, very clear and sharp images. A minor note, it is the Dali, it is a ship, not the Dali ship.
Titanic ship!
Are you making fun of Jeff man?
The 1000 ton lifting capability is at 63 feet of reach. The capacity decreases with longer reaches. We don't know either how good the weight estimate was or the reach. The other consideration is the stability of the piece left behind. Unplanned movement can be very dangerous.
I was about to make a similar comment. At a relatively light lift at 450T would allow it to luff out some. The hook has to be to out a little over half the width of the load. (Assuming a load width greater than 126’).
This crane barge has no slewing ability (with good reason) and so would need some space ‘over the fenders’ to safely land a wide load.
I would have thought the crane would have an LMI (Load Moment Indicator) so that at all times the operator(s) knew EXACTLY how much weight (load & rigging) was hanging on the hook.
With a max pick rating of 1000T @ 63' radius the lifting capacity will probably be about half that at double the radius (125'). So 450 tons was likely to be getting somewhere close to the limit.
@@anamariasherwin1020 you can take to the bank they know, to the ton, what the max load vs luff angle is.
I would love to see the load diagram for this beast.
Floating cranes can be a little counterintuitive with regard to what they can lift as opposed to their land-based brothers.
I’m not even going to hazard a guess what they are.
I’ll continue to dig for concrete facts and report back.
Cheers. 👍
I just checked.... they have not cancelled Fleet Week yet, so they must plan to have the whole ordeal cleaned up by June.
Thanks for the update!!! Much love from Baltimore, Hon!
Yes they have the plan to have everything cleaned up by end of May
Good evening Jeff. Do you have any insight into what happens at night?
That piece at 0:51 is unique. I just singled it out from a photograph of the intact bridge. If this is really 450 tons, then this bridge is a lot larger and heavier than I thought it was.
in N out don't do well down here in Texas. we have Whataburger for that! awesome vids!
I ate there in Austin last October
@@jeffostroff thats my home city!
Are the high resolution video shots from Corp of engineers cameras or another source?
If you pause the video at 6:53 you can see the plates on the underside of the truss where the Cables/steel rods(?) used to support the roadway were located. Cables had to severed to remove the main truss section. Would love it if you could provide information on the types of underwater cutting tools that are used. One can still take a virtual ride over the bridge on the google map street view.
Army Corps of Engineers made that video. I show everything they put out, would love to see video of them cutting under water
Bro you're the greatest engineer..... Thank you very very very very very very much for taking the time to explain all this stuff in the most interesting way that one could explain it....
My dentist told me one time that most dentists could be college professors and then he turned and said they better be able to be....
Answer.... you could most definitely be a college professor in the engineering department teaching engineers how to build bridges that will not fall down....
Like I said my dad had 2 years engineering at the University of Washington.... And he used to always say to me .....use your head.... If they
Would have used their head.... they could have built some bumper pilings driven into the sand all grouped together like they have around ferry docks and they would be spring-loaded bumpers.... They should have used their head.....!!!!!!!!!
Would love some time laps drone shots of the work!