Column Buckles (
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- čas přidán 29. 08. 2024
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Normally the demolition proceeds at a slow, methodical pace. The building is removed bit by bit. But when a column buckles at 0:30 and a wall starts leaning precariously, swift demolition of the wall becomes necessary.
You can see the rest of the building demolished here:
• Office Bldg. Demolitio...
This is in Bethesda, Maryland, just outside Washington, DC. The new building will be a 22-story office and hotel tower.
By John Z Wetmore, producer of "Perils For Pedestrians".
For those that think the machine operator is very slow you've got to appreciate on a confined site like this any catastrophic collapse of the building, like what almost happened, could result in massive pieces of debris falling or bouncing outside of the site. A chunk of debris hit the perimeter fencing at one point and shook it quite hard. That shouldn't happen. That's why work has to proceed slowly and carefully.
While there might not have been any pedestrians around there were plenty of cars etc and the demo crew seemed to have cordoned off one half of the road following the partial collapse so they must have felt there was a risk to people and passing traffic.
I have driven a lot of machines in my time, but never with a demo claw. I think the operator did well having to operate such an ungainly machine as that, Just look at how much to and fro movement there is just doing a simple job.
Driving that all day must be like sailing a boat in a force 10 sea.
Well the guy walking round under the falling debris wearing a yellow coat and hat will be OK 'cos he's got his PPE on OK.
it may have been slow but it certainly wasnt carefully
he was going way too slow. He wanter to get some overtime.
Good, experienced operator and great dust abatement system, it rained that day too.
I operated a P & H crane with a 130 foot boom swinging a 7 000 lb. Steel ball. Did that job for about one year before moving on to Tower Cranes. Very old buildings from the late 1800's were easier to bring down because they weren't full of rebar. The older steel beam supported buildings with riveted beams were a little more difficult. Unless the ball got dropped exactly at the joints, the rivets wouldn't shear. First I'd break the front of the building wide open to see better inside. Then I'd punch a hole through all of the floors so that the debris would fall all the way to the basement. Next would be to start enlarging the holes until the walls could be knocked in. The technique was not to let too much debris pile up on any floor because that would cushion the impact of the dropped ball. Columns were a little more difficult to destroy. You'd position the ball at the point of desired impact, swing hard right or left so that the ball would swing in a straight line, and then swing hard back to the column. Had to watch out for chunks of concrete flying off the column. Almost got hit a couple of times when a softball size piece of concrete came flying into the crane forcing me to duck. Something like that can kill you. The company never did install a heavy duty screen that I kept asking for. It was dangerous work if you weren't careful and had your plan of action well thought out. Once the buildings got low enough for the excavators to chew on, the crane was no longer needed unless a clam bucket had to be used.
Douglas Rodrigues....Very interesting, Douglas.
Not quite sure why i was expecting catastrophic collapse. Glad though that it did not happen.
Simple. No comments. No music. Big thank you.
Chomping a girder like that. WOW !
all things considered, i thought it was a pretty respectable recovery after a clearly unexpected event.
Unexpected?! Let a moron drive your machine and things like this are totally expected.
@@thebrowns5337 Guarantee you've never run a high reach son, so lay down.
As someone that does this for a living, reading the comments gives me heart burn. This operator has a huge challenge of using a single cylinder shear to demolish a building that is a little too tall for his machine. It is a horrible type of building to demolish under these circumstances, but you use what you got. Imagine grabbing one part of the building and trying to squeeze it with a small opening on that shear, and out of the corner of your eye you can see the whole building shaking above you. You know if you mess up the whole damn thing is falling on you or someone else. You can't see much from the cabs of these machines and if they have cameras they are about useless, the perspective is off and just makes you disorientated. If the image is clear at first, it takes about 5 min before the water and dust cover the lens anyway.
I find this demolition really amazing. They have took the back off the building, but the face that is within a few feet of an open road they have left till last. You can see cars going past and workers in hard hats in the road, within a possible collapse area, directing traffic! Surely that side of the building would have been sensibly removed first when the rest of the building was affording that wall support? Instead they have removed the rest of the building, risking the remaining wall collapsing into the road causing carnage, and almost certainly killing the workers directing the traffic.
This is like playing reverse Jenga. The operator is looking for something to cut or pull that will give him the biggest collapse of the building.
I like the name of the company. I don't see my name very often
As soon as that wall started to buckle at 0:30 the operator should have weakened the far wall enough to prejudice a lean away from the road. This would allow for controlled removal of the roadside wall. Any counteraction to the roadside wall moving would have brought the entire structure toward its own center. Spending all that time dragging all the debris over the side is a huge waste of time.
I would think they would take down the brick facade first since it goes up after the steel. But otherwise a legit demo with those people standing in the road within striking distance.
The title of the video is Very Misleading.
Nothing dramatic.
The girder that “buckles” is better described as a change in load distribution that causes the structure to sway as supporting members are removed from the system. It’s NOT unexpected plastic deformation of a structural component as the title might suggest.
Let’s be genuine; it’s a building being demolished. ALL Beams, Columns and Girders that are Not sheared will buckle.
If you watch the longer video, the operator reacts as if this was an unexpected event. His slow and methodical approach to demolition changed as he hurried to take down the leaning facade. This is most obvious with the large chunks of masonry falling and bouncing towards the street.
I have no idea why that was unexpected, the steel framework inside was clearly bolted through the brick. Cut the steel loose and the wall follows it. Duh.
Can u imagine how much that machine rocks, with that hefty counter balance of a boom 😂
Super Lazy it probably doesn’t rock the machine. It’s only the boom
what ??? why are workers walking idly by in the fall zone of the building !??
Where exactly does the 'girder buckles' in this video? Looks like all the girders are buckling at one point or another.
It buckles at 2:34 Precisely...It's inside the bricks, that's what the wall bent back...
Happens at 0:30, the side away from him buckles in.
Visibility on a machine like this has to be pretty terrible.
Yes, it no doubt is, and that's probably a good reason why he is taking it steady.
@@robertmceachern2428 Point taken - I did wonder !!!!
@stephen john gray and wouldn't last 10mins on a Demi job
I can’t believe they let traffic and people that close!
Those High Reach Excavator's can be a real trip. They flip easy too. Cool video...
Wouldn't it have been easier to demolish floor by floor? Start at the top and work down.
Andy Mooring the cost is tremendous vs this method.
Nothing fancy. Just pure, brute force.
i like that "shear"!..... goes thru a steel i-beam like a hot knife through butter!!!
I'm not sure that cars should've been allowed to continue to drive by while this was going on, seeing the errant chunks of debris bouncing out almost onto the street.
I'm not an expert but If this was my only option I would try to knock off all the brick and concrete off to a bare frame.Just my opinion.
No need,they pick the steel out of the pile bang off the brick and insulation and everything goes into piles. They have a system.
they need to put some cameras at different angles to give the guy more visibility. This was beyond frustrating to watch
That’s one long reachy boi
Here in Detroit, Adamo grabbed the 1st (I think) 160' high reach beating the other contractor by 1 day. Talk about being pissed. They wanted that 1st one for a job they just got. It took about a month or two before they could get the next one built on a Caterpillar Platform. Supply & demand.....
The implosions are so much more exciting and interesting.
We have implosions, too.
czcams.com/play/PLpdpl8imBL0ORDjbhQ2SglfbDW4UAttAq.html
I miss the old days of swinging a demo ball.. Now that was exciting
Donald Bartram, I agree. Loved the old Wrecking Ball. That thing could do real damage real fast😃 Here is my favourite, especially at 2:38 ... czcams.com/video/iHu6rm-s7Mw/video.html
@Donald Bartram. Don, were you in the demolition field? I was and yep, it was a whole different experience back then. Between all the great crane operators either retiring, or leaving for that big demo gig in the sky, plus the safety rules changing, it's all pretty much High Reach Excavators, with an exception every now & then when a crane is the only way to wreck....
@@montydaniels1054 I was more the opposite.. drove concrete block trucks, pipe trucks, dumps,, but did a few demos in my day.
@@donaldbartram6315 Gotcha. Yes, I'm a retired operating engineer. Out of the 35 years of active service, 30 years was in demolition. I worked for 5 different demolition companies. I did operate a crane for about 2 1/2 to 3 years but I was a great excavator operator so the general superintendents I worked for kept me in that seat. I never operated a high reach because I was old school and the teachers I had taught me how to take buildings down from the 3rd, 4th or 5th floor, besides the last 2 companies I worked for were (really cheap) lol. I didn't like doing it that way but I was making excellent money but more importantly I was safe. I've been retired for over 13 years now and miss doing that kind of work.
@@montydaniels1054 Yeah,,, 43 years driving.. 1/2 in const. dump trucks, paving highways & such, as well as hauling & delivering block, conc. pipe, & bagged cemrnt.. the other 1/2 hauling local or regional,, always home at night. The last 6 years hauling groceries for Whole Foods in the North East. Been retired now 5 years,, all the computer tracking & stuff made my decision,, no more real trucks out there.
No surprise there. Buildings fall apart during the demo!
Yes. These guys are criticised for not destroying the facade first, but they knew what they were doing. Slow? Maybe. But haste makes waste. Just one insurance claim, and the company would be hurtin' for certain.
Love the keyboard warriors, AKA armchair demolition experts in this case.
I reckon the operator was moving at a good pace, considering he/she wouldn't be able to see fuck all from the ground.
You could expect the buildings fascia to fail when you're removing all the structure behind it. Still, good save, crew were on the ball, you can see after the failure that a crew member was waving traffic through, so clearly all traffic was stopped at the moment of failure, & the operator knew what to do immediately. So good work all round.
As others mentioned though, I wouldn't have the balls to be walking around next to the building though, nor would I have my vehicle parked below. That's just tempting fate!
Sidewalk superintendents. We had them on every job, mainly employee's lol...
I can't believe they left their trucks there
Was he on a time delay bonus scheme ? spent 90% of his time waving it about
Ah ha! Just scrolled down the introduction - you aren't anything to do with the demo company eh? No one but NO ONE in the game calls any lump of iron "a girder" - that went out about the time this building was constructed. A girder could be timber or metal back then - the name refers to what it did, its position and how it supported what was above it and not what it was made from.
The COLUMN that gives the shear driver a bit of a fright was having a hard job holding itself up before work started - looks as though this area has had quite a good fire going at one time and the guy on the grapple is chewing through some concrete floor for a while and it's delaminating at the rebar - the site is a death trap!
Fixed it.
That cop and worker are too close. 1 lane should be stop. Korea new 3 days ago. A situation same as this. The building they were demolishing fell on a passing bus. It fell across than down.
pretty neat fanagleing of the claw. but why wasn't all those good windows saved? glass isn't cheap. is it?
Sometimes it's cheaper to buy new than pay 15 dudes 20$ an hr over the course of a month to remove windows.
@@roterakaten636 good enough.
2:00 A piece falls off and hits the no entry sign
Oof
Many comments, so I will just say the cut looked odd.
A lot of experts comments (arm chair experts)
Hey. ... we can imagine what would occur (if we were handling this demo) with extreme accuracy.
Yes, those sidewalk superintendents are everywhere lol...
I thought they demolished buildings from the top down, not from side to side.
A remote control giving the claw operator the same vantage point as the camera operator.
Looks like a dinosaur. Pretty cool.
Those cars are a bit close , behind the excavator ?
I wouldn't park there, but they aren't quite as close as they seem with the camera angle.
It’s called controlled demolition and it may be dictated by the cities planning and
zoning commission because of all the nearby buildings to the uninformed.
What was the name/purpose of the building? Its proportions seem odd.
It was an office building. About 3/4 of it had already been removed to the foundation when they got to this corner. Here is a link to a photo of what it was like before they peeled off the added exterior and demolished the west and south ends (in the video they are working on the northeast corner): images1.loopnet.com/i2/IRh0TvSkd2U3Cs4hXjlkEt2TFidsN2W_ZSFMU4yGfSc/112/image.jpg
Can any qualified person tell me if the operator has cameras on that rig ?
Seems if not , the guy is operating with the Braille method !
they usually come with a camera , but on that small of machine I never used it , that machines maybe 80 ft high, I've run a 150 ft and camera wasn't much help ,,,
they usually get smacked off sooner or later ,,, i found cameras useless
The fencing/hoarding on that site is a joke. Any debris falling from the demolition process shouldn't be able to make it to the pavement, vehicles driving past the front are in danger of an impact from falling objects. This is in the US, I thought they had strict OHS laws there?
Helicrete Sydney, they do but no one takes any notice of them, thats why workers mortality is so bad in the US.
I fail to see anything wrong with this video
That’s a cool job ripping things down
Kind of close to that vehicle below... not my truck!
Exit sign was salvageable until 15:54...
My truck would be no where close, it would be around the block...
No one saves exit signs, they are on their way out anyway.
Demolition sites are dangerous.. I knew a fellow who got hurt throwing away a boomerang.
@@justinfufun5483 NICE! I love puns.
This is exactly like watching Me make a cup of tea when I'm drunk (slightly less glass breaking though)..
Very skilled operator!
Yes, he is a great operator....
Great job. Was expecting an accident, a bit clickbaity. They brought that building down perfectly.
The operating engineer must get paid by the hour b/c he is seemingly operating “blind”, with the remains of the lower levels screening his view of the infrastructure higher up? Does he have a spotter that should be directing the
movements if the claw?
J PR camera on top the elbow?
Gosh there seems to have been a terrible mix up. We don't want the building destroyed after all so is there any chance you can maybe put it back together?
He is not doing a fine job, should have taken out floors 3 and 4 completely before he starts on floor 2.
2:02 brick hits sign
Not a real smart way to demo-should have worked from the top floors down in a more organized method.Also, no way should have there been workers and traffic on the street-had the wall fallen outwards, it would have come down on them.
it looks perfectlyt safes to me.
It should have been demolished internally starting at the top floor with 2 square metre opening on each floor dropping materials to ground level and loaded out and when safe to do so drop the remaining building
Probably ok to do, but may not have been an option if say the building was unsafe to begin with?
what the fuck ?? if that western wall falls, it will hit the road way and the traffic managers directing traffic ???? cant they not see that ?
that's the coolest roach clip ever !
I didn't see anything happen, is this a legit video?
At 0:30 the whole wall tilts back. The operator suddenly changes his approach to taking down the structure.
@@JohnZWetmore OK, now I see it. Thanks.
Good job
Doing a good job. And he also separated the ferrous metal into one pile, aluminium into another, asbestos into a third, and finally concrete & bricks into a general waste pile :-). I presume that it is a blower machine in the bottom left of the site, designed to reduce dust in that direction - if so, why, because there doesn't appear to be any obvious problem in that direction.
The blower blasts mist a few stories high over the entire side of the structure. After a while, it is dripping wet. It is much more effective at keeping dust down than a couple of guys with hoses that you see on some demolition sites.
Is that a blower, because it looks a lot like a HKD snowmaking fan gun, it's even orange
HKD also makes mist cannons for dust suppression, but paints them blue. There are similarities in the technology -- a powerful fan blowing fine water droplets high in the air.
Glad I didn't go to the office that day! Hope they saved my spider plant.
I hope they saved the cobwebs, so I can take them and spin them into silk thread. ;->
ого страшно , я предположил что здание рухнет , тем рабочим на дороге надо уйти подальше ((
Just as it was getting good,
The video ended...
There are two longer videos of this demolition:
czcams.com/video/PnvWfe_8UmY/video.html
czcams.com/video/59FvOizwj-8/video.html
@@JohnZWetmore Thank you!
Is there a camera on the end of the arm ?
Camera's are a standard option. I remember how cheap contractor's would get. They'd say a ''Tilt Cab'' is good enough (One less part to break). Camera's can be hard to use especially if the operator has the water running all the time because they're in an area where they'll get shut down if the dust seems to be too much. It just makes it easier to just watch what's happening from the seat instead of a camera.
Where is this? From the voices in the street and the car horns it seem to be in the U.S., northeast U.S., what city? Thank you for the video.
Berg Demolition in Pompano Beach, FL.
Bethesda, Maryland. I'll add that information to the description. Thanks.
4630 Montgomery Ave. Bethesda Maryland. I used to be a Building Engineer in Bethesda, walked past this building on my way to and from McDonalds. McDonalds is gone, as well as the Building I used to work at, it has been torn down to build a new light-rail and Metro Station.
Do you mean the Apex Building over the Purple Line station? Here is a video of it being demolished: czcams.com/video/9cKLYM1GUZk/video.html
Hope nobody’s in the john
Notice they're using their crappiest, old machine... just in case the building flattens it : )
The video stops when they realise it's the wrong building, and that they'll have to repair it.
@Daniel Johnston Hey, I can remember wrecking the wrong house. That happened a lot back in the day. Every operator had 1 laborer with them. So as you traveled up the alley, your laborer would flag you down & point to the house. I remember wrecking a house and just as I pulled the front in, after the dust settled, there it was, the house across the street with ''507'' which was the house we were supposed to wreck.... All I remember after that was swinging around & tracking out as fast as I could, leaving the excavator & laborer there at the end of the alley & side street to wait for the lowboy operator to load the machine, hook up & head to the next job... People tend to get totally pissed off. Yeah, some carry pistols too. It was always scary till about your 5th beer at the bar we hung at after work.....
@@montydaniels1054 Yep. Back in the 60s, in my neighborhood, they demoed the wrong house. Same house number, next street over (both were vacant). I'll bet the owner sued...
@@gyrgrls lol hey, I remember one of the other operators pulling up in front of the house that he was suppose to demo & the guy next door walked out of his place wheeling a shotgun & told the operator if he as much got a piece of wood on his property, he'd shoot-em.... That was just one of those Wild Time back there in Detroit...
Thanks for your comment. That's what helped pull it out of my memory lol....
I know one couple that sued ended up settling out of court. The owner got one of the houses that was gonna be on an upcoming City Auction, had it remodeled, put them up in a Hotel, plus gave them like $75k. That guy & his wife jumped at it since what they owned was like a $5K-$10K house. My Boss, also the Owner must have been drinking when that deal was struck because he usually tried to get out of paying anything......
This is just sad to witness.
Pushnot pull
Must priced that job on a day rate.
New operator. Put on demolition sites to gain operating skills away from workers as on construction sites.
I have zero clue how to run one of those things but it seems the operator is unsure what to do and when.
You have blokes walking around ..your not trained properly to be in a big machine
start at the top down dummies...
Muy buena
Buena obra
How come when I do something like that, I get charged with vandalism ??😆
lol lol lol
A good demolition company would have removed everything from the building, including windows, piping and all so it could all be recycled.
Oddly enough, this is seldom done, unless the owner requests salvage. The demo crew don't care about salvage. They have one job to do, and that's to get rid of the structure. FWIW: Pre-demo salvage is known as "creaming". Usually, other contractors are hired by the owner to do the creaming. But it is fairly rare here in the USA. Most Americans have a "throw-away" mentality, so it seems. I have creamed a few buildings that were scheduled for demolition. The owner didn't care - he just wanted the building gone. But before the demo crew could get in there (wait in line), I and a friend of mine creamed a few buildings. It's kind of like stripping a car before it goes to the auto wreckers ;->
Man tries to commit suicide by pulling building on top of himself,but fails totally.
Brought to you by Murphy & Murphy demo ltd ..................
less than good.
Always an hero that's better 1 false move the front of building goes into the road the driver and site manager goes to prison if some 1 is killed is it worth it he as also got to recycle as there is only that machine on site. The debris that is falling is also going close to the demo boundary wall were there are pedestrians so carefully is key in this demo fair play to the drive good work
I didn't see a single pedestrian lmao. And nothing would fall into the street if he picks out the supports from the side he's on, where there's tons of space. Homie wasn't being careful just slow
WOW THERE ARE A LOT OF EXPERTS HERE.....I WISH I KNEW AS MUCH AS YOU ARM CHAIR DEMO OPERATORS. HAHAHA
Really! LOL Let's see THEM tear down a building with an excavator. I'll be on the sidelines selling popcorn and refreshments.
What a waste of time money and equipment!
That wa my favorite place to go to I will miss it.
Godzilla would have done a better job
Terribly run. These clowns will kill someone.
i used to work in demo,we would put steel ripping cable around
the building connect to a digger,and pull the building down,
this guy is taking to long.
many years ago in my youth i worked for a civil engineer and we often dropped buildings. We used your method when there was enough safe space to do it with cable. It comes down quicker than it takes to thread the cable!
Looks like the crane operators first day on the job
Heck I was suppose to take those good windows before you smashed them all up. Oh well cannot win them all. HA
so what was supposed to happen at :30. I didn't see anything. earned a thumbs down honey
It is pretty clear that, because of the failure of a girder a part of the wall became instable, so that wall has to be removed as soon as possible to avoid accidents. Like collapsing outside the site, e.g the wrong side of the fence... But thanks to the craftmanship of the machine operator the demolition continued properly!
Fire the operator, losing time and money. Must be costing a fortune just to run that machine.
Maxim Edwards He’s looking for spiders .
@@Batman-wv5ng Thanks for that, no doubt he will come out of the cab covered in webs the time he's taking.
Maxim Edwards. I guess firing is your answer to everything is it? Why not supervise and retrain?
Demolition is not always what you hope it will be nothing is for sure when you start cutting beams . Just ask the people at CDI about that they triple redundant there set ups . And you can't just throw that boom around fast ether that jaw is over 3 tons off the end of a long boom !
You can't rush bringing down a building. If debris fell the wrong way people can be killed. This operator did a good job. You would have to have done building demolition to appreciate what a good job he's doing. Considering the length of that boom, it wouldn't take much for that machine to get off balance and turn over.
This is like the "Seinfeld" of demolition videos...nothing happens!
Always feel these buildings should be taken down With a little more care so more of the materials can be reused.