Perfect controlled demolition of twin chimneys - video

Pjs When I made the cylinder I used a 4" rod the piston was 8" the wall thickness on the cylinder was 3/4" and yes double acting the main problem in making the cylinder was I had to make such a short head or gland and a thin steel piston of only 1.5" the head was only 2 inches thick and made of steel as well os I had to use a bronze bearing in it the power unit was basically like you would find on a larger log splitter or pony unit on a hydraulic operated trailer. so it had a 4 way valve you just moved the leaver left right or center. the hosed were only about 25 feet so we just lowered everything from floor to floor as we went down. Simple fast and very efficient Hung from a chain hoist on a tripod. I imagine the company called Concrete cutters probably still has it leaning against a wall in their shop I can't imagine them ever getting rid of it.

Certainly does top it! Just think about how efficient the crane/excavator combination actually is: After weakening a section of stack, the crane operator could signal the guy in the excavator to buckle his seat belt and then use the excavator as a wrecking ball!

An operator in a machine dangling from a crane ..... that would almost make an OSHA inspectors head explode.

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Originally Posted by drivermark

An operator in a machine dangling from a crane ..... that would almost make an OSHA inspectors head explode.

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Will now employ an adjective I never use.
AWESOME
How many cranes and operators can we get together?

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Originally Posted by drivermark

An operator in a machine dangling from a crane ..... that would almost make an OSHA inspectors head explode.

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That would be an improvement for many of them!!!!

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Finally, now we know how they feel! :p

CUSTOM acro props. Life is too short!

Demolition of a cooling tower on a German nuclear power plant. It was done this way (instead of with explosives) because of its proximity to a highway, a railroad, the former reactor, and the Rhine river.

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1:21 timelapse of a portion of the demolition, which I believe took about 7 months total:

https://www.youtube.com/watch?v=fqHxxXq1gvc

More: https://de.m.wikipedia.org/wiki/Kern...m-K%C3%A4rlich

Wonder how they refueled the dinosaur eating the tower for 7 months? One bad crack and down the dino comes. Cool but agonizing, monumental task.

NOPE! I don't think so, I remember doing some crazy things when I was young and impervious to any danger,(so I thought)! But the tinniest little talk of getting me hanging on the raged edge of a 300 foot tower and a very large chance of busting my support out from under me, you couldn't pay me enough!

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The demolition of the smoke stack at the defunct power plant in Muskegon, Michigan.

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https://www.youtube.com/watch?v=eSRsxvZUjCo

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Originally Posted by Jon

https://www.youtube.com/watch?v=eSRsxvZUjCo

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Would have been a lot more fun to drop that 500 ft tall monster into the water and create a tsunami

A unique dinosaur on this one with the offset wheel...but excruciatingly slow in demolition. The noise of the refrigerator size pieces falling into the center bottom must have been horrendous, coming back up the stack at them. I'm with Frank, drop it in on itself or the water for effect and expedients. But they can't because of Laws about smokestacks in Michigan.

As a side note back in the day we had equipment there and as I remember the techs hated the cold there (lake effects) when they went for the installation and later maintenance. Cobb is/was a medium station which supplied power for about 200k and was running for 70 years. He is a link to some other pics and a story a year after the shutdown.

Here is a news video from Oct. 2018 https://www.wzzm13.com/article/news/...k/69-599821188

Well I must say that option to knock down a stake is a lot better, or safer than the first one! WOW 650 feet tall!!!

I was trying to get a grip & comprehend the size & then the miniscule ants driving along the road came into view.

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you alright dude?

Ah: you bunch of wooses; this is how it's done.

Oh that one brought back a tragic memory. As I have watched all many of the previous videos, I have thought to myself how lucky many of these workers have been.

I am retired teacher from what used to be small farming community. Had twin boys in the 7th grade back in the 80's. They were playing around an abandoned old barn and brick silo. The bricks were pretty loose from the poor quality mortar. One was apparently "tunneling" through the side of the silo, the other exploring someplace else in the barn, when the worst happened. The whole thing did not come down, but it was fatal anyway.

Be careful out there.

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Originally Posted by Frank S

you alright dude?

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Documented stupidity!!

Ralph

The outcome of hemmjo's tragic story notwithstanding, what other result did workmen in GIF expect? !

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Originally Posted by hemmjo

Oh that one brought back a tragic memory. As I have watched all many of the previous videos, I have thought to myself how lucky many of these workers have been.

I am retired teacher from what used to be small farming community. Had twin boys in the 7th grade back in the 80's. They were playing around an abandoned old barn and brick silo. The bricks were pretty loose from the poor quality mortar. One was apparently "tunneling" through the side of the silo, the other exploring someplace else in the barn, when the worst happened. The whole thing did not come down, but it was fatal anyway.

Be careful out there.

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It's unfortunately a regular occurance with kids exploring. For adults it's plain stupidity in my opinion as limited as it is.

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Impressive, I guess they actually knew what they were doing!

Ralph

And finally, the straw that broke the camel's back. Excellent.

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Originally Posted by Ralphxyz

I guess they actually knew what they were doing!

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The fact they got themselves in such a situation tells me they probably didnt...

2:54 video:

https://www.youtube.com/watch?v=nXjzwF9-uFE

Now that is a SLOOOOOOOOOOW job! Looks like one could take out retirement on that one job.

They at least could have a guy with a torch to cut the rebar.

Ralph

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Serious remodel project. Didn't know picture windows available that big.

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Originally Posted by Toolmaker51

Serious remodel project. Didn't know picture windows available that big.

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Its called curtain wall cladding where they use fixed point glazing if you look close you can see a structure behind some of the sections often times the architect will specify no frame work around the panels using only a clear adhesive in the panel joints from a distance it gives the illusion that the glass is 1 piece for the whole wall

Thar she blows: what about the other 1/2? Pretty to watch but the music was annoying!

https://diqn32j8nouaz.cloudfront.net...demolition.jpg

Also found this cool GIF:

https://diqn32j8nouaz.cloudfront.net...ntensifies.gif

I start at the bottom build a big hole than push it down with the backhoe. This should be a one day project if not a 1/2 day project.
Taking it down from the top is going to take a week.

Ralph

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Originally Posted by Ralphxyz

I start at the bottom build a big hole than push it down with the backhoe. This should be a one day project if not a 1/2 day project.
Taking it down from the top is going to take a week.

Ralph

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longer than that with that bosh electric hammer drill

Much better.

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I like how the concrete dust plumes out top of the stack; perfectly straight. Really exhibits how well the demolition was planned and carried out.

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Originally Posted by Toolmaker51

I like how the concrete dust plumes out top of the stack; perfectly straight. Really exhibits how well the demolition was planned and carried out.

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That is one of those jobs that would be pretty cool to do. In schools, they never talk about about all of the really cool jobs that are available to people.

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Originally Posted by hemmjo

That is one of those jobs that would be pretty cool to do. In schools, they never talk about about all of the really cool jobs that are available to people.

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That's because the really cool jobs are blue collar, with involved skills and don't fill universities with wealthy students. While immense corporations spend real physical time and money on STEM education to support their future; it reflects poorly that trade unions participate so little.