There goes the profit on that job...

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http://www.aolnews.com/nation/article/smokestack-tower-at-mad-river-power-plant-in-ohio-falls-in-wrong-direction/19712314
Good camera placement. Get a load of the girl that just wanted to stand there under the high tension wires. The Darwin Awards nearly claimed another one.
R
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On 11/11/2010 7:23 PM, RicodJour wrote:

http://www.aolnews.com/nation/article/smokestack-tower-at-mad-river-power-plant-in-ohio-falls-in-wrong-direction/19712314
Shit happens, even for top-tier demo companies. As-built doesn't always match the plans on record for how much rebar was used, the concrete used, etc. When they took down the old Hudson's in Detroit several years ago, they ended up damaging a segment of the elevated 'People Mover' tramway. Especially true for older building where the records are incomplete, and because older building were often built with a bigger structural margin than modern buildings, simply because they didn't have computers and decades of test results and lessons learned to draw from.
--
aem sends...

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Then there is the semi-famous story about the Sands in LV. Controlled Demolition came in and started to rig the place based on the plans. Soon found that the contractor had much thicker cement and more rebar than speced or required by codes. The conjecture was the contractor wanted to run NO chance of getting on the wrong side of the Mob guys.
--
"Even I realized that money was to politicians what the ecalyptus tree is to
koala bears: food, water, shelter and something to crap on."
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On 11/11/2010 8:33 PM, Kurt Ullman wrote:

Bomb resistant construction? 8-)
TDD
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The Daring Dufas wrote:

There, I fixed it for ya
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<...snipped...>

the wrong side of the Mob guys...
--
Make it as simple as possible, but no simpler.

Larry Wasserman - Baltimore Maryland - lwasserm(a)sdf. lonestar. org
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I've read that the Teamster's pension funds performed remarkably well and that few ever welshed on a Teamster loan until Hoffa was forced out and Federally appointed trustees took over.
I'm sure some of the remains found in the World Trade Center ruins were not from 2001 but from when the building was built. The construction industry in NYC was (and probably still is) totally mobbed up. Turns out the building inspectors were on the Mafia payroll as well, at least according to a story I read about all the concrete failures plaguing the city, like the new walkways at Yankee Stadium. There are too many other cases to bother citing them all but this search will give you an idea:
http://www.google.com/search?q=Mafia+NYC+inspectors+construction
But here's a good start, a little old, but a good summary and I doubt much has changed:
http://www.thelaborers.net/lexisnexis/articles/mafia_dominates_ny_building_trade.htm
Fans of the Sopranos have seen a lot of these schemes close-up.
-- Bobby G.
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On 11/11/2010 7:23 PM, RicodJour wrote:

http://www.aolnews.com/nation/article/smokestack-tower-at-mad-river-power-plant-in-ohio-falls-in-wrong-direction/19712314
It's great!
I once watched a stone mantle accidentally get knocked over at a party. I knew I was far enough away, I didn't account for the bounce!
Jeff

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http://www.aolnews.com/nation/article/smokestack-tower-at-mad-river-power-plant-in-ohio-falls-in-wrong-direction/19712314
I'm surprised they did not have it tied off some how to prevent it from going into the wires. Overconfident?
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Low bidder.
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On 11/11/2010 10:52 PM, Red Green wrote:

Just how would you tie off a brick structure? Even if you only have charges at the bottom, you never know exactly where the the joints will let go. And even if it all holds together, and the cable doesn't snap, then what the hell do you do? Pull on the cable and hope the top where the cable is attached doesn't come loose? You certainly can't send anyone in to set more charges. I have seen tall metal or wood structures tied off to direct the fall, like felling a tree, but never anything that could disintegrate.
In crowded areas, they sometimes take brick smokestacks down by hand, since there is no good way to ensure where they are going to drop. There used to be a tall stack behind the 108 year old building I work in, for the coal furnace they used to have. They took it down a course at a time.
--
aem sends...

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or Discovery Channel. The pros use cabling all time to help control the fall. Since I did not know there was going to be a test, so I did not listen to the explanation of the physics (grin).
--
"Even I realized that money was to politicians what the ecalyptus tree is to
koala bears: food, water, shelter and something to crap on."
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<stuff snipped>

Demo's obviously tricky business. I saw a great little snippet on TV of guys who were felling a very large tree. All that was left was the trunk, some 25' worth by at least 2' around. It was so well tied to other nearby trees that when the final cut at the base was made, the tree bounced UP, and then down again several times, like a giant pogo stick, smashing a nearby shed to pieces in seconds and sending the crew running for their lives as this huge, massive tree trunk bobbed up and down, moving a couple of yards with each "stroke."
As others have noted, although the stack looks stable, I'll bet a) there wasn't much to tie to, and b) as you note, with an old brick structure with bad mortar, crumbling is pretty hard to control. I recall watching video of a stadium demolition where they had underestimated the size and power of the debris cloud. You see the stadium collapse, and then, a few seconds later you hear screaming as a huge black cloud of dust moving *very* quickly enveloped the cameraman and all those standing next to him.
-- Bobby G.
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Same way you ties off anything. A big assed cable around it secured to the ground, a tank, another building.
Even if you only have

It may not make it fall in the intended direction, but it can help keep it away from unintended consequences, like the power lines. They could have gotten it inside of a 220 degree (or so) arc and had a miss.
.>

Did the guys climb up those narrow wood ladders tied together? That is how they did some work on the stack in our building, about 120 feet or so. Took down the top courses and re-built it. Scary just to watch them climb.
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how about inserting a long steel pipe into the smokestack and using the crane to keep tension on the stack from far away?
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wrote:

And lose a crane, too.
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Have any of you idiots read that this stack is 300 feet??? You would be pretty hard pressed to get a rope, chain, or cable that long. You'd play billy hell getting up on that stack. What on earth would you pull it with that would have a chance of outrunning it?
--
~~~~~~~~~~~~~~~~~~~~
DanG
Keep the whole world singing . . .
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Sure I did.
I keep asking myself if a micro-burst of wind had any bearing on this stack falling in the wrong direction?
Can always blame shift on the weather.
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They are usually from the part that is going to be blown up to the part that isn't so the part that isn't is pulled down by the falling the part that is.

--
"Even I realized that money was to politicians what the ecalyptus tree is to
koala bears: food, water, shelter and something to crap on."
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On Sat, 13 Nov 2010 10:30:53 -0800 (PST), " snipped-for-privacy@aol.com"

You are serious!
300 feet of pipe. Right? How big is this pipe? How long is your intended cable?
Good luck with that program.
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