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Originally posted by hooper
reply to post by ANOK
Really? That's the limit of your expertise? Google "howstuffworks"? You know there is a real world out there. Implosion is a word used for public consumption. All explosives react outwards. That may cause the building to fall in but the explosives are not pushing the building into its center.
WHAT IS IMPLOSION?
Implosion is the direct opposite of explosion. Everyone has seen an explosion - a charge goes off and something solid is ripped into a lot of little pieces that fly all over the place, making everyone in the vicinity take cover. An implosion is the strategic placement of explosive charges that actually destroy the structural integrity of the building causing it to fall not out, but in upon itself (this is often referred to as falling into its own footprint). Imagine wooden blocks stacked on top of each other; pull out a few of the bottom blocks and the structure falls by gravity...
...To bring down a building in a controlled manner there must be a great deal of planning
What is an “implosion”? How does it work?
Implosion is a safe and effective means of razing a structure via the use of explosives on pre-determined structural members. This demolition technique has been successfully utilized for the last half century.
There are several steps to performing an implosion:
1. Key structural supports are identified and exposed by removing interior, non-load bearing walls and piping. This process will take several weeks to complete.
2. Small diameter holes will be drilled at specific locations to act as explosive receptacles. Explosives are then placed inside the structural members, equipped with internal non-electric timing devices that will fire on queue. Once these ‘charges’ have been placed they will be covered to prevent fly of debris.
3. Final wiring will not take place until the morning of the implosion. Both towers will be imploded simultaneously and the implosion will cause the interior structure of each tower to rotate outward and away from the Commons food service facility. One tower will collapse to the east and the other to the west.
Originally posted by hooper
If you had a clue you'd realize there is no such thing as an implosion in demolition.
And yes, they would love to just set fire to buildings. You know how much it costs to handle demolition debris that has no secondary market value? Much cheaper to watch go up in smoke that to be paying to have it collected and hauled away. There's even a good market these days for demolition concrete, CMU and brick. Used as recycled flex base. And of course the metals. But of course the neighbors get a little nervous when you set fire to the building next door.
In the US in the early nineteenth century when a lot of Americans were moving west they would actually set fire to their cabins so they could collect the nails. Nails were very expensive before the advent of the wire nail and a very important commodity in construction.
The term "implosion" was coined by my grandmother back in, I guess, the '60s. It's a more descriptive way to explain what we do than "explosion." There are a series of small explosions, but the building itself isn't erupting outward. It's actually being pulled in on top of itself. What we're really doing is removing specific support columns within the structure and then cajoling the building in one direction or another, or straight down. ”
—Stacy Loizeaux, NOVA, December 1996
If the collapse was solely due to fatigue, it wouldn't have come down as it did....
but instead would have toppled over at an angle. One side collapsing before the other due to being weakened on one side due to excessive heat.
The term "implosion" was coined by my grandmother back in, I guess, the '60s. It's a more descriptive way to explain what we do than "explosion." (because the building fall inwards, not outwards as would be normal)
There are a series of small explosions, but the building itself isn't erupting outward. (as it normally would)
It's actually being pulled in on top of itself. What we're really doing is removing specific support columns within the structure and then cajoling the building in one direction or another, or straight down. ” (against it's natural tendency to fall outwards)
—Stacy Loizeaux, NOVA, December 1996
They can not do that with uncontrolled fire.
Please understand that, and quit with the pathetic attempts to confuse everything.
Originally posted by hooper
If the fire takes out the interior supports the result is the same, no?
That's your whole point, the walls fell on top of the debris because the interior supports of the building were removed, right? But you are insisting, for some strange reason, that fire can't compromise the structure of a building, or in other words all structures are essentially immune from structural damage from fire.
How can fire know what supports to take out, and in what timing, in order to create the perfect set of events to allow the building to implode?
Originally posted by dillweed
reply to post by hooper
I'm buying it! What I don't buy is you posting thousands of times, saying the same thing. You guy's used to concern me, but now I find you pathetically amusing. Keep posting, the more you open your month, the sillier you look. You picked the wrong team.