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9/11 qin-shi-huangdi-fireball

Building implosion

In the controlled demolition industry, building implosion is the strategic placing of explosive material and timing of its detonation so that a structure collapses on itself in a matter of seconds, minimizing the physical damage to its immediate surroundings. Despite its terminology, building implosion also includes the controlled demolition of other structures, like bridges, smokestacks, towers, and tunnels. This is typically done to save time and money of what would otherwise be an extensive demolition process with construction equipment, as well as to reduce construction workers exposure to infrastructure that is in severe disrepair.

Building implosion, which reduces to seconds a process which could take months or years to achieve by other methods, typically occurs in urban areas[citation needed] and often involves large landmark structures.

The actual use of the term "implosion" to refer to the destruction of a building is a misnomer. This had been stated of the destruction of 1515 Tower in West Palm Beach, Florida. "What happens is, you use explosive materials in critical structural connections to allow gravity to bring it down.

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.

  • β€ŠStacy Loizeaux, NOVA, December 1996

Building implosion techniques do not rely on the difference between internal and external pressure to collapse a structure. Instead, the goal is to induce a progressive collapse by weakening or removing critical supports; therefore, the building can no longer withstand gravity loads and will fail under its own weight

Numerous small explosives, strategically placed within the structure, are used to catalyze the collapse. Nitroglycerin, dynamite, or other explosives are used to shatter reinforced concrete supports. Linear shaped charges are used to sever steel supports. These explosives are progressively detonated on supports throughout the structure. Then, explosives on the lower floors initiate the controlled collapse.

A simple structure like a chimney can be prepared for demolition in less than a day. Larger or more complex structures can take up to six months of preparation to remove internal walls and wrap columns with fabric and fencing before firing the explosives.

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[-] YuccaMan@hexbear.net 7 points 8 months ago

Does the site just straight up not work on mobile for anyone else? I can only sign in when using an adblock browser, I can't filter posts or communities, search doesn't work, and hitting next keeps me on the same page.

[-] tocopherol@hexbear.net 7 points 8 months ago

I don't have any issue on android with firefox and ublock origin, though I don't filter or search much

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[-] plinky@hexbear.net 7 points 8 months ago

New pictographic theory: people used simplest symbol closest to their meaning.

Proof: if it’s not too far away I’ll use kitty-birthday-sad instead of sadness

Qed

[-] DragonBallZinn@hexbear.net 7 points 8 months ago

This may be stupid, but former manchildren that got their shit together. How do I start with that process? Two things in particular come to mind, If there’s anything I should prioritize, anywhere to start I’d love hear it.

How do you find a good fitting career path? I have no idea what to do and I’m running out of time but everyone and their mother seems to be able to disregard all life possibilities save for one as teenagers.

I am legit an absolute bore to be around. I have no patience in learning skills, my autism makes me painful to talk to, and I’m not really interested in anything. Even anime and vidya aren’t fun anymore and I feel like a walking zombie. How do I make myself less boring of a person? How do I get myself to like stuff and like doing stuff?

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[-] Frank@hexbear.net 7 points 8 months ago

Therapists will be like "you're doing this to self sabotage" and this will be the second most disruptive mental illness in terms of employment, relationships, and poor quality of life.

[-] Goblinmancer@hexbear.net 6 points 8 months ago

Space marine being men only should be explained by totally arbitary reasons like "girls have cooties".

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[-] hexaflexagonbear@hexbear.net 6 points 8 months ago* (last edited 8 months ago)

It's only autism if your special interest is automorphisms.

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[-] thelastaxolotl@hexbear.net 6 points 8 months ago

Its fun to go to my Lemmy account from time to time just to check all the downvotes hexbear posts generate like for example the i did of the PSL ballot access had 1 downvote at like 15 minutes since posted, which it weird because the people that always downvote hexbear posts do it afther they are an hour old, so then i posted about jill stein and right now that has 10 downvotes, so my hipotesis is that Libs hate all posts about 3rd parties, like a blind rage when the see then get mention so they have to downvote in response.

then i just search jill stein on lemmy and boom 3 recent posts about how she is controlled by trump/putin, libs are so funny

[-] Rojo27@hexbear.net 6 points 8 months ago

Been feeling some sinus pressure the past day and a half and I'm feeling a bit worried about COVID. Might get tested in the next day or so.

[-] Dolores@hexbear.net 6 points 8 months ago

cri gone to a place bougie enough to shatter my impression that amaretto sours are nummy lemon juice, sparkling water, and amaretto drinks. apparently the "correct" way involves no bubbly, sour mix and bourbon and sucks shit

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[-] HarryLime@hexbear.net 6 points 8 months ago
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[-] Dolores@hexbear.net 6 points 9 months ago

TimeGuessr #468 40,525/50,000

🌎🟩🟩🟨 πŸ“…πŸŸ©β¬›β¬›

🌎🟩🟩🟨 πŸ“…πŸŸ©πŸŸ©πŸŸ¨

🌎🟩🟩🟨 πŸ“…πŸŸ©πŸŸ©πŸŸ©

πŸŒŽβ¬›οΈβ¬›οΈβ¬›οΈ πŸ“…πŸŸ©πŸŸ©πŸŸ¨

πŸŒŽπŸŸ©πŸŸ¨β¬›οΈ πŸ“…πŸŸ©β¬›β¬›

spoilereating fucking shit, death to switserland and death to canada. clever shittheel must be smiling with shit through their teeth putting up edmonton with the only identifiable location-name montreal

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this post was submitted on 11 Sep 2024
171 points (89.0% liked)

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