Yet some idiots think that the US government could prepare to take down the twin towers without anyone who worked there, some 30,000 people, noticing any prep work.
But a buddy said that his friend’s uncle’s cat walker has a digital picture of a Wile E Coyote shaped hole where the “plane” impacted, so you must be in the pay of Big Blacksmith. Blacksmiths can’t work metal that isn’t melted, so they must have mind powers. /s
The remaining structure is the central elevator shafts, bathrooms, and emergency stairs. There is a lot of rebar in that concrete structure. When the original implosion happened, that structure did collapse about 1-1/2 to 2 stories. The problem was that inner structure was so solid and well built, the remaining portion remained intact. They either should have weakened it by jackhammering out a lot more concrete on all the floors of the elevator shaft tower, or used more explosives to break up the upper floors during the implosion.
I’d have opted for more explosives.
Now, there are real safety concerns.
Airstrike is a good option.
Demolition is a crap shoot at best. Supporting structures need to be compromised to the point they fail at the right time, or can be safely removed. That’s where the knowledge of a good engineer, accurate plans of the structure, and a detailed examination of demolitions techniques are demanded. One weak link, and disaster arrives. That weak link may be a hidden problem never considered.
Years ago, the Marquis Hotel in Lethbridge, AB was condemned and slated for demolition. Even though it was built in the early 20th Century it was soon discovered it was built to last a very long time. Needless to say, demolition costs ended up 4 times higher than originally estimated.
Yet some idiots think that the US government could prepare to take down the twin towers without anyone who worked there, some 30,000 people, noticing any prep work.
But a buddy said that his friend’s uncle’s cat walker has a digital picture of a Wile E Coyote shaped hole where the “plane” impacted, so you must be in the pay of Big Blacksmith. Blacksmiths can’t work metal that isn’t melted, so they must have mind powers. /s
The remaining structure is the central elevator shafts, bathrooms, and emergency stairs. There is a lot of rebar in that concrete structure. When the original implosion happened, that structure did collapse about 1-1/2 to 2 stories. The problem was that inner structure was so solid and well built, the remaining portion remained intact. They either should have weakened it by jackhammering out a lot more concrete on all the floors of the elevator shaft tower, or used more explosives to break up the upper floors during the implosion.
I’d have opted for more explosives.
Now, there are real safety concerns.
Airstrike is a good option.
Demolition is a crap shoot at best. Supporting structures need to be compromised to the point they fail at the right time, or can be safely removed. That’s where the knowledge of a good engineer, accurate plans of the structure, and a detailed examination of demolitions techniques are demanded. One weak link, and disaster arrives. That weak link may be a hidden problem never considered.
Years ago, the Marquis Hotel in Lethbridge, AB was condemned and slated for demolition. Even though it was built in the early 20th Century it was soon discovered it was built to last a very long time. Needless to say, demolition costs ended up 4 times higher than originally estimated.
http://peel.library.ualberta.ca/postcards/PC003909.html