Originally posted by: irwincur
that they heard explosions around the 23st floor
I am wondering if... I know this is 'out there'... But, if maybe the immense pressure exerted on the building and on non supporting beams and bolts may have... hold on here...
Made some break at lower floors.
Do you know what a 20 ton I beam sounds like when it shatters or is torn in half. I am guessing that it can be pretty loud. How about bolts shooting out at the velocity of a rifle. Think about a champaign cork - that is loud and the velocity and pressure are much lower.
Like others, I would rather side with engineers. Most firefighters I know are nice people, but they are not architects or structural engineers. Which probably explains why they went into the building in the first place. I am sure that any engineer would have seen the situation and moved rapidly away from them.
You should have heard my neighbor's house when the basement wall caved in due to water infiltration. I was walking my dog in the middle of the night ( I sleep days), and heard this groaning noise. I had no idea what the hell it was. About the time I was going to walk up to the front door, there was a huge CRACK, very loud, and then the very big picture window blew out like it had been shot out and the lights came on inside. By the time some outfit got out and jacked everything back up, the house was severely damaged and his insurance company paid out over 50K to fix the house.
When the wall caved in, the front of the house, a two story brick house built about 35 years ago, was being held up by the windowframe and some studs on one side of the living room. I heard the studs bending from the weight, and then the window blew and the front of the house dropped about 18" instantly. It was over 2 ft down by the time all the trucks and dozers showed up.
All the windows on the front, both upstairs and downstairs were trashed, they had to redo the frame and then relay all the bricks, etc. It was an all summer job.
I can't figure out how both of them slept through the noises it made. I could hear it as soon as I opened my garage door, about 7 houses away. It was LOUD.
I had my limit switch stick on my 10.5 ft Satellite dish one winter and the screw jack kept running and it stretched out a 5/8" Grade 5 bolt about an inch and a half before it "popped" with what sounded like a rifle shot. My nieghbors were asleep, and it woke them right up. I told them later that day what happened, my dish was all bent to hell, and I found the end of the bolt about a week later, in my front yard about 100' away from the dish. That was just one bolt popping. Imagine what those big rivets on a beam sound when they finally let go..