Youtube video with great graphics and narrative:

https://www.youtube.com/watch?v=VpJ4AjsYp4A

About 4 seconds of ad before you can skip to the main video

The part that amazes me is boring those 10 story holes. And then they slide in a steel sleeve?

I heard their explanation of what they did to prevent cave-in/spalling, but I am amazed that it would be sufficient for the task.

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Te futueo et caballum tuum

1986 300SDL, 362K
1984 300D, 138K

I'm stunned that they seem to have accomplished their objective.

Hopefully it's not in area with major earthquakes that would impact the sand beneath the building. I remember reading about ' sand geysers ' from the New Madrid zone.

https://en.wikipedia.org/wiki/New_Madrid_Seismic_Zone

It strikes me again that building such buildings is not beanbag. The stuff that could go wrong is staggering. They included some graphics about that.

An item down a ways on my bucket list is seeing the leaning tower of Pisa someday. No doubt there were some tense moments around that one.

There is a graphic at this site comparing the height of various buildings.

https://www.elitetravelblog.com/tallest-buildings-world-chart/

__________________
Te futueo et caballum tuum

1986 300SDL, 362K
1984 300D, 138K

One thing I was curious about, they don’t spell it out in the video. After the holes were bored for the long concrete rods, they inserted steel sleeves, which they referred to as temporary. I can only guess they were taken out while the concrete was still wet. One would think that would yield a finished product that would have more friction, which is why those things are there - so that they resist movement and anchor the foundation in place.

But speaking of friction, damn, pulling those things out must take a lot of torque. That’s the kind of stuff that would keep me awake at night. Suppose you’re trying to pull the first one out, and it just will not budge. Meanwhile, the concrete is setting up. I’ve had experience of stuff snapping way down in the middle of a hole, pretty much impossible to extract at that point.

__________________
Te futueo et caballum tuum

1986 300SDL, 362K
1984 300D, 138K

When I visited the Kalif with my daughter, the architect, the displayed pictures were amazing of the work but did not include much detail. It was done by SOM the worlds foremost tall building Architects... from Chicago which has been the leaders since the Chicago fire.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

thanks for sharing that, I'll never have the chance to see it in person, your words help a bit to see what it might be like.

Wish humans would do more good things to offset so much harm that's being done.

It would be cool to see all right. In August 2001 I took my niece up on her offer to visit her in New York City, where she had been working for two years. About four years prior, I had shown her and a friend some of the spots in San Francisco - they had ridden down from Washington state on the Green Tortoise, sort of a hippy dippy version of Greyhound.

On the first day we took the subway from her place in Brooklyn, were walking around the City. I saw one building, I thought holy crap, as tall as that thing looks, the World Trade Center must look gigantic. I asked her what the building was, she looked at me incredulously and said “that’s the World Trade Center.” We were in one of the many canyon zones, only one of them was visible at the moment.

She frequently had to work during the four days I was there, on the days by myself I would ride the subway into the stop under the Trade Center to start my day. There were some nice restaurants in the basement, sometimes they had a band playing out in the main yard. I must’ve looked like a tourist from Kansas, looking up the buildings with a golly gee expression. I can only imagine the Burj Khalif would be sort of mind blowing.

We went up to Windows on the World on my last night there. Twenty days later it was in rubble.

__________________
Te futueo et caballum tuum

1986 300SDL, 362K
1984 300D, 138K

My favorite memory was this. There are glass pods you can go into and look all around up near the top. We were waiting for a group of young Asian men. After they all had their fill of looking they decided they wanted pictures. After a few one of them came over to me and asked if i would be in their picture. A bit puzzled I complied. They took a few pictures and I asked why would they want me in their picture. He said "because you look like AAhhnold"(Swartzenagger). I cracked up...still do at the memory of it.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

Remind me not to mess with TW.

__________________
Te futueo et caballum tuum

1986 300SDL, 362K
1984 300D, 138K

I laughed. It was very funny to me.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

This thread useless withoug pics.

__________________
Te futueo et caballum tuum

1986 300SDL, 362K
1984 300D, 138K

My wife's mother visited the tower when she was a little girl. This would be sometime in the late 50s.

She said then you could walk up the tower and go outside. On the leaning side you felt like you were going to fall off.

Back then no safety rails or fences. You were just very careful about where you stepped.