Dubai (& Abu Dhabi) will not be happy about this. I guess they thought they would have the record for a while.
China Plans To Build The World’s Tallest Building In 90 Days
41–50 of 99 posts
Re: China Plans To Build The World’s Tallest Building In 90 Days
#42My bias wants to make some remark about unions and/or regulations inhibiting construction innovation in the US, but I have no idea if that's actually true... is there progress being made in the US (faster construction? more prefab? etc) or does China's progress simply come with quality sacrifices that are pretty unacceptable in the US?
I believe China has significantly more union members than the US.
http://en.wikipedia.org/wiki/All-China_Federation_of_Trade_U...
Re: China Plans To Build The World’s Tallest Building In 90 Days
#43Obviously, most of this is prefab...so I wonder how much time was spent building all the individual pieces before the official ground breaking? With 220 floors and 104 elevators...that's more than 2 floors and 1 elevator a day. I imagine just the fitting/assembling in place process per floor is enough to fill up a third of a day on its own...so is this basically a huge vertical jigsaw puzzle in which the pieces have…
That was one of the questions I was wondering about. I recently looked at a new factory in the bay area of prefab houses (http://www.youtube.com/watch?v=UmpRRoNqsDI)and one of their claims is they can put up a house in 7 days. But of course it isn't that they start with dirt and 7 days later there is a house, there is a time to build the foundation, and the house is built in a factory, but once the foundation is ready and the house manufactured, it only takes 7 days to install and unfold it. Which is still pretty cool.
So one way this headline could be strictly true is if all of the floors of the building were fabricated off site, once they were ready the company might be able to assemble the final building, in a prepared foundation, in 90 days. That is the only interpretation I can think of that works.
Concrete can take 4 weeks to get to 90% strength [1], so if you didn't do the prefab route you would have to spend more than 90 days just waiting for the lower levels to cure so that you could build the upper levels.
I am interested in what they are trying to do though, it sounds like an interesting challenge.
Re: China Plans To Build The World’s Tallest Building In 90 Days
#44I wonder how much of this will go unused. The "largest mall in the world" was build in China in 2005 and has remained 99% vacant. Having the "tallest building in the world" is an even bigger feather in their cap, but it won't be very impressive if no one actually uses it.
The Empire State Building didn't reach profitability until about two decades after its completion. Nevertheless, it has remained impressive from the time of its completion through today.
Re: China Plans To Build The World’s Tallest Building In 90 Days
#45Dubai (& Abu Dhabi) will not be happy about this. I guess they thought they would have the record for a while.
If this were fark someone would reply with some kind of comment about the threat typically posed to skyscrapers by persons of middle-eastern origin.
But yeah, I wouldn't wanna be on a high floor of this thing.
Re: China Plans To Build The World’s Tallest Building In 90 Days
#46Earlier quoted context omitted.
If it's only 10 cm taller, that sounds like within the margin of error of where you measure. Not that I have any idea what the standard "building height" measurement entails.
We can measure the distance to the moon accurately enough to determine it is getting 3.8 cm furhter from the earth each year, I'm pretty sure 10cm is well outside the margin of error for measurements of something as simple as a building.
Not disagreeing with you, but I wonder how much the Burj expands and contracts every day.
Re: China Plans To Build The World’s Tallest Building In 90 Days
#47Obviously, most of this is prefab...so I wonder how much time was spent building all the individual pieces before the official ground breaking? With 220 floors and 104 elevators...that's more than 2 floors and 1 elevator a day. I imagine just the fitting/assembling in place process per floor is enough to fill up a third of a day on its own...so is this basically a huge vertical jigsaw puzzle in which the pieces have…
That was one of the questions I was wondering about. I recently looked at a new factory in the bay area of prefab houses ( http://www.youtube.com/watch?v=UmpRRoNqsDI)and one of their claims is they can put up a house in 7 days. But of course it isn't that they start with dirt and 7 days later there is a house, there is a time to build the foundation, and the house is built in a factory, but once the foundation is rea…
>"Concrete can take 4 weeks to get to 90% strength [1], so if you didn't do the prefab route you would have to spend more than 90 days just waiting for the lower levels to cure so that you could build the upper levels."
Concrete made with Type III portland cement achieves most of its strength within seven days (concrete made with normal (Type I) cement reaches its design strength in 28 days).
When one needs significant strength more quickly, the mix can be adjusted to provide a higher ultimate strength than is required for the intended loads during the normal life of the building and accelerants added . This results in adequate capacity for construction to continue in as little as a few hours.
Re: China Plans To Build The World’s Tallest Building In 90 Days
#48Wow, this will be impressive if they can pull it off. The fact that BSB was able to construct a 15 story hotel in 15 days proves that it is indeed possible. Pre-fabricated construction is definitely the future, I love how the pieces seem to just snap securely onto the frame.
There will be sceptics, but China is probably the only real country innovating in the construction sector. That hotel is 9 magnitude earthquake resistant. It's a rare 100 year event that an earthquake ever gets past 5.6/6 on the Richter scale (the 2011 Japanese earthquake was a 9).
Seeing articles like this make me excited for the future.
Re: China Plans To Build The World’s Tallest Building In 90 Days
#49Earlier quoted context omitted.
While I too would like to make derogatory remarks about unions, regulations, hippies, and the rest of our society that seem to make a living off of inhibiting progress ... The truth of the matter is that this is bullshit. The "hotel in 2 weeks" story already appeared on HN and was thoroughly discredited. This doesn't seem much more plausible. In the end, if you want the building to stand for more than a year or two,…
I don't remember a huge amount of discredit on the hotel in two weeks? I would expect that hotel is still standing strong for years to come; I think China really are the world leaders when it comes to construction these days (I heard somewhere that they're putting up some insane number of coal power-plants every month?!). What I'd really like to see is an entire prefab, skyscraper filled city built in a year.
There were personal accounts of the buildings being uninhabitable. In fact, they're starting to show up in the comments here!
Re: China Plans To Build The World’s Tallest Building In 90 Days
#50Earlier quoted context omitted.
We can measure the distance to the moon accurately enough to determine it is getting 3.8 cm furhter from the earth each year, I'm pretty sure 10cm is well outside the margin of error for measurements of something as simple as a building.
Not disagreeing with you, but I wonder how much the Burj expands and contracts every day.
Certainly much less than 10 meters