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New material enables 1,000-meter super-skyscrapers
The Register ^ | 18 June 2013 | Rik Myslewski

Posted on 06/18/2013 12:15:36 PM PDT by ShadowAce

A Finnish company says that it has solved a problem that has vexed the designers of ultra-tall skyscrapers such as the 828-meter Burj Khalifa in Dubai or the 509-meter Taipei 101 in Taiwan – and we'll pause for a moment to let you guess what that problem might be.

Ready? It's the fact that elevators are currently limited to a maximum travel distance of around 500 meters. The Burj Khalifa, in fact, has an elevator that holds the world record for the longest travel distance: 504m (1,654 feet).

And what's keeping elevators from exceeding that limit? Time for another pause for reflection, dear Reg reader. Okay, now give yourself a gold star if you identified the limiting factor as the weight of the steel cable, known in the elevator trade as the rope.

Kone, a global elevator and escalator company headquartered in Espoo, Finland, has introduced what it immodestly calls UltraRope, which it claims will enable skyscraper elevators to rise as high as 1,000 meters in a single trip.

Kone provides some rather staggering stats about steel rope versus its UltraRope. For example, at a building height of 500 meters and with an elevator large enough to hold two-dozen souls, the total mass in motion of a steel rope-hoisted lift system would be 29,000 kilograms. The same system equipped with UltraRope would total a mere 12,800 kilograms.

There's a lot of heavy
lifting needed to lift a lift

That's impressive enough, but if you extend that building height to 800 meters, the steel-rope weight would increase to 108,600 kilograms, while the UltraRope-based lift system would rise only to 13,900 kilograms.

That weight savings would result in a 15 per cent reduction in energy consumption for a 500-meter elevator, Kone claims, and a 45 per cent reduction should your elevator ride be 800 meters.

What's more, Kone says that UltraRope will last "at least twice" as long as conventional steel rope, is highly resistant to wear and abrasion, and requires no lubrication.

UltraRope's secret? That versatile über-material carbon fiber; or, as Kone explains, "a carbon fiber core and a unique high-friction coating" – and it's not revealing exactly what that "unique" coating is made of.

Kone also says that UltraRope is less susceptible to being affected by building sway caused by high winds because "carbon fiber resonates at a completely different frequency to steel and most other building materials." Since conventional steel-roped elevators sometimes need to be shut down when swaying affects them, score this one "advantage, UltraRope."

"The benefits of KONE UltraRope versus conventional elevator hoisting technologies are numerous and indisputable," says Kone president and CEO Matti Alahuhta.

Those benefits are going to be needed in the near future, seeing as how more than half of the Earth's seven-plus billion souls now live in cities – and that urbanization is accelerating. This presents an eco-friendly opportunity for Kone, the company says, because "building upwards is seen as the sustainable urban solution."

There are more and more tall buildings being built, and the tallest are getting taller. "Nearly 600 buildings of 200 meters or more are currently under construction or planned to be built over the next few years, according to the Council on Tall Buildings and Urban Habitat," says Kone, citing the organization that just wrapped up its "tall building event of the year" in London.

There are currently only three elevator-equipped structures in the world that top 500 meters – the two mentioned above plus Toronto, Ontario's 553-meter CN Tower – and only the Burj Khalifa has a 500-meter elevator. However, Kone notes that 20 more over-500 meter buildings are currently in the planning stages, and if UltraRope catches on you may be able to reach those new buildings' top floors without having to stop and switch into a second-stage elevator as you now need to do in many a tall building.

Now if they can only do something about that ear-popping pressure change. ®


TOPICS: Technical
KEYWORDS: carbonfibre; dubai; elevator; magicropetrick; spaceelevator; taiwan
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1 posted on 06/18/2013 12:15:36 PM PDT by ShadowAce
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To: rdb3; Calvinist_Dark_Lord; Salo; JosephW; Only1choice____Freedom; amigatec; Still Thinking; ...

2 posted on 06/18/2013 12:15:52 PM PDT by ShadowAce (Linux -- The Ultimate Windows Service Pack)
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To: ShadowAce

Terrorists are salivating at the prospect.


3 posted on 06/18/2013 12:16:40 PM PDT by dfwgator
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To: ShadowAce

Why don’t they build underground?................


4 posted on 06/18/2013 12:18:39 PM PDT by Red Badger (Want to be surprised? Google your own name......Want to have fun? Google your friend's names........)
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To: dfwgator

” Terrorists are salivating at the prospect.”

One thing about FR.....you think of it?......somebody already posted it : )


5 posted on 06/18/2013 12:20:48 PM PDT by stephenjohnbanker
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To: Red Badger
Why don’t they build underground?

Whether you build below or above ground, the elevator problem is the same.

6 posted on 06/18/2013 12:20:53 PM PDT by ShadowAce (Linux -- The Ultimate Windows Service Pack)
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To: ShadowAce

I’d quibble a bit with the implied premise that changing elevators is such an absolute deal breaker. Speaking personally, I think I’d find it kind of a cool thing to do.

I just can’t quite imagine the conversation “Yeah - we could have built a building that was X meters but decided not to because it would have required passengers to change elevators.”


7 posted on 06/18/2013 12:21:45 PM PDT by 2 Kool 2 Be 4-Gotten
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To: ShadowAce
Paging Konstantin Tsiolkovsky and Arthur C. Clarke...

Your elevator is waiting...

8 posted on 06/18/2013 12:21:48 PM PDT by thackney (life is fragile, handle with prayer)
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To: Red Badger

Resident Evil comes to mind.


9 posted on 06/18/2013 12:23:52 PM PDT by Baseballguy (If we knew what we know now in Oct would we do anything different?)
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To: ShadowAce

Who is John Galt?


10 posted on 06/18/2013 12:25:29 PM PDT by Raycpa
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To: ShadowAce

Reardon Steel


11 posted on 06/18/2013 12:25:44 PM PDT by Ray76 (Do you reject Obama? And all his works? And all his empty promises?)
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To: ShadowAce

the world is not better off from mega cities

they always require more public subsidies and public subsidized services to keep them livible

they concentrate power - potlitical and financial

they benefit bankers and real estate interests more than anyone else

they are unnecessary more as time goes on as technology keeps making dispersal of people and work less of a difficulty in getting work done

so, do I care that some Persian Gulf hereditary autocrat ruler will now commission the next testament to architectual penis envy? NO.


12 posted on 06/18/2013 12:26:10 PM PDT by Wuli (qu)
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To: Red Badger
Why don’t they build underground?................

Who wants to spend that long in an elevator and not get a view?

13 posted on 06/18/2013 12:26:21 PM PDT by thackney (life is fragile, handle with prayer)
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To: 2 Kool 2 Be 4-Gotten

Its not the changing, its the added cost per square foot for effective usable space.


14 posted on 06/18/2013 12:28:03 PM PDT by Raycpa
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To: ShadowAce

Why don’t the engineers just use magnetic levitation for elevators?

http://www.toshiba-elevator.co.jp/elv/infoeng/technology/tec05.jsp


15 posted on 06/18/2013 12:28:59 PM PDT by MeganC (A gun is like a parachute. If you need one, and don't have one, you'll never need one again.)
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To: ShadowAce

Then they said, “Come, let us build ourselves a city, with a tower that reaches to the heavens, so that we may make a name for ourselves; otherwise we will be scattered over the face of the whole earth.”


16 posted on 06/18/2013 12:29:49 PM PDT by Raycpa
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To: thackney

Repairmen?


17 posted on 06/18/2013 12:32:33 PM PDT by MHGinTN (Being deceived can be cured.)
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To: Raycpa

Find a way to stack them somehow then. I’m not being funny - there’s got to be a way.


18 posted on 06/18/2013 12:33:55 PM PDT by 2 Kool 2 Be 4-Gotten
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To: ShadowAce

No thanks. They’re standing targets.


19 posted on 06/18/2013 12:36:13 PM PDT by lurk
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To: 2 Kool 2 Be 4-Gotten; Raycpa

*Gets on the elevator in the lobby, and pushes the button for 995. Elevator stops on every floor due to some a*hole who pushed every button before he got out :)


20 posted on 06/18/2013 12:36:37 PM PDT by ShadowAce (Linux -- The Ultimate Windows Service Pack)
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To: ShadowAce

21 posted on 06/18/2013 12:36:55 PM PDT by ThomasThomas (A bad hair day is not a mental issue, or is it?)
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To: ShadowAce

The closer you get to the center of the earth, the lighter things are..............


22 posted on 06/18/2013 12:39:59 PM PDT by Red Badger (Want to be surprised? Google your own name......Want to have fun? Google your friend's names........)
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To: thackney

Most elevators have four walls with graffiti.............


23 posted on 06/18/2013 12:40:52 PM PDT by Red Badger (Want to be surprised? Google your own name......Want to have fun? Google your friend's names........)
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To: 2 Kool 2 Be 4-Gotten

I think elevators are not all the issues. Utilities -water, power lines, air, fire suppression etc all converge at creating space demands the higher one goes.


24 posted on 06/18/2013 12:41:28 PM PDT by Raycpa
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To: Red Badger

Actually, it looks like it’s darker down there ... until you break through the mantle.


25 posted on 06/18/2013 12:41:39 PM PDT by MHGinTN (Being deceived can be cured.)
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To: MHGinTN

Then you won’t need an elevator. The magma will shoot you up....................


26 posted on 06/18/2013 12:42:56 PM PDT by Red Badger (Want to be surprised? Google your own name......Want to have fun? Google your friend's names........)
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To: ShadowAce

serious question: Why dont elevators have gears along the shaft, and an electric motor on the car itself? (no rope)


27 posted on 06/18/2013 12:43:21 PM PDT by Mr. K (There are lies, damned lies, statistics, and democrat talking points.)
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To: Red Badger
The closer you get to the center of the earth, the lighter things are..............

If you go deep enough to become noticeably lighter, you are going to have some more significant problems than weight.

28 posted on 06/18/2013 12:43:37 PM PDT by thackney (life is fragile, handle with prayer)
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To: Baseballguy

Keeps the zombies out.............


29 posted on 06/18/2013 12:43:48 PM PDT by Red Badger (Want to be surprised? Google your own name......Want to have fun? Google your friend's names........)
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To: ShadowAce

“He provides some rather staggering stats about steel rope versus its UltraRope. For example, at a building height of 500 meters and with an elevator large enough to hold two-dozen souls, the total mass in motion of a steel rope-hoisted lift system would be 29,000 kilograms. The same system equipped with UltraRope would total a mere 12,800 kilograms.
.... but if you extend that building height to 800 meters, the steel-rope weight would increase to 108,600 kilograms, while the UltraRope-based lift system would rise only to 13,900 kilograms.”

12,800 kg for 500 meters is 25.6 kg/m.

An additional 1,100 kg for 300 more meters?

Now it’s 3.67 kg/m.

Why is “UltraRope” so much lighter per length measure after the first 500 meters upwards?

What am I missing here?


30 posted on 06/18/2013 12:43:54 PM PDT by treetopsandroofs (Had FDR been GOP, there would have been no World Wars, just "The Great War" and "Roosevelt's Wars".)
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To: Baseballguy
Resident Evil comes to mind.

Loved that game, the first and second one.
31 posted on 06/18/2013 12:43:58 PM PDT by ForAmerica (Texas Conservative Christian Black Man!)
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To: thackney

Gonna need a bigger air conditioner.................


32 posted on 06/18/2013 12:44:19 PM PDT by Red Badger (Want to be surprised? Google your own name......Want to have fun? Google your friend's names........)
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To: Raycpa

Well sure. Of course. But the implied premise of the article was that it was max elevator height that was THE bottleneck.


33 posted on 06/18/2013 12:45:22 PM PDT by 2 Kool 2 Be 4-Gotten
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To: Mr. K

I’ve wondered that myself.


34 posted on 06/18/2013 12:45:31 PM PDT by ShadowAce (Linux -- The Ultimate Windows Service Pack)
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To: treetopsandroofs

You’re not taking into account the weight of the car and people, which is constant in both measures. The weight of the rope is the same, but as you string out the steel cable, there is more weight due to more cable.


35 posted on 06/18/2013 12:47:01 PM PDT by ShadowAce (Linux -- The Ultimate Windows Service Pack)
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To: treetopsandroofs

The infrastructure/motors etc.


36 posted on 06/18/2013 12:47:01 PM PDT by Norm Lenhart
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To: ShadowAce

Ah, ok, thanks.


37 posted on 06/18/2013 12:48:09 PM PDT by treetopsandroofs (Had FDR been GOP, there would have been no World Wars, just "The Great War" and "Roosevelt's Wars".)
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To: Mr. K

Don’t know, but I’ll bet it has something to do with regulations from a bureaucratic buffoon agency.


38 posted on 06/18/2013 12:49:39 PM PDT by MHGinTN (Being deceived can be cured.)
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To: Red Badger

Not to mention dealing with fluid pressure from the exterior...


39 posted on 06/18/2013 12:52:31 PM PDT by thackney (life is fragile, handle with prayer)
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To: ShadowAce

If I’m getting this, they could build taller skyscrapers today if they were willing to have two elevators—one from the first floor to 500 meters, and the second from 500 meters to the top. But, that would be too uncool a design, so it isn’t done, and has to await an improved, ultralight, high-tensile elevator rope that can do bottom to top in a single run.


40 posted on 06/18/2013 1:00:30 PM PDT by Pearls Before Swine
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To: ShadowAce

I’ve been to the top of the Burj Khalifa.Not really the top...the highest public observation deck (above which are private apartments).It wasn’t nearly as impressive as was the roof deck of the WTC or the observation deck at the ESB.All you see from the Burj is a few other modern buildings and then sand.Lots and lots of sand!


41 posted on 06/18/2013 1:01:30 PM PDT by Gay State Conservative (The Civil Servants Are No Longer Servants...Or Civil.)
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To: Red Badger

A real answer to your first question:

Why Can’t We Start Building The World’s Deepest Building?
http://www.forbes.com/sites/quora/2013/02/11/why-cant-we-start-building-the-worlds-deepest-building/

More expensive and less desirable.


42 posted on 06/18/2013 1:03:22 PM PDT by thackney (life is fragile, handle with prayer)
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To: treetopsandroofs

Ooo Ooo! Algebra time
X = weight of rope
Y = weight of car
X+Y=12800
1.6X+Y=13900 (60% more length)

so

.6X = 1100
X = 1800 or so
which is 3.6 Kg/M
(Which seems more reasonable)


43 posted on 06/18/2013 1:07:06 PM PDT by Technocrat (Romney-Ryan 2012 No I'm not changing my Sig)
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To: Technocrat

Keep in mind as the rope gets longer, it has to have more strength, so it has more material per meter.


44 posted on 06/18/2013 1:09:54 PM PDT by thackney (life is fragile, handle with prayer)
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To: ShadowAce

I don’t know; I’d have thought the further you get from the earths core, the less the gravity so the lighter everything gets.


45 posted on 06/18/2013 1:11:02 PM PDT by Rich21IE
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To: Mr. K
RE: why doesn't elevator have a motor on the car

I think elevators usually use a counterweight, so that when the car goes up, the counterweight goes down. That way, only the weight of passengers is being lifted, not the weight of the car. This setup naturally puts the motor on the roof of the building.

46 posted on 06/18/2013 1:17:42 PM PDT by j. earl carter
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To: thackney

More and different problems require more and different solutions.

“Everything is theoretically impossible, until it is done.” Robert Heinlein........


47 posted on 06/18/2013 1:17:58 PM PDT by Red Badger (Want to be surprised? Google your own name......Want to have fun? Google your friend's names........)
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To: ShadowAce

I’ve been on the 55th floor of an office building....in the second bank of elevators...(only 825 ft.)
(and Sydney Tower, which I believe is 1000 ft.)

I have no interest in being in an office 3000 feet up!
(or more)

Do you?


48 posted on 06/18/2013 1:18:15 PM PDT by G Larry (Let his days be few; and let another take his office. Psalms 109:8)
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To: G Larry
Do you?

Not for about 11.5 years now.

49 posted on 06/18/2013 1:20:20 PM PDT by ShadowAce (Linux -- The Ultimate Windows Service Pack)
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To: Red Badger

Over that distance, the quality of the graffiti should be better.....


50 posted on 06/18/2013 1:21:21 PM PDT by G Larry (Let his days be few; and let another take his office. Psalms 109:8)
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