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ThyssenKrupp Multi – world’s first rope-free elevator [video]

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Re: ThyssenKrupp Multi – world’s first rope-free elevator [video]

#81

Post by nabla9 »

the8472 wrote: post #22
DanBlake wrote: post #9

Looks to be about.... 10? times the cost of a normal elevator if I had to guess. I bet the maintenance costs are fun as well. As such, doubt you will see these except in niche buildings (things like the porsche tower, etc..)

The tallest skyscrapers have issues with elevators because the cables can only be so long before they snap under their own weight, so you need elevator changing floors, which take up space and lower throughput. Either you find flexible materials with a higher tensile-strength to weight ratio than steel or you forego cables entirely.

Kone UltraRope carbon fiber core hoisting rope allows 1 kilometer.

Re: ThyssenKrupp Multi – world’s first rope-free elevator [video]

#82

Post by bikezen »

jjoonathan wrote: post #48
londons_explore wrote: post #32

My ideal elevator would accelerate at a pleasant 4 m/s^2 and have a jerk not exceeding 4 m/s^3. It would have doors that close instantly when the doorway is clear, and start right away. That would be able to take me up a 100 yard high building in 11 seconds. Why can't real elevators be like that? Why must the doors move slowly, and wait for 5 seconds before even starting moving? Why does the elevator reach a sluggish…

Don't forget the part where they disable the door close button and add a 10 second wait time! My favorite bit, though, is where they lock the escape hatch from the outside and provide no "alarm will sound" override mechanism. That way if the elevator dies you'll be stuck there for hours until they can get the fire department on the scene.

Forcing people to be stuck waiting for hours is usually preferable to having untrained and untethered people climbing around active elevator shafts N floors up.

Re: ThyssenKrupp Multi – world’s first rope-free elevator [video]

#83

Post by nabla9 »

kumarvvr wrote: post #18

Impressive video. The implementation looks complicated and might have reliability issues. Wonder what tech they use for traction while moving vertically.

They have to have a good plan for cases when things break and electricity is not available. Firemen and maintenance crews must be able to rescue people from the elevators stuck in positions with minimum training and tools.

Re: ThyssenKrupp Multi – world’s first rope-free elevator [video]

#84

Post by usrusr »

SomewhatLikely wrote: post #31

Accelerating and decelerating in line with gravity is a lot more forgiving on the occupants than lateral accelerations. Seems like this would put a big limit on horizontal movement.

True, but I guess that enough value will lie in just being able to put a whole fleet of cabins into a small number of one way shafts. Horizontal travel with people inside is a gimmick, but a very illustrative one. I expect early adopters to overuse it for showing off and later regret it quite a bit, for the reasons you stated.

Re: ThyssenKrupp Multi – world’s first rope-free elevator [video]

#85

Post by veli_joza »

dingo_bat wrote: post #37

This is awesome! Hopefully this means the elevator can now directly open into my apartment!

This is exciting possibility, but I would expect the builders will try to minimize the volume taken by shaft. Corridors are less expensive to build and maintain than these high-tech shafts.

Re: ThyssenKrupp Multi – world’s first rope-free elevator [video]

#86

Post by anoother »

danielvf wrote: post #77

The big benefit is that you get more than one elevator per shaft. For skyscrapers the amount of floor space wasted by elevators grows exponentially by the number of floors. Say you have a 5 story building that needs a one shaft elevator. 5 floors tiles 100 sqft per floor is 500 sqft of wasted shaft space. Then say you have a 10 story building that needs two shafts. Now you are wasting 10 floors times two shafts or 2,…

Paternosters. You say terrifying, I say fun.

There's one in Leicester University (not the only one in the UK, I'm sure).

Really not that dangerous, with a cable near the top of each aperture that triggers a stop if it's touched.

Re: ThyssenKrupp Multi – world’s first rope-free elevator [video]

#87

Post by [deleted] »

danielvf wrote: post #77

The big benefit is that you get more than one elevator per shaft. For skyscrapers the amount of floor space wasted by elevators grows exponentially by the number of floors. Say you have a 5 story building that needs a one shaft elevator. 5 floors tiles 100 sqft per floor is 500 sqft of wasted shaft space. Then say you have a 10 story building that needs two shafts. Now you are wasting 10 floors times two shafts or 2,…

[deleted]

Re: ThyssenKrupp Multi – world’s first rope-free elevator [video]

#88

Post by [deleted] »

danielvf wrote: post #77

The big benefit is that you get more than one elevator per shaft. For skyscrapers the amount of floor space wasted by elevators grows exponentially by the number of floors. Say you have a 5 story building that needs a one shaft elevator. 5 floors tiles 100 sqft per floor is 500 sqft of wasted shaft space. Then say you have a 10 story building that needs two shafts. Now you are wasting 10 floors times two shafts or 2,…

[deleted]

Re: ThyssenKrupp Multi – world’s first rope-free elevator [video]

#89

Post by itcrowd »

danielvf wrote: post #77

The big benefit is that you get more than one elevator per shaft. For skyscrapers the amount of floor space wasted by elevators grows exponentially by the number of floors. Say you have a 5 story building that needs a one shaft elevator. 5 floors tiles 100 sqft per floor is 500 sqft of wasted shaft space. Then say you have a 10 story building that needs two shafts. Now you are wasting 10 floors times two shafts or 2,…

This is right if you assume constant floor area for increasingly taller buildings. I think taller buildings require more floor space and that offsets the increase (at least somewhat).

Re: ThyssenKrupp Multi – world’s first rope-free elevator [video]

#90

Post by spookyuser »

danielvf wrote: post #77

The big benefit is that you get more than one elevator per shaft. For skyscrapers the amount of floor space wasted by elevators grows exponentially by the number of floors. Say you have a 5 story building that needs a one shaft elevator. 5 floors tiles 100 sqft per floor is 500 sqft of wasted shaft space. Then say you have a 10 story building that needs two shafts. Now you are wasting 10 floors times two shafts or 2,…

https://www.youtube.com/watch?v=YgJBD1wf-YQ Here is Tom Scott's video about the continuous loop elevator's.
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