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Megatalls Discussions of projects under construction at least 600m/2,000 ft tall.



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Old October 20th, 2017, 05:49 PM   #2281
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Quote:
Originally Posted by Dave-in-Toronto View Post
Is the core no longer rising something that is planned, or could it indicate a delay?
It seems that this pause is connected with replacing of old and installing of new cranes. Another question is that this action has been excessively prolonged.
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Old October 20th, 2017, 10:20 PM   #2282
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Amazing what human kind can create!
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Old October 22nd, 2017, 05:17 PM   #2283
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Old October 23rd, 2017, 05:32 AM   #2284
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Quote:
Originally Posted by ZZ-II View Post
Floor 163 in Burj Khalifa is at 638m. But not sure if the floor still has a normal use.
First to all other users i apologize for this long offtopic post, but i think i should try to answer ZZ-II's question as good as i can.

The highest occupied level of Burj Khalifa is sometimes stated to be a prayer room, which is on Level 160, originally supposed to be a mechanical level with space for a tuned mass damper for earthquake protection. However it was calculated that this was unnecessary, which left an empty space where the damper would have gone. The developer decided to put a prayer room in there - it being the highest point in the building you could feasibly put an occupied space.

Above this level is various technical equipment, such as chillers, pumps, and broadcast equipment. Keep in mind the much more limited floorspace at that setback stage (Tier 18A) and all the space needed for cabling, etc connecting the above mechanical/tech floors.

This new prayer room was sometimes referred to in the press as a mosque, leading to the urban myth that it is the highest mosque in the world.

It does not have regular meetings so technically it is not a mosque, it is a prayer room. It probably isn't in use (often) as of now, so maybe that's the reason the highest (permanently?) occupiued floor is stated as being the 154th by CTBUH. The council considers Occupiable as: "this is intended to recognize conditioned space which is designed to be safely and legally occupied by residents, workers, or other building users on a consistent basis. It does not include service or mechanical areas which experience occasional maintenance access, etc."

If or which of the uppermost corporate floors are permanently used as of now i don't know, so i wouldn't safely call the 154th as highest occupied but occupiable floor.

Sometimes the 163rd along the other two mezzanines and level 160 are all treated as one "160th" floor, because it is stated to have become the tallest free-standing structure when reaching 160th, which can only be above 628.8m if it wasn't erroneously rounded up. http://www.burjkhalifa.ae/en/the-tower/design.aspx

However i don't feel like struggling most in finding out the floors use but the exact heights throughout the building; maybe you could help?

I hope there is an accurate (BIM?) Model out there which provides exact heights (i guess sadly no program to open such an extensive computer model will be free or low cost)

I think the dimetric projection on Wikipedia (english and german articles for example) are pretty accurate, almost nothing i came across was comparably satisfying in the presentation. While anything can be subject to error, i don't expect it from CTBUH.

I hope the height of the (top of the?) 3d Mezzanine of the 160th floor you stated is correct. As for the following sources:

555.7m @148th (SKY Observation deck)
584.5m @154th (highest occupied floor: corporate suites)
https://www.skyscrapercenter.com/bui...burj-khalifa/3

589.3m @155th (mechanical)
156th-159th (telecommunication/broadcast systems)
621.3m @160th (mechanical -163th)

on top of that 46 spire levels and 2 below ground parking totalling in theoretically 211; of the 163 floors 9 are for maintenance and 154 are usable
https://en.wikipedia.org/wiki/Burj_K...servation_deck

Even if the 638m are meant to be the floorplate of the 3d Mezz, an Average of 5.56m per floor sounds still logical i guess, if it was meant to be the roof of the 3d an Average of 4.18m would result; "LEVEL 160" and "LEVEL 160 MEZZ. (3)" are shown to be the higher ones here; see picture of "Lvl 156 to section 22B" http://www.burjdubaiskyscraper.com/facts.html


what's still confusing to me:

one source and this video of 2008 https://www.youtube.com/watch?v=j3B2KRj844w stated the concrete to "go up to level 156/Tier 16 at 585.7m above ground: the measurement was made from the total height of the concrete starting from the raft @-15.25m below ground level - that's why the concrete top is often credited as being 601m, which is the total concrete structures height, but not above ground"

Since the 155th stated in CTBUH and Wiki are higher than the previous 156th , i guess the design changes could explain the differing numbers, or the source is wrong; since the construction timetables of the above photo link's website are matching the french youtube animation, though the explanation of the measurement method from the concrete mats sounds true and the timetable is very extensive, but could it be wrong or outdated at some point?

as i see it the numbers differ no matter how i try to compensate for measurement method/starting point, maybe i don't see my error here...

In this slideshare one slide states the direct pumping going to in excess of 585m https://www.slideshare.net/safaamoha...alifa-48217403

this paper from 2013 also states the concrete only going up to "586m" above ground https://www.researchgate.net/publica...considerations

I really don't know if i see something that isn't there but to me either some of the Wiki heights are false or some in the construction timetable presented in the link...


Thank you in advance, i hope i could initially answer your question, and if someone gets annoyed: sorry to distract in this thread.
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Old October 23rd, 2017, 07:37 AM   #2285
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I understood, but and the highest floor in greenland center?
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Old October 28th, 2017, 05:15 PM   #2286
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Old October 29th, 2017, 08:05 PM   #2287
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Old October 29th, 2017, 08:24 PM   #2288
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Wow, the cladding is turning out so nicely on this building
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Old October 29th, 2017, 10:13 PM   #2289
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So we yet don't know whether it will finally be 636 metres or shorter?
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Old October 30th, 2017, 12:06 AM   #2290
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For sure at least 636m.
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Old October 30th, 2017, 02:29 AM   #2291
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Quote:
Originally Posted by SiriusCane View Post
For sure at least 636m.
So the airport restrictions are over now? Sources?
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Old October 30th, 2017, 10:03 AM   #2292
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Quote:
Originally Posted by Rui-Silva View Post
Thats old and fake news.
Dont worry guys, this has already been clarified in gaoloumi by whhb123 and RickyBlaine 1 month ago. The project continues with 636m and 120 floors.

http://www.gaoloumi.com/forum.php?mo...ad&tid=2904071
Plus a crane is certainly already taller than the limit.

Quote:
Originally Posted by Dave-in-Toronto View Post
Definitely no shortening of the building if they're adding the third crane! :-)
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Last edited by SiriusCane; October 30th, 2017 at 01:02 PM. Reason: Mistake when quoting
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Old October 31st, 2017, 07:15 AM   #2293
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There's no for sure thing saying that the final height would be shortened except that rumor about airport restrictions but the court hasn't risen for some reason.
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Old October 31st, 2017, 12:00 PM   #2294
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any information why the core didn't rise anymore over the last weeks?
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Old October 31st, 2017, 03:13 PM   #2295
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Maybe it (the core) already reached the final height?
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Old October 31st, 2017, 09:41 PM   #2296
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Doesn‘t look like that to me.
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Old November 7th, 2017, 09:31 AM   #2297
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Old November 8th, 2017, 05:36 PM   #2298
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Old November 10th, 2017, 05:10 AM   #2299
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Quote:
Originally Posted by ZZ-II View Post
Floor 163 in Burj Khalifa is at 638m. But not sure if the floor still has a normal use.
Well,I just found a picture from Gaoloumi,shows the elevator shaft height,cant believe that Burj Khalifa's only 504m,and so far, Shanghai Tower have the world's highest elevator shaft height.

If its ture,How can people go to the rest higher floors of Burj Khalifa,another small elevator system beyond the main elevator?

No disrespect,just confused.

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Last edited by CHINA0086; November 10th, 2017 at 06:35 AM.
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Old November 10th, 2017, 08:06 AM   #2300
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The 504m are definitely wrong. The 2nd Observation Deck is at 555m which you reach by elevator.
I‘m pretty sure the highest point for the elevator is at 600m+
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