daily menu » rate the banner | guess the city | one on oneforums map | privacy policy | DMCA | news magazine | posting guidelines

Go Back   SkyscraperCity > World Development News Forums > Megatalls

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



Global Announcement

As a general reminder, please respect others and respect copyrights. Go here to familiarize yourself with our posting policy.


Reply

 
Thread Tools
Old October 4th, 2016, 08:00 PM   #15841
jogiba
Registered User
 
Join Date: Jul 2006
Posts: 264
Likes (Received): 434

Quote:
Originally Posted by Meehoowk666 View Post
it really is not that big of GFA; if you look at the other 3 winged megatalls you'll see: they all loose the cutout area between the wings, the many walls take space, the sometimes constant or periodically tapering limits aswell, the core takes away a big potential floorspace, the wing sections are not very wide compared to many rectangular, wide towers e.g. old 1&2 WTC with 63+m throughout to the roof or Willis Tower with even more at the lower section... this is why Jeddah Tower has the comparably tiny 243,866mē GFA until its 637.5m highest occupied floor, while 1 WTC had 400.000+ mē GFA until about 413m of its 417m roof and Willis tower, which tapers many times, has even 418.000mē GFA until its 412.7 m highest occupied floor of 442m to its rooftop on its smaller technical extension.

The other 3 Wing Megatalls are similar in GFA loss, while Burj Khalifa has 309,473mē GFA until its 584.5m because it has not constantly tapering but cutoff sections and a bit more spacious floors, compared to Jeddah Tower using its Walls as columns - Wuhan Greenland Center with 303,275mē GFA until its highest occcupied floor at 575m suffers from the same situation, though it saves space by using the megacolumns, the core is still very thick and the wing sections extend not that wide from the core - that would not be a problem if they were mostly advertised/designed for residential use as big appartments for less people are the primary intent there, as far as i know those megatalls are all mixed-use design; but isn't a big part of WGC for office space? i guess they don't need more than they designed

funnily, Shanghai Tower loosing huge potential space by the rounded tapering body and by the double walled design and big core still has 420.000mē GFA until its 561m high occupied floor, because of its wide base and still relatively wide floors to the top and effective disposition of rooms i guess

ST and the to the middle tapering China Zun Tower with 437.000mē GFA until its 515m high occupied floor really are the near future most spacious of the supertall and megatall single towers (excluding the complex forms like Abraj Al Bait with a total of 1.500.000mē combined GFA while the wide Makkah Royal Clock Tower has only 310,638 mē GFA until 494.4m, loosing potential GFA by the huge clocks technical space and the not as deep dimension as its front)

The 530m tall Guangzhou CTF Finance Centre tapers at its last 100+m of its 494.5m to highest occupied floor and still has 398,000 mē GFA, which is astounding, comparing its thinner body and less efficient space design compared to the old 1&2 WTC - Ping An IFC should be near that number while it has its highest occupied floor at 561.7m, because its loosing space at the cutout corners and top tapering combined with the big core and doesn't have too wide sides...

There still seems to be a mistery for me though: SWFC tapers already from below 150m to its ~440m rooftop at the hole loosing all the space up and by the splitting megacolumns below, only adding the observation deck floors at 474m and still exceeding the GFA of the almost not tapering ICC Hongkong;
GFA of SWFC is 381,600 mē; ICC has 274,064 mē of GFA until its 468.8m , still exceeding Jeddah Towers GFA to 637.5m though...

my thoughts:
ICC has a 10 story high atrium lobby, loosing space, while in SWFC the GFA of the podium was added; ICC has a wider core; can it have a higher average roof height at the sections with its highest floorspace if it has more floors??? - it looses a bit spoace at the corners aswell, but i guess much more through mechanical floors and other tech rooms... how do CTBUH count the space? did they cut the hotel floorspace?!

i'd be glad if someone could clear that mistery!
If you are mainly into floor area then this is your building with Floor area of 1,700,000 square metres (18,000,000 sq ft).
jogiba no está en línea   Reply With Quote

Sponsored Links
Old October 5th, 2016, 02:22 AM   #15842
AP Design
BANNED
 
Join Date: Aug 2016
Posts: 510
Likes (Received): 498

Quote:
Originally Posted by Tedious View Post
height makes her open her eyes in shock.
girth makes her close them in ecstasy.
Are you trying yourself in writing novels?
__________________

Meehoowk666 liked this post
AP Design no está en línea   Reply With Quote
Old October 5th, 2016, 03:09 AM   #15843
Meehoowk666
Registered User
 
Meehoowk666's Avatar
 
Join Date: Jun 2015
Location: A-Town
Posts: 37
Likes (Received): 48

well, you're right that there are much bigger buildings if you look at lowrise to ~100m tall (in the record-holder case) complexes like this New Century Global Center in Chengdu, BUT we talk about supertalls, which if you closely had read would notice

AND this was a response to another statement, that the GFA of Jeddah Tower is big, which it really isn't in relation to its dimensions...

often skyscrapers get built in areas with high real estate prices, so most contractors actually want a high amount of floorspace in relation to its footprint/amount of material used - this can be an exception with mostly/solely residential luxury highrises as often seen for example in NYC or Dubai, where towers often have between 30k-150k mē GFA

supertalls with more than 350k mē and especially 400k mē GFA are now very seldom, the importance of the figure comes from the old WTC "Twins" (which they weren't) and their interior 75% floorspace of the 100% footprint by the perimeter column design, a still unmatched relation, which can be used to measure those new skyscrapers where big floorspace is important - for example Shanghai Tower and other primarily office-use skyscrapers

Another aspect: some people care if the megatall/supertall still has usable floorspace to a certain percentage to its top, unlike the ones that have a big so called "vanity height" and are annoyed by big spires, then there's people who only count the "main body" until a taper with a percentage of the base width or average width, which reduces the tower to a very thin floorspace which is often still occupied, though - analogous to the rate where CTBUH decides what a building and a TV tower is, just more picky

but all this is just too vague, so the tip height and roof height (the roof is sometimes harder to define) seem to be good, not to say the best measures
__________________

AP Design liked this post

Last edited by Meehoowk666; October 5th, 2016 at 06:31 PM.
Meehoowk666 no está en línea   Reply With Quote
Old October 5th, 2016, 03:45 PM   #15844
skyline13
Registered User
 
skyline13's Avatar
 
Join Date: Aug 2015
Location: Yogyakarta Pontianak
Posts: 203
Likes (Received): 47

Quote:
Originally Posted by Hamcl View Post

wooowww
stunning
__________________
Catch Me If You Can

Miami High Rise, Osval, The hory liked this post
skyline13 no está en línea   Reply With Quote
Old October 5th, 2016, 07:50 PM   #15845
KillerZavatar
also known as Wally
 
KillerZavatar's Avatar
 
Join Date: Jun 2010
Location: Düsseldorf
Posts: 11,341
Likes (Received): 8240

Quote:
Originally Posted by AP Design View Post
Are you trying yourself in writing novels?
fifty shades of tedious
__________________

AnOldBlackMarble liked this post

Last edited by KillerZavatar; October 7th, 2016 at 10:32 PM.
KillerZavatar no está en línea   Reply With Quote
Old October 6th, 2016, 01:54 AM   #15846
Bottle
Not Registered User
 
Bottle's Avatar
 
Join Date: Jun 2015
Posts: 227
Likes (Received): 170

Quote:
Originally Posted by KillerZavatar View Post
fifty shades of tedious
fifty shades of bitterness.
Bottle no está en línea   Reply With Quote
Old October 6th, 2016, 02:36 AM   #15847
Naif Saudi
Moderator
 
Naif Saudi's Avatar
 
Join Date: Mar 2011
Location: JEDDAH
Posts: 8,580
Likes (Received): 7380

I enjoy when I see this tower every day I feel that the future of the city has begun
__________________

aaa.dexiner liked this post
Naif Saudi no está en línea   Reply With Quote
Old October 6th, 2016, 01:27 PM   #15848
naki
Registered User
 
naki's Avatar
 
Join Date: Apr 2014
Location: xian
Posts: 359
Likes (Received): 1341

Core jumping now!
__________________

fayzoon liked this post
naki no está en línea   Reply With Quote
Old October 6th, 2016, 03:49 PM   #15849
Rody69
Registered User
 
Rody69's Avatar
 
Join Date: Jun 2007
Location: Jeddah-London
Posts: 2,404
Likes (Received): 1918

the jump finished an hour ago
new floor in under process now
__________________
The more we think,,The less we know

K.S.A, Riyadh Crusher, Naif Saudi liked this post
Rody69 no está en línea   Reply With Quote
Old October 6th, 2016, 04:14 PM   #15850
Mr.Boss
Registered User
 
Join Date: Apr 2016
Posts: 120
Likes (Received): 139

So how many days since the last jump?
__________________

ChuckScraperMiami#1 liked this post
Mr.Boss no está en línea   Reply With Quote
Old October 6th, 2016, 04:41 PM   #15851
Hamcl
JeddahTower Updates
 
Hamcl's Avatar
 
Join Date: Oct 2015
Location: Jeddah , SaudiArabia
Posts: 279
Likes (Received): 1580



__________________
http://i.imgur.com/v8BV8pj.png
My Beautiful Jeddah
Hamcl no está en línea   Reply With Quote
Old October 6th, 2016, 05:17 PM   #15852
naki
Registered User
 
naki's Avatar
 
Join Date: Apr 2014
Location: xian
Posts: 359
Likes (Received): 1341

Quote:
Originally Posted by Mr.Boss View Post
So how many days since the last jump?
11 days.
__________________

ChuckScraperMiami#1 liked this post
naki no está en línea   Reply With Quote
Old October 6th, 2016, 05:48 PM   #15853
Rody69
Registered User
 
Rody69's Avatar
 
Join Date: Jun 2007
Location: Jeddah-London
Posts: 2,404
Likes (Received): 1918

Quote:
Originally Posted by naki View Post
11 days.
it was actually 10 days between the two "Core" jumps, with one jump for each of the three wings.
__________________
The more we think,,The less we know

ChuckScraperMiami#1 liked this post
Rody69 no está en línea   Reply With Quote
Old October 6th, 2016, 08:17 PM   #15854
AP Design
BANNED
 
Join Date: Aug 2016
Posts: 510
Likes (Received): 498

Quote:
Originally Posted by Meehoowk666 View Post
... the tip height and roof height (the roof is sometimes harder to define) seem to be good, not to say the best measures
We can't really say this building's design has a roof, because if we do - we have to admit it's entirely covered with a sloped roof of glass. Nominally, it can have R1, R2, R3 etc. on the top, all serving as technical floors, but they will have no relation to a roof as such.
__________________

ChuckScraperMiami#1 liked this post
AP Design no está en línea   Reply With Quote
Old October 6th, 2016, 08:17 PM   #15855
alsaif2012
El Seif Engineering
 
alsaif2012's Avatar
 
Join Date: Apr 2013
Location: jeddah
Posts: 551
Likes (Received): 6789

06/10/2016










































































__________________

Last edited by alsaif2012; October 6th, 2016 at 10:40 PM.
alsaif2012 no está en línea   Reply With Quote
Old October 7th, 2016, 12:17 PM   #15856
delphi7x10
Registered User
 
Join Date: Aug 2005
Posts: 83
Likes (Received): 41

Quote:
Originally Posted by Meehoowk666 View Post
well, you're right that there are much bigger buildings if you look at lowrise to ~100m tall (in the record-holder case) complexes like this New Century Global Center in Chengdu, BUT we talk about supertalls, which if you closely had read would notice


supertalls with more than 350k mē and especially 400k mē GFA are now very seldom, the importance of the figure comes from the old WTC "Twins" (which they weren't) and their interior 75% floorspace of the 100% footprint by the perimeter column design, a still unmatched relation, which can be used to measure those new skyscrapers where big floorspace is important - for example Shanghai Tower and other primarily office-use skyscrapers
OK, yes it true the WTC had enormous floor space, this was be design to maximize the rentable area. So to achieve they had no huge concrete core, no columns in the open floor space to block window views, and only two place of support for each floor. Sadly we saw the flaw in that design, as those towers showed a weakness in that design. Now look at the replacement, and they have gone to far side of the opposite extreme.
__________________

ChuckScraperMiami#1 liked this post
delphi7x10 no está en línea   Reply With Quote
Old October 7th, 2016, 04:41 PM   #15857
Tom_Green
Dr.Med. Tom Green
 
Join Date: Sep 2004
Location: Frankfurt
Posts: 5,368
Likes (Received): 3402

Somehow i was afraid we would not get enough updates of the construction. But the opposite is happening. Thanks to all the photographers, gif creators and update posters from other sources.
__________________
My trips around the World

Tom_Green no está en línea   Reply With Quote
Old October 7th, 2016, 07:22 PM   #15858
TallestKidOnTheBlock
Registered User
 
Join Date: Oct 2015
Posts: 82
Likes (Received): 131


On the plans there seems to plenty of floor space, however when you look at the construction pictures of the actual building, it looks like 75% of each floor is solid concrete. Honestly, guys, do those floors even look occupiable to you?
__________________

ChuckScraperMiami#1, Buffaboy liked this post
TallestKidOnTheBlock no está en línea   Reply With Quote
Old October 8th, 2016, 06:18 AM   #15859
trustevil
Registered User
 
Join Date: Apr 2015
Posts: 527
Likes (Received): 386

It's so massive that in relation to the core the floor space is actually high
__________________

ChuckScraperMiami#1 liked this post
trustevil no está en línea   Reply With Quote
Old October 8th, 2016, 02:30 PM   #15860
naki
Registered User
 
naki's Avatar
 
Join Date: Apr 2014
Location: xian
Posts: 359
Likes (Received): 1341

__________________
naki no está en línea   Reply With Quote


Reply

Tags
hypertall, jeddah economic city, jeddah tower, kingdom tower, megatall, tallest

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Related topics on SkyscraperCity


All times are GMT +2. The time now is 01:59 AM.


Powered by vBulletin® Version 3.8.11 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions Inc.
Feedback Buttons provided by Advanced Post Thanks / Like (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.

SkyscraperCity ☆ In Urbanity We trust ☆ about us | privacy policy | DMCA policy

Hosted by Blacksun, dedicated to this site too!
Forum server management by DaiTengu