Here comes another big one (structural tower)

[JAE]

How high can you build them?
Depends on the materials and logistics alone I guess:

https://www.yahoo.com/travel/saudi-tower-184530075.html

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[SlideRuleEra]

Atmospheric pressure change is exponential, at 18,000 ft. half the atmosphere is below you... half above you. In unpressurized aircraft, USAF requires flight crew members to be on oxygen starting at 10,000 ft. during daylight. At night, supplemental oxygen is required above 5000 ft. - night vision is the first sense affected. Passengers don't require oxygen until 14,000 ft. For pressurized aircraft the requirements vary depending on the type plane and the mission.

This does not conflict with the numbers that TME stated, just the difference between FAA and Air Force requirements.

http://www.SlideRuleEra.net

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[JAE]

I think the "dead zone" elevation at Mt. Everest is 24,000 ft. Above that most folks can't survive without oxygen.

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[GregLocock]

True, but even sleeping overnight at 8000 ft can cause fatal embolisms. The cerebral ones hurt, the pulmonary ones kill you quite quickly, if not treated. You do acclimatise but it takes time and exercise. That's why on an Everest trek they limit you to 1000 ft of effective ascent per day, and on your 'rest' days you are expected to climb up and down some local peak. This exercise helps you acclimatise.


Cheers

Greg Locock


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[TehMightyEngineer]

SRE: Yeah, for FAA it's a recommendation to use oxygen above 5000 feet at night but not a requirement.

Professional and Structural Engineer (ME, NH)
American Concrete Industries

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[Comcokid]

If you build it they will come buy condos to flip.

A lot of these impressive buildings in that area are mostly investments, and actual occupancy is not that high.

 

[msquared48]

Kinda like China, huh?

Mike McCann, PE, SE (WA)

 

[MartinLe]

Wikipedia has a bit more info:

https://en.wikipedia.org/wiki/Jeddah_Tower

... actually far that I read just now. little info on actual construction.

I 'like' this tidbit: "...much of the intention of Jeddah Tower is to be symbolic as well as to raise the surrounding land value rather than its own profitability."

I wonder if the same money wouldnt be better spent on a solar desalination plant. If you build a huge solar tower power plant (to drive RO), you'd even have an excuise to build a freakin high tower and one-up your neighbors.

 

[JNieman]

Dang, I thought my comment about oxygen was just going to be a random aside, separate from the core conversation... not a conversation starter on its own. lol. The internet at large should have taught me to know differently.

 

[BUGGAR]

JNieman, I'm glad I didn't ask the question about the hydraulic pressure on the sanitary sewers at the building base.

 

[msquared48]

What sewers?

Mike McCann, PE, SE (WA)

 

[ornerynorsk]

Hopefully they will plan for a better sewage handling scenario than the Burj Khalifa.

It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.

 

[allgoodnamestaken]

I'm sure it would be interesting to see how they design the structure and solve problems related to its massive size, but overall I find these giant penile structures boring.

 

[JAE]

...giant penile structures...

A very apt description!

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[JohnRBaker]

And yet they allow women to look at these "penile structures".

John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Digital Factory
Cypress, CA
Siemens PLM:
UG/NX Museum:

To an Engineer, the glass is twice as big as it needs to be.

 

[JNieman]

Yea, it's definitely an ego driven project, but I can't think of many humility-driven buildings that were all that interesting!

 

[drawoh]

I suppose it's a good thing no one paid Frank Lloyd Wright to design and build a mile high tower. Some of his every-day-sized buildings are falling apart after half a century.

I understand that most of his roofs leaked. In a tall tower, most of us would not be directly underneath the roof!

--
JHG

 

[msquared48]

Ron has always said that buried buildings are humble.

As for the Saudi tower, it would be far more functional if it went up and down.

Mike McCann, PE, SE (WA)

 

[JAE]

drawoh - FLW did have one tower built in Oklahoma:

http://www.pricetower.org/

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[JAE]

Here's the FLW tower in Oklahoma:

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[ornerynorsk]

Reminds me of the Citicorp Tower in NYC.

It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.