Roger's Equations Blog

Roger's Equations

This blog is all about science and technology (with occasional math thrown in for fun). The goal of this blog is to try and pass on the sense of excitement and wonder I feel when I read about these topics. I hope you enjoy the posts.

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The 1000 Meter High Kingdom Tower

Posted February 19, 2015 10:03 AM by Bayes

Right now, in Saudi Arabia, a skyscraper is being built that when completed will exceed 1 km in height. That's 3281 feet tall, taller than the Empire State Building (1,454 ft) and the Willis Tower** (1729 ft) combined. When completed in 2020, it will be the tallest building in the world. **Willis Tower was formerly known as the Sears Tower** I recently wrote an article about it:

Scraping the Sky: The 1 km-Tall Kingdom Tower

Jeddah, Saudi Arabia, has long served as a port for Muslims arriving by sea for the Hajj, the annual Islamic pilgrimage to Mecca. With a population of 5.1 million, Jeddah is the second largest city in Saudi Arabia and ranks as the largest city on the Red Sea. If all goes as planned, by 2020 pilgrims flooding the city will be treated to a modern marvel, a skyscraper more than 1 km in height called the Kingdom Tower.

Prince Al-Waleed bin Talal bin Abdulaziz al Saud, chairman and CEO of the Kingdom Holding Co., which is building the Kingdom Tower, has a vision for Jeddah. On a 5.2 km2 plot, 20 km north of Jeddah, he plans to build Kingdom City, an ultra-modern district. At a cost estimated at $20 billion, it will take 10 years to construct with the Kingdom Tower built in the center. At 1 km in height, the Kingdom Tower will soar over Kingdom City and Jeddah. Preliminary estimation places the cost at $1.23 billion for the tower alone, a price that is most likely to go up if the $1.5 billion price tag of the current tallest building in the world (at 830 meters), the Burj Kalifa in Dubai, UAE, is any indication.

The tower, already under construction, is slated to be finished by 2020. It will be the first building to exceed 1 km in height with 167 floors and a floor area of 319,000 m2. It will contain 59 elevators, 54 single and 5 double-deck elevators. The building will have the highest observation deck in the world at 500 meters. The architect is the American Andrain Smith, designer of the Burj Kalifa.

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#1

Re: The 1000 Meter High Kingdom Tower

02/19/2015 2:19 PM

There is mention in this article, of "soil composition" does this term include bedrock?

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#2
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Re: The 1000 Meter High Kingdom Tower

02/19/2015 2:39 PM

No, I think they mean the ground that sits over the bedrock. These buildings have a cantilever design to help the building resist wind shear. That cantilever depends on the base of the building being held firmly in place laterally by its structural elements and the weight of the soil around it's foundation. If the soil is too soft, the building could literally tip over in a strong wind (hurricane force) the way a tree with shallow roots can be uprooted in a storm.

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Re: The 1000 Meter High Kingdom Tower

02/19/2015 2:56 PM

Thanks Roger, being a non-engineer but having an interest in foundation design, I have often wondered what the ratio of above ground to below ground might be based on what is beneath. For example, I was surprised to see how tall the buildings became in the city of Miami (based on pre-1970's development), considering the soil/bedrock composition.

A friend of mine was involved in the construction of the Willis Tower caissons, and remarked upon people waiting to retrieve artifacts from the "first" Chicago.

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Re: The 1000 Meter High Kingdom Tower

02/20/2015 7:33 AM
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Re: The 1000 Meter High Kingdom Tower

02/20/2015 1:38 PM

Thanks, The NCE article mentioned "cyclic loading". Would it be safe to assume this would simulate wind loads?

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#4

Re: The 1000 Meter High Kingdom Tower

02/19/2015 4:51 PM

What's the Saudi Arabian word(s) for "Tower of Babel"?

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Re: The 1000 Meter High Kingdom Tower

02/19/2015 7:21 PM

برج بابل

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#7

Re: The 1000 Meter High Kingdom Tower

02/20/2015 8:59 AM

I just want to know. Is there an elevator to the top?

Why is the observation deck only half way up?

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