CONSTRUCTiON

Skyscraper is a tall continuously habitable building having multiple floors. Modern sources define skyscrapers as being at least 100 meters (330 ft) or 150 meters (490 ft) in height, though there is no universally accepted definition, other than being very tall high-rise buildings. Skyscrapers may host offices, hotels, residential spaces, and retail spaces. One common feature of skyscrapers is having a steel frame that supports curtain walls. This idea was invented by Viollet le Duc in his discourses on architecture. These curtain walls either bear on the framework below or are suspended from the framework above, rather than resting on load-bearing walls of conventional construction. Some early skyscrapers have a steel frame that enables the construction of load-bearing walls taller than of those made of reinforced concrete. Modern skyscraper walls are not load-bearing, and most skyscrapers are characterized by large surface areas of windows made possible by steel frames and curtain walls. However, skyscrapers can have curtain walls that mimic conventional walls with a small surface area of windows. Modern skyscrapers often have a tubular structure, and are designed to act like a hollow cylinder to resist wind, seismic, and other lateral loads. To appear more slender, allow less wind exposure and transmit more daylight to the ground, many skyscrapers have a design with setbacks, which in some cases is also structurally required. As of September 2023, fifteen cities in the world have more than 100 skyscrapers that are 150 m (492 ft) or taller: Hong Kong with 552 skyscrapers; Shenzhen, China with 373 skyscrapers; New York City, US with 314 skyscrapers; Dubai, UAE with 252 skyscrapers; Guangzhou, China with 188 skyscrapers; Shanghai, China with 183 skyscrapers; Tokyo, Japan with 168 skyscrapers; Kuala Lumpur, Malaysia with 156 skyscrapers; Wuhan, China with 149 skyscrapers; Chongqing, China, with 144 skyscrapers; Chicago, US, with 137 skyscrapers; Chengdu, China with 117 skyscrapers; Jakarta, Indonesia, with 112 skyscrapers; Bangkok, Thailand, with 111 skyscrapers, and Mumbai, India with 102.[4] As of 2024, there are over 7 thousand skyscrapers over 150 m (492 ft) in height worldwide.
https://www.youtube.com/watch?v=mC6EjyvktW4
Tallest Building in Dubai (Full Episode) | Superstructures: Engineering Marvels | Nat Geo
https://www.youtube.com/watch?v=NJI8mOv4VW4
World's Tallest Tower: Burj Khalifa - Dubai's Vertical City | Free Documentary
https://www.youtube.com/watch?v=QCfr7gS53kc
Burj Khalifa – Skyscraper Supremacy – Big Bigger Biggest (Part 1)
https://www.youtube.com/watch?v=KWCWY5CAK8o
Rising Above NYC: The Ingenious Engineering of 53 West 53rd | Blueprint
https://www.youtube.com/watch?v=5RSs8fodpoA
China's Tallest Building: Shanghai Tower | China's Mega Projects | Free Documentary
https://www.youtube.com/watch?v=3srSlk5-P9w
Shanghai Super Tower: The 60,000 Ton Behemoth Made Out Of Steel | Megastructures Episode 4
https://www.youtube.com/watch?v=Y2irptBxO34
Building the World's Tallest Skyscraper after Burj Khalifa [FULL DOCUMENTARY] | Merdeka 118
https://www.youtube.com/watch?v=yl0DpG8uiNc
Megastructures: Building the Burj Al Arab | Dubai Engineering Documentary | Reel Truth Science