At the beginning of August 2017, there are 95 ultra-high skyscrapers in the world. Architects around the world are trying to surpass previous achievements. With the development of technologies, the invention of modern building materials and the creation of fundamentally new structures, it became possible to erect buildings above 300 meters. Until the 19th century, increasing the height of buildings meant thickening the walls, which had to support the weight of the structure. Creating elevators and metal frames for walls freed the hands of architects and engineers. Now the tallest buildings in the world are striking in their grandeur and technical novelty.
2017 was a record year for the construction of skyscrapers, according to Designtalk. Last year, the construction of 144 skyscrapers with a height of more than 200 meters was completed. Tall buildings appeared in 69 cities in 23 countries, which is significantly more than in 2016 (54 cities and 18 countries).
Burj Khalifa, Dubai (UAE)
The tallest buildings in the world. Burj Khalifa.
Burj Khalifa (Arabic for “tower of the Khalifa”) is the tallest building in the world. Its height is 828 meters, with 180 meters falling on the spire. Construction of the skyscraper began in 2004. The average speed of construction is 1-2 floors per week. The Foundation of the Burj Khalifa is not fixed in the rock. The Foundation of the building used hanging piles with a length of 45 m and a diameter of 1.5 m. There are about 200 such piles in total. The shape of the building is asymmetric to reduce the effect of swaying from the wind. Four thousand people took part in the construction. The construction of the skyscraper lasted for 5 years. Continue reading