Burj Khalifa is the most famous and tallest skyscraper in the world. Built in the United Arab Emirates in 2010. Its spire, also the tallest in the world, is visible from virtually every corner of Dubai. Burj Khalifa is the main attraction of the city, which hundreds of thousands of tourists from all over the world seek to see.
Burj Khalifa – basic facts about the building
Outwardly, Burj Khalifa resembles a stalagmite striving to the sky. The building, which is 828 meters high, has 163 floors. It is called “a city within a city”, as the entire infrastructure is well developed inside the tower. There are swimming pools, apartments, offices, green spaces, shops and more.
Some interesting facts about the Burj Khalifa:
- the approximate cost of building a high-rise building is estimated at $ 1.5 billion;
- the construction site employed about 12,000 people;
- for the construction of the skyscraper, 320 thousand cubic meters of concrete and more than 60 tons of reinforcement were used;
- the world’s tallest restaurant is located on the 122nd floor;
- the air in the premises is saturated with a specially created aroma for it;
- the building is equipped with a system for collecting condensate, which is accumulated in the reservoir and is used to irrigate green spaces in the adjacent territory;
- parking on the underground floors of the building is designed for 3,000 cars;
- there are 57 elevators in the building, the average speed of which is 10 m / s.
The construction of one floor took about 5-7, and sometimes 10-14 days. Not without difficulties. Due to limited funding and untimely wages, workers often went on strike, which delayed construction.
Construction and design features of Burj Khalifa
Even at the design stage, the tallest building in the world was shrouded in mystery, since its height was not officially disclosed. They were always ready to correct it if the Burj Khalifa had a high-rise “competitor”.
The main architect was Adrian Smith, according to whose project the Jin Mao skyscraper in Shanghai has already been built. The general contractor was the construction company Samsung. Work on the world’s tallest building began in 2004. The goal is to build a unique “vertical city” with an independent infrastructure and even its own streets.
The foundation of Burj Khalifa was a concrete base in the form of a three-petalled desert flower – hymenokallis. It provides stability, supports enormous weight and divides the interior space into three main wings.
For the construction of the foundation, 200 piles, 45 m long and about 1.5 m in diameter, were used. Additional stability and strength of the tower was given by special counterweights – balls of steel and concrete with a total weight of 800 tons! They also neutralize fluctuations.
It is interesting! During the construction process, ice was added to the concrete and the mortar was poured only at night. Otherwise, the high daytime temperatures would have prevented the concrete from gaining the required strength. Moreover, its composition was developed specifically for the climatic conditions of the hot city of the United Arab Emirates.
Wind resistance is especially important for a skyscraper. Air currents flowing around a building of this height form vortices that tilt it to the side. To avoid the catastrophic consequences of this phenomenon, Burj Khalifa’s designers have moved away from angular architectural forms. They designed each “tower” so that the air vortices tilted the high-rise in different directions , losing their strength.
What’s inside Burj Khalifa
The Burj Khalifa skyscraper is luxurious not only outside, but also inside. Eminent designers worked on the interiors; the most modern and expensive materials were used for decoration. Engineering systems and technical equipment of the building amaze the imagination no less than its design.
The tower has three wings, each of which is divided into separate functional areas.
In the huge Burj Khalifa square you can find:
- Observation decks on the 124th and 148th floors – the rise to them by high-speed elevators takes about a minute, after which an amazing panorama of Dubai opens up to visitors (360-degree view); tickets are purchased on specialized sites or at the box office of the mall.
- Gourmet restaurant “Atmosphere” – above average check, 80 seats, luxurious interior; concept – “yacht in the sky”.
- Hotel Armani – unique interiors designed by Giorgio Armani are decorated with expensive designer furniture. Registration of visitors takes place in the rooms, individually; at the guests’ disposal are a spa center, restaurants, business halls, boutique shops, an outdoor terrace for 600 people.
- 900 residential apartments with a unique interior design, a full range of services, smart home systems and a cost of several million euros.
- Office space on 37 floors.
- Sports and health club (gyms, swimming pools, spa center).
There is also a library, a shop with gourmet products, a cigar club, parking.
To make Burj Khalifa as comfortable and as safe as possible, the designers have implemented the most modern engineering solutions.
Some of them are called “green”, as they are aimed at preserving the environment, reducing the consumption of natural resources. This:
- high-tech glazing system that maintains a certain microclimate in the premises;
- “Utilization” of heat for the operation of the ventilation system;
- using sea water instead of fresh water in the building’s cooling system.
30,000 thermal panels on the facade of the multifunctional center prevent the penetration of ultraviolet radiation inside, reducing the cost of cooling the premises.
Seven double technical floors, evenly distributed in height, and special solutions for the arrangement of equipment made it possible to neutralize the colossal pressure drops in engineering systems.
The system of high-speed elevators has also been carefully thought out. To shorten their waiting time, one has to climb to high floors with a transfer. The largest lift can accommodate 60 people! The emergency braking system is able to stop the cab in 1-2 seconds.
Interesting fact! The Khalifa Tower in Dubai is the first skyscraper to introduce an automated elevator evacuation system.
Decoration of the adjacent territory
Not only the architecture and infrastructure of the skyscraper deserves due attention, but also the design of the adjacent territory. The gardens and parks were conceived as a natural continuation of the building, a symbol of its fusion with the land.
The garden and park ensemble is 11 hectares of unique plantations in the form of exquisite flower beds and tree groves. You can admire them both while walking and from a bird’s eye view. The design of the gardens is dictated by oriental motives and was developed by John Wong.
When choosing plants, the preference was given to the local flora, but there are also “guests” from other countries among them. They are all resistant to drought and scorching sunlight.
Interesting fact! The parks and gardens of the Khalifa tower surprise and delight with their clear geometry. It was achieved thanks to the competent laying of pedestrian paths and careful selection of plants according to the color scheme.
Special attention should be paid to the network of artificial ponds with fountains, in the mirror surface of which the skyscraper is reflected. The largest fountain, the height of the jets of which reaches 150 m, is illuminated by 6,600 light sources at night.
Burj Khalifa is a luxurious, majestic building that is worth seeing to appreciate the work of thousands of people and leave an indelible mark on your memory.