Petronas Twin Towers
Petronas Twin Towers - 88 - storey skyscraper. Height - 451.9 meters. Located in the Malaysian capital of Kuala Lumpur. Built in "Malaysian" style, that is, Islamic, because Malaysia is not his style. The Prime Minister of Malaysia proposed to form two intersecting squares, the architect added a semicircular projections for sustainability.
For construction companies enjoyed 6 years (1992-1998 years). Towers built two different companies to improve productivity. It turned out that the proposed building on the edge of fragile stone to one side and limestone - the rest of the territory. As a result, the building completely moved on soft ground, slide by 60 meters, and Have hammered piles - the largest concrete foundation in the world.
It features not only the enormous size, but also the complexity of the design. The area of the building premises - 213 750 m ², which corresponds to the area of 48 football fields. Sami tower occupy 40 hectares in the city. In the Petronas towers are located offices, exhibition and conference halls, art gallery.
Erection Petronas Twin Towers were the main customer - the state oil corporation "Petronas" - in 2 billion ringgit (800 million dollars). Part costs have assumed the other Malaysian firm, distributed among an office space of two skyscrapers. Interestingly, the two towers connected by indoor transition in the form of bridge.
Skyscraper has turned half heavier than similar steel. Washing windows 16 000 towers took one month. In the towers live and work 10 000 people.
The foundation is not easy construction steel, too expensive for Malaysia, a special elastic concrete, comparable to the strength of steel. Concrete the addition of quartz was supposed to withstand 20 thousand pounds per square. inch.
During construction had to disassemble a floor built because of the low-quality concrete.
In the towers no central rod and surplus places. When you install elevators in a limited space used excessive height of towers: double lifts done two in each mine.
Towers could withstand the attack of terrorists: losing 3 of 16 - ty bearing columns, they fabric. Additional security attaches airlift delivered at the giant ball bearings, as the tower and swinging bridge can not be firmly consolidated.