The Petronas Twin Towers are acclaimed to be the tallest twin buildings of the world. Located at KLCC complex in Kuala Lumpur, Twin Towers undoubtedly are the pride of Malaysia. These buildings were constructed during 1992-1998 though were officially opened in 1999. They were assumed to be world's tallest structure from 1998 till 2004, however, the construction of Taipei 101 surpassed them with its additional 13 floors in 2004. Petronas, the national oil company of Malaysia, embarked to build the tallest building in the world.
Cesar Pelli, an Argentine-American architect, designed these towers that were tallest in the world on the date of completion. The 88-floor towers are raised mainly of reinforced concrete, with their façade crafted in steel and glass. Petronas Towers are a glistening example of modern hi-tech architecture and reverence of established religion, as the marvelous facade bears motifs found in Islamic art. Since the bedrock was deep, the buildings came to be known as the towers erected on the world's deepest foundations. The 120-meter foundations called for huge amounts of concrete and were laid by Bachy Soletanche. Whilst Tower 1 was built by the South Korean multinational-Samsung Engineering & Construction, Hazama Corporation of Japan constructed the Tower 2. They were built on a cheaper radical design of high strength reinforced concrete as a consequence of lack of steel and massive cost of importing steel. However, this high-strength concrete made the building twofold heavy if compared with a steel building.
The Petronas Twin Towers make use of sophisticated structural system, supported by 23-by-23 meter concrete cores and an outer loop of widely-spaced super columns, which maintains their slender profile. This entire forecast now crafts 1300-2000 square meters of column-free space for office at each floor. Regarding the tenants, Tower One is utterly occupied by the Petronas and its subsidiaries and associate companies. In Tower Two, the office spaces are mainly obtainable for lease to other companies.
The skybridge also works as a safety device, seeing as in case of fire or other emergency in one tower, tenants can evacuate by crossing the bridge to the other tower. Up till 2004, Petronas Towers were the world's tallest buildings on measured from the main entrance to the structural top, the initial height reference used by the US-based Council on Tall Buildings and Urban Habitat from 1969. Since the height computation reference is vague, at times, controversies have cropped up regarding the procedure.
#taken from : Petronas Twin Towers
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