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PETRONAS TWIN TOWERS

DESIGN + STRUCTURE

WORLD'S TALLEST TWIN BUILDING

The twin towers were originally proposed to be built at a height of only 1400 feet (427m). Thankfully, the vision for greater potential in the building as the world's tallest structures led to architects and engineers pressing for additional height in every possible way. To meet these ambitions, many structural aspects were recalculated and retested in wind tunnels. This resulted in the addition of a dome with an integrated pinnacle atop the towers, successfully reaching 1483 feet (452m) tall, surpassing the Sears Tower in the USA.

  • 451.8m

    PETRONAS Twin Towers,
KL

  • 355m

    JW Marriot Marquis Dubai

  • 354m

    Emirates Tower, Dubai

  • 335m

    Huaguoyan Towers, Guiyang

  • 301m

    City of Capitals, Moscow

  • 270m

    The Cullinan, Hong Kong

  • 265m

    Al Kazim Towers, Dubai

  • 262m

    Grand Gateway, Shanghai

The Design

The interior motifs are designed to resemble Malaysia’s local handicrafts and weaving patterns, with a stunning combination of stainless steel and glass finishing on the building to form beautiful Islamic patterns. The design of each tower floor plate is based on simple Islamic geometric forms of two interlocking squares, creating a shape of an eight-pointed star. Architecturally, these forms represent the important Islamic principles of unity, harmony, stability and rationality.

Islamic Patterns ; Rub El Hizb

The towers were designed by a renowned Argentine architect – César Pelli. The first design fell just a bit short of The 4th & 7th Prime Minister Mahathir’s satisfaction, as he felt that there was more room to insert something uniquely Malaysian in the design. He wanted a building that would be identifiably Malaysian, was of world class standard, and which Malaysians will inevitably be proud of.

Through a series of edits, eventually, the The 4th & 7th Prime Minister understood what he wanted the towers to resemble; an eight-pointed star (when seen from the top), which represents unity, harmony, stability, and rationality in the Islamic cultures.One concern Pelli had for the new design is the limited floor space.

To overcome this concern, he added semicircles to each of the inner angles. Each tower now has a total of 43,600 square yards (36,455 m2) of floor space, including an additional circular annex referred to as ‘bustle’, standing 44 stories high.

THE STRUCTURE

The structure

Both towers are 'intelligent' structures, built with a system that seamlessly and simultaneously coordinates telecommunications, environment control, power supply, lighting, fire and smoke control, and building security.

88 Storeys

Each tower is 88 storeys high with 5 underground levels for car park and mechanical services.

452 Meters

Each tower measures 452m in height - from ground to 
tip which - and is the equivalent of 1,483 ft.

600k Tonnes

Each tower weighs 300,000 tonnes which is 
equivalent to about 42,857 adult elephants.

395,000 sqm

The towers have 395,000m² build-up area, with 213,750m²
 free space for use and 186,000m² annexes.

THE CONSTRUCTION

THE CONSTRUCTION

The construction of PETRONAS Twin Towers took 6 years and costed the country a fortune of over RM 6 billion (USD $1.6 billion) to complete. Built with 899,000 ft² of stainless-steel extrusions, the building was surprisingly void of heat and UV rays, thanks to the addition of 590,000 ft² of lamination glass over the surface of the skyscraper which would require 2 whole months just to clean each and every single glass panel!

6 YEARS

Took 6 years of construction from foundation until opening

USD $1.6 BILLION

Costed USD $1.6 billion to erect both towers

THE LARGEST FOUNDATION

THE LARGEST FOUNDATION

Skyscrapers need strong, deep foundations that penetrate into the ground below. Given the tremendous height of the towers, the PETRONAS Twin Towers have a ground-breaking 120 meters (approx. 400 ft.) of solid foundation underneath its dense concrete footings.

12 Months

Foundations were completed within 
12 months by Bachy Soletanche

120 Meters

120 m (400 ft) deep under the ground

THE OBSERVATION DECK

THE OBSERVATION DECK

The observation decks in PETRONAS Twin Towers are located at Level 86 of both towers. The deck allows visitors to enjoy the a spectacular view of the cityscape from above 370 meters. Visitors will also get to discover the history of the twin towers in detail through digital displays and exhibition.

86th Floors

Located on 86th floor, the second 
highest level of the twin towers.

370 Meters

Superior bird’s-eye view from 
370 meters above the ground.

THE SKY BRIDGE

THE SKY BRIDGE

Weighing 750 tons, the double-decker skybridge acts as the connector between the two towers on the Level 41 and 42. Interestingly, the skybridge is not fully attached to the main building - engineers deliberately designed the skybridge this way to give allowance for small movements during high winds and other unpleasant weathers. This prevents the bridge from breaking away from the towers. The bridge measures 170m (558 ft) above the ground and 58.4m (192 ft) long.

58.4 Meters

Located on 86th floor, the second 
highest level of the twin towers.

170 Meters

170 m (558 ft) high above the ground

PLAN A VISIT TO PETRONAS TWIN TOWERS

Book now to explore the tallest twin towers im the world.

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