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Petronas Twin Towers

Date of Completion

1998 (Opened Aug 31, 1999)

Number of Storeys

88

Overall Height

451.9m from street level (1483ft)

Design/Architecture

Cesar Pelli & Associates (US) in association with KLCC architects

Height of Superstructure
(without pinnacle)

378m (1240ft)

Tip of longest pile to tip of pinnacle mast

592.4m (1944ft)

Total built-up area

341,760 sq. m. (3.7 mn sq. ft.)

Location of Skybridge

Levels 41 and 42

Length of Skybridge

58.4m (192ft) double-decked

Height of Skybridge

170m from street level (558ft)

Weight of Skybridge

750 tonnes

Skybridge Support

Two-hinge arch with rotational pins (spherical bearings) at Level 29, rising 63 degrees

Vertical Transportation

Total= 76 lifts. 29 Double-deck high speed passenger lifts in each tower. Each double-deck can carry 26 persons.

Number of escalators

10 in each tower

Stainless Steel Cladding

65,000 sq m (700,000 sq ft)

Vision Glass

77,000 sq m (830,000 sq ft)

Concrete
(various strength up to grade 80)

160,000 cu m in the superstructure (5.7mn cu ft)

Steel

36,910 tonnes of beam, trusses and reinforcement

Foundation

4.5m (15 ft) thick raft containing 13,200 cu m of grade 60 concrete, weighing approximately 32,550 tonnes under each Tower, supported by 104 barrette piles from 60m to 115m in length.

Building Control System

Central management of air-conditioning and lighting

Building Security System

Card Access and Alarm Monitoring System, Closed Circuit Television System (CCTV), Voice Intercom System, and Photo Identification System.


THE DESIGN

The floor-plate of the Tower is designed based on geometric patterns common in architecture of Islamic heritage. It is composed of two rotated and superimposed squares with small circular infills. These geometric figures have been described by architects as symbolizing unity, harmony, stability and rationality - all important principles of Islam.

PETRONAS Twin Towers

Like the exterior design, the Towers' entrance design was also inspired by the country's cultural heritage, incorporating contemporary Malaysian motifs adapted from traditional handicrafts such as "songket" and timber carvings. The overall character of the building is high-tech and international but distinctively Malaysian.

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