The Malaysian tallest twin building - Petronas Twin Towers is the anchor project of Kuala lumpur City Center or KLCC. Standing at 451.9M high, it has two towers of 88-storey office building. The Towers were recorded as the world's tallest towers from 1998 to 2004. The tower’s foundationis is about 120-meter depth and were built by Bachy Soletanche with massive amounts of concrete. This is because the depth of the bedrock, the buildings were built on the world's deepest foundations.The towers are connected at the Level 41 and Level 42 by a sky bridge, 170 metres above street level. The towers are also joined at their base to form a six-level retail and entertainment complex with a central atrium. From the atrium, two ‘streets’, lined with over 300 shops, cafés and restaurants, extend along opposite axes. In addition, the complex includes an 880-seat concert hall, an art gallery, a specialized library and an interactive science discovery centre, as well as a four-storey underground car park for 5,400 cars.
KLCC comprises of:
- 88 storey Petronas Twin Towers
- Suria KLCC - the six-level, 1.5 million sq. feet shopping centre
- 49 storey Menara Maxis
- 30 storey Menara Esso
- 32 storey Mandarin Oriental Kuala Lumpur Hotel
- 20 hectare (50 acre) Public Park
- Masjid As-syakirin, a mosque which can accommodate 6,000 people
- 2 District Cooling Centres, which use natural gas to chill water for air-conditioning
Basic Information of The Towers.
- Construction - April 1993–(opened on Aug,31) August 1999
- Project cost - RM1.8 billion
- Design/Architecture - Cesar Pelli & Associates (US) in Association with KLCC architects
- Man at work - 7,000 on the site at the peak of construction and until 1997 there were 1,000 on each tower.
- Site area - KLCC: 40.5 hectares - Petronas & Retail: 5.8 hectares
- Built area - 218,000 m2 each tower - 994,000 m2 total Petronas complex
- Foundation - 4.5m thick raft foundation containing 13,200 m3 of grade 60 concrete, weighing approximately 32,550 tonnes under each Tower, supported by 104 barrette piles from 60m to 115m in length.
- Tower 1 constructed by The Mayjaus Joint-Venture led by Japan's Hazama Corporation, consisted of JA Jones Construction Co, MMC Engineering Services Sdn Bhd, Ho Hup Construction Co Bhd and Mitsubishi Corporation
- Tower 2 constructed by SKJ Joint Venture led by Samsung Engineering & Construction Co and comprised Kuk Dong Engineering & Construction Co Ltd and Syarikat Jasatera Sdn Bhd.
- Concrete(various strength up to grade 80) - 160,000 m3 in the superstructure (5.7mil ft3)
- Steel - 36,910 tonnes of beam, trusses and reinforcement
- Number of Storeys - 88
- Overall Height - 451.9m from street level. Original design was 421m.
- Height of Superstructure (without pinnacle) - 378m
- Height of Pinnacle - 73.5 meters
- Tip of longest pile to tip of pinnacle mast - 592.4m
- 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
- Design Consultant - Ranhill Bersekutu Sdn Bhd and Thornton-Tomasetti Engineers
- Fabricated and assembled by Samsung Heavy Industries of South Korea.
- Lifting of the skybridge by VSL Heavy Lifting.
- 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 m2
- Vision Glass - 77,000 m2
- No of windows - 32,000 windows
