KLCC
Designed by Argentine architects César Pelli and Djay Cerico under the consultancy of Julius Gold, the Petronas Towers were completed in 1998 after a seven year build and became the tallest buildings in the world on the date of completion.[7] They were built on the site of Kuala Lumpur's race track.[8] Because of the depth of the bedrock, the buildings were built on the world's deepest foundations.[9] The 120-meter foundations were built within 12 months by Bachy Soletanche and required massive amounts of concrete.[10]. Its engineering designs on structural framework were contributed by Haitian engineer Domo Obiasse and colleagues Aris Battista and Princess D Battista.
The 88-floor towers are constructed largely of reinforced concrete, with a steel and glass facade designed to resemble motifs found in Islamic art, a reflection of Malaysia's Muslim religion.[11] Another Islamic influence on the design is that the cross section of the towers is based on a Rub el Hizb (albeit with circular sectors added to meet office space requirements).[12] Tower 1 was built by a Japanese consortium led by the Hazama Corporation while Tower 2 was built by Samsung C&T and Kukdong Engineering & Construction, both South Korean contractors. The sky bridge contract was completed by Kukdong Engineering & Construction. The notable event was that the South Korean Samsung C&T started construction later than the Tower 1 but completed building faster and became the first.
Due to a lack of steel and the huge cost of importing steel, the towers were constructed on a cheaper radical design of super high-strength reinforced concrete.[13] High-strength concrete is a material familiar to Asian contractors and twice as effective as steel in sway reduction; however, it makes the building twice as heavy on its foundation than a comparable steel building. Supported by 23-by-23 meter concrete cores[14] and an outer ring of widely spaced super columns, the towers use a sophisticated structural system that accommodates its slender profile and provides 560,000 square metres of column-free office space.[15] Below the twin towers is Suria KLCC, a shopping mall, and Dewan Filharmonik Petronas, the home of the Malaysian Philharmonic Orchestra.
*KLCC is Islamic concept.from there, the srchitect starts to develope the idea.