From 1996 to 2003 this tower shared the world's tallest building title with Petronas Tower 2.
The architectural and engineering team was chosen on the basis of its experience with the Miglin-Beitler Skyneedle, a world's-tallest proposal from Chicago with a narrow concrete structure that was very similar to the Petronas design.
The security system includes a card access and alarm monitoring system, closed circuit television, a voice intercom, and a photo ID system.
The two towers have a total of 76 lifts, including 29 double-decker high speed passenger lifts in each tower. Each double-decker elevator can carry 26 persons.
The total construction costs for the two Petronas Twin Towers amount to $1,600,000,000.
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