PETRONAS Twin Towers At A Glance

Number of storeys	88
Height	452 meters above street level
Total built-up area	341,760 sq.meters ( 3.7 million sq. feet)
Design/Architecture	Cesar Pelli & Associates [U.S.] in association with KLCC architects.
Location of skybridge	Levels 41 and 42
Length of skybridge	58.4 meters
Height of skybridge	170 metres above street level
Vertical transportation	29 double-deck high speed passenger lifts in each tower
Number of escalators	10 in each tower
Stainless steel cladding	65,000 sq. metres
Vision glass	77,000 sq. metres
Concrete [various strengths up to grade 80]	160,000 cubic metres in the superstructures [see also foundation description below]
Steel	36,910 tonnes of beams, trusses and reinforcement
Foundation	4.5 metre [15 feet] thick raft containing 13,200 cubic meters of grade 60 reinforced concrete, weighing approximately 32,550 tonnes under each Tower, supproted by 104 piles varying from 60 to 115 metres in length.