Petronas Twin Towers

Petronas Twin Towers

Soaring at a height of 451.9 metres into the atmosphere, with total build up area of 395,000 sqm, the Petronas Twin Towers have redefined forever the skyline of Kuala Lumpur.

Project Details

Project Owner

KLCC Property Holdings Berhad


Cesar Pelli Associates Inc.


Kuala Lumpur

Project Type





Structural Decking System


Lysaght® Bondek® II



Completion Year

Officiated in 1998

Climbing almost half a kilometre into the atmosphere, the Petronas Towers have redefined forever the Kuala Lumpur skyline.

Designed by Cesar Pelli, the S$1 billion towers symbolize optimism and surging economy that puts Malaysia on the map in a way unthinkable to most outsiders just decades ago. The Petronas towers provide a combined total of 395,000 sqm of building area and house the nation’s major petroleum producer, Petronas on Tower One while Tower Two comprises of mixed tenancies.

Decorated with traditional Islamic designs, each tower incorporates a structural steel spire which begins at level 88. The 450-metre building has its two towers joined by a double storey skybridge 58.4 metre long and weighing 325 tonnes.

At the height of construction, new levels were completed every four days – thanks in part to the use of some 4,000 tonnes of Lysaght® Bondek® structural steel decking for composite floor slabs.

The twin towers are joined ‘at the waist’ by a two-level skybridge, itself a feat of engineering excellence designed to withstand typhoon-strength winds.


Lysaght® Bondek®

The Bondek® is an efficient, versatile and robust structural decking and ceiling system for concrete slabs in conventional as well as composite slab design.