The PETRONAS Twin Towers in Kuala Lumpur were the tallest buildings in the world from 1998 to 2004. They were designed by Cesar Pelli and used innovative construction methods. Industrialized Building Systems (IBS) were implemented, which involved prefabricating building components off-site and assembling them on-site. This allowed for higher quality, reduced costs and construction time, as components could be fabricated in a controlled factory environment and easily installed. IBS was key to the efficient construction of the Towers and their distinctive skybridge.

1. KLCC
PETRONAS TWIN
TOWER
WONG CHOONG LING @AUDREY 0314504
WONG HA SHIONG 0309640
YAP ZHI XIN 0314542

2. CONTENTS
• Background Information
• Type of structure and main materials used
• Industrialized building systems (IBS) implemented
during the construction of the towers
• Discuss on how IBS helped the construction of those
buildings/ structures
• Q&A

3. BACKGROUND INFOMATION
• Tallest buildings in the world (1998 – 2004)
• Designed by Argentine American architect, César Pelli,
along with Deejay Cerico, J.C. Guinto and Dominic Saibo
• 88 levels with the height of 452m
• Cost about US$1.6 billion
• Aim:
• Built up the confidence in every Malaysian
• Represents Malaysia’s increasing wealth and the
nation’s desire to feature more prominently on the
international stage

4. • As an internationally recognized landmark, the
PETRONAS Twin Towers symbolize the courage,
ingenuity, initiative, and determination, energy,
confidence, optimism, advancement and zest of a
nation." Stated by Tun Dr. Mahathir Mohamad,
Former Prime Minister of Malaysia (1981-2003).

5. TYPE OF STRUCTURE AND MAIN
MATERIALS USED
• Consists of a 4.5m thick piled raft which called barrettes.
• 23x23m concrete core located in the centre of tower
with outrigger beams ties the perimeter columns to the
cores

6. CONCRETE
Grade
M80
Most
Cost
Effective
High
Strength
Concrete
Central Core
Perimeter
Columns
Perimeter Ring
Beams
Outrigger Beams
Permitting Vertical
Core
Column Elements
 Relatively light
 Simple
connections in
joints
 Reduces the
building
response to
wind
Stabilize
STEEL
Typical
Longspan
Floor
Beams
 Supporting
concrete-filled
metal deck slabs
Tower
& Base
Innovative
Light Weight
Steel Framing
System Clad with stainless
steel extrusions
 Non-crane
erection
methods
 Provide
required fire
ratings

7. • The towers & base are clad with
stainless steel extrusions
• Custom made 20.38mm laminated
light-green glass.
• The curtain wall of each of the
triangular corners is flat 90° corner &
semicircular protrusions is faceted
• Vision glass below a stainless steel
sandrel with a grey glass sprandel
on top raises one floor & spans.

8. • Sunscreen brackets provide shading which give the
appearance of a continuous silver ribbon around
• The sunscreen is made of cast aluminum end caps, fixed
on brackets & finished with oven-cured PVF2
fluorocarbon paint
• Finishes material used:
• Local wood,
• Terengganu granite
• Marble

9. IBS IMPLEMENTED DURING THE
CONSTRUCTION OF THE TOWERS
• A process by which the parts of buiding are
conceived, planned and fabricated, then
transported and erected at the site - Junid (1986)
• Was used in the construction of the Petronas Twin
Tower as it saves times
• Steel beams of the floor are made in steel plants in
Malaysia and then installed into each of the floors
• Used steel frame as it is easy to fabricate and install

10. • IBS also Implemented the IBS is the skybridge
• The bridge was disassembled into 493 pieces and
shipped to Malaysia
• The bridge was pre-assembled into 5 components
• The pinnacles on top of the building, which
included a spire ball, the mast and a ring ball,
were also done by the same way

11. DISCUSS ON HOW IBS HELPED THE
CONSTRUCTION OF THOSE BUILDINGS
• It provides high quality products as the parts can
are fabricated in a factory
• It also allows the product to be controlled easily
and to high degree of precision
• Quality of the components can be maintained at a
consistent level
• The final product of IBS will be at high quality

12. • It saves time and costs
• Components fabricated off-site, less on site
workers are needed which reduces labor cost
• Time is saved as preparations are done in
advance and putting the pieces into place is
simple
• Weather will not be an issue during casting as the
components are casted in controlled environment
in the factory
• The construction will also be clean and neat with
the less used of timber, nails and steel