PETRONAS TWIN TOWER,
KUALA LUMPUR, MALAYSIA
-COBRA TEAM-
Project Manager:
Wan MHW Ismail
Team Members:
Aernie Othman
Aiza Farina Ainan Marzuki
Ikhwan Mdtab
KUALA LUMPUR CITY CENTER,
(KLCC) MALAYSIA
1) Petronas Twin Tower
2) Concert Hall
3) Suria KLCC Retail
Complex
4) Maxis Tower
5) Esso Tower
6) Mandarin Oriental Hotel
7) KLCC Park
8) Mosque
A world landmark in Malaysia
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Number of storeys: 88
Height: 1,483 feet above
street level
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Built-up Area: 3.7 million
sq. feet
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Design/Architecture:
Cesar Pelli, in association
with KLCC architects
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Elevators: 29 double-deck
high speed passenger lifts in
each tower
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Owner : KLCC Holdings
Architects :
1) Cesar Pelli & Associates, Inc
2) Adamson Associates Architects
3) RSP Architects Planners & Engineers
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Main Contractor: Hazama Corporation
Planning Manager: Arlida Ariff
Project Managers:
1) Hashimah Hashim (Tower 1)
2) M.Hilme Hassan (Tower 2)
COST

Total Costs of towers : $ 1.6 billions

Planning cost : 5 -7 % total costs

Everyday costs: $ 0.8 millions

Each floor construction costs: $ 2.6 M
TIME

March 93 - Excavation work for the foundation began.
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March 94 - Construction began for Tower One.
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April 94 - Construction began for Tower Two.
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7 Aug 95 - The lifting of the skybridge started.
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10 Aug 95 - The skybridge was finally in place.
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13 Feb 96 – Pinnacles Construction began.
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5 Mar 96 – Pinnacle installation completed for Tower 2
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11 Mar 96 - Pinnacle installation completed for Tower 1

June 96 - Cladding was completed.
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April 96 - Declared as the world's tallest building.
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31 Aug 99 - Official opening by Prime Minister.
SCOPE
Goal: To be a challenge of the
century and to make Malaysia be
recognized worldwide
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Foundation
Tower building
Annex
Cladding
Pinnacle
FOUNDATION
•Buildings anchored in 55 m of soil for tower basement
•Friction piles reinforced by grout
•Excavated using combined technique of piling and raft
foundation
•Bored hole was cleaned and keep intact using water
•Concrete was poured to eliminate joints and to get
smooth finish
TOWER BUILDING
- Two separate construction teams -> competition
- First to use GPS (Global Positioning Satellite)
- Built by concrete instead of conventional steel
- 1000 people worked on each tower (3 shifts)
- Floors up to 73rd  Identical & easiest
- 4 days to built each floor (Normal – 10 days)
TOWER 1
• Led by Japan  Hazama Corporation
• Started on March 1994 (25 months & 1 week)
TOWER 2
• Led by Korea  Samsung Engineering Co.
• Started on April 1994 (24 months)
ANNEX
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Annex construction began
after level 19 (the smaller
part attached to the main
tower or a bustle)
Build later due to
difference in weight with
the main tower
Precision ~ 0.001 mm
10 levels below was
checked with every floor
completed to make sure
how straight the building
was
CLADDING

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Began as the building
reached level 9
Materials used- stainless
steel extrusion & laminated
glass
33000 panels- designed as
a curtain wall exterior
Features of the curtain give
appearance of a flowing
silver ribbon around the
building
Constructed using 4-day
cycle system
PINNACLE
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73.5 m high (steel) - The
world’s tallest building
Tower 1 - building the
pinnacle from both ends,
the pinnacle meet
halfway
Tower 2 - assembled the
pinnacle piece by piece
until it was completed
Constructed
simultaneously, Tower
Two completed the
pinnacle six days earlier
CHALLENGES
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Original site plan soil not
suitable for foundation –
irregularities of the Limestone
Bedrock
Leaning tower – based on
rumors
Original design was 16 m short
than Sears Tower – add
pinnacles
Completed within the budgeted
cost and time scheduled
References
1) http://www.klcc.com.my/Showcase/PTT/ps_ptt_overview.htm
2) http://www.greatbuildings.com/buildings/Petronas_Towers.html
3) http://www.emporis.com/en/wm/cx/?id=100172
4) http://www.skyscraperpicture.com/kualalumpur.htm
5) http://www.structurae.net/structures/data/index.cfm?ID=s0000053