Tall Building case studies - Tall Buildings: Structural Systems and Aerodynamic Form - page 119

(a)

46.3m

Composite floor slab
(5.1cm deep metal deck
covered with a layer of
reinforced concrete with
a thickness of 11.4cm
in the office floors and 20.3cm
at the mechanical equipment floors)
Reinforced concrete
core shear wall
Inner wall (35cm in thickness)
Outer wall (varying in thickness
75-35cm from bottom to top)

Reinforced
concrete

outrigger

cn
so

Reinforced concrete cantilever
(supported by
1 OOcm-deep-steel trusses)
Reinforced concrete ring beam
(79cm-deep at midspan and
117cm-deep at column faces)
Reinforced concrete perimeter column
(varying in thickness 240-120cm from bottom

Outrigger application

Core
(22.9x22.9m at the bottom,
18.9x22m at the top)

to top)

(B) (c)

(MO&O)

(MO&O)
(MO&O)
(MO&O)

Reinforced concrete Reinforced concrete

perimeter column core shear wall

Reinforced
concrete
ring beam

(MO&O) Reinforced

concrete
outrigger

(MO&O)

(MO&O)
(MO&O)
(MO&O)
(MO&O)

Figure 4.21 The Petronas Twin Towers: (a) plan, (b) structural axonometric, (c) schematic
section