2. PREFACE:
This Internship report comprises of all the technical and
theoretical details of the works that are being carried out at
Bahria Icon tower. The use of modern machineries,
equipment’s and techniques was something not seen before in
Pakistan. Specially, working under the supervision of highly
trained professionals was also a very good experience. The
engineers, supervisors and foreman’s helped me a lot in gaining
knowledge both at site and in office. Though I have tried my
best to keep the report free from errors, I apologize if any error
is found which was not deliberately made. If the report can
help any person in providing information, I will feel that the
purpose of the report has been fulfilled. Please feel free to
contact me if any question arises.

3. ACKNOWLEDGEMENT:
The internship opportunity I had with Habib Rafiq Ltd Pvt. was a
great chance for learning and professional development.
Therefore, I consider myself as a very lucky individual as I was
provided with an opportunity to be a part of it. I am also
grateful for having a chance to meet so many wonderful people
and professionals who led me though this internship period.
I express my deepest thanks to Engr. Waqas Ahmed, Engr.
Adnan Hussain Siyal and Engr. Rana Arsalan Ashraf for guiding
me throughout my internship & giving necessary advices and
guidance and arranged all facilities to make life easier. I choose
this moment to acknowledge their contribution gratefully.
I perceive as this opportunity as a big milestone in my career
development. I will strive to use gained skills and knowledge in
the best possible way, and I will continue to work on their
improvement, in order to attain desired career objectives. Hope
to continue cooperation with all of you in the future.
Sincerely,
Name: Abdullah Jawaid
Place: Bahria ICON Tower, Karachi.
Date: 11/07/2016

4. PROJECT DESCRIPTION:
The Bahria Icon Tower is planned to be Pakistan’s tallest and
South Asia’s second tallest building with a height of 286m from
the ground level of one of its towers. Bahria Icon tower is one
of the biggest projects of Bahria Town, covering an area of 3
acres. The project consists of 3 massive towers among which 2
are main towers. The Construction site is divided into 4 main
segments, including 3 towers along with their basements and
fourth segment is the simple basement project. All the towers
are of different heights, one would have around 10-14 stories
which is planned for parking facility and emporium with various
other facilities. The second is luxurious hotel tower having 40
stories which includes 93 king rooms, 92 standard double
rooms, 12 junior suits and 1 Executive room and not to forget
50 state of the art luxurious apartments as well. The third and
the tallest one would have a tremendous height of 286m on
completion, this one would be a 62-storey tower divided into
two parts one is corporate area consists of fully serviced state
of the art offices, meeting/conference rooms and data centers
and the other one is for retail purposes which includes world
class shopping malls, Cineplex cinemas, food courts etc. All
these towers are planned with 7 basements beneath the
structure which in itself an achievement as its not practiced in
Pakistan before. The fourth part of the project would only be of
7 basement stories along roadside whose ground floor would
be utilized for reception area of Bahria icon tower. The parking

5. facility would be able to accommodate around 2300 cars and
2200 bikes. The project would not only be able to generate its
own electricity but it would also supply to local power system.
The Introduction of Cogen (Co-generation) plants will fulfill the
power demand of the project and the heat liberated during the
process will be supplied to HVAC system of the project. The
Project has its own efficient foolproof security and firefighting
systems with international standard building management and
maintenance unit.
PROJECT DETAILS:
 Project Name: ICON Tower
 Owner: Bahria Town
 Client: Galaxy Pvt. Ltd.
 Architect: Arshad Shahid Abdullah (ASA Pvt. Ltd)
 Structural design: WSB Pvt. Ltd.
 Leading contractor: Habib Rafiq Limited (Pvt.)
 Project Management: AAA Pvt. Ltd.
STRUCTURAL DETAILS:
NOMINAL REINFORCEMENT COVER
ELEMENT COVER (mm)
BEAMS 40
SLABS 25
COLUMNS 40
WALLS 25

6. Steel Details:
Rolled shapes BS5950 S355
Built-up plates, bars, members ASTM A572 GRADE 50
Steel pipes ASTM A53 TYPE S
Steel tubes ASTM A500 GRADE B
Fy= 46 (Rectangular), Fy= 42 (Circular).
Threaded Rod Anchor Bolts ASTM F1554 GR 55
STRUCTURAL CONCRETE SCHEDULE
LOCATION STRENGTH CLASS
UNDERSIDE OF RAFT C20
FOUNDATION RAFT C42
SHEAR WALLS, LINK BEAMS C64, C48
RETAINING WALLS C32
FLAT PLATE SLAB C32
COLUMN C64, C32
BEAMS C32
Piles:
The foundation of the project is around 100-120 ft. deep.
Comprising of 7 basement floors. Two types of piles are used in
the foundation of the project i.e. working piles and secant piles
working piles comprises of two types of piles I.e. end bearing

7. and skin friction piles all having an average length of about
25m. Secant piling is done around the peripheries (Boundary
wall) of the structure to resist lateral soil pressure. They are
around 600 piles inserted into the basement of the structure.
The procedure of constructing secant piles is similar to that of
interlocking piles and generally involves the use of CFA
(continuous flight auger) equipment. It’s also cost effective as
compared to diaphragm wall construction.
Pile diameters ranges from 450mm to 900mm and are generally
installed at piles centers of between 500mm and 1000mm
respectively. Therefore, leaving the gaps between the piles
from 15 to 100mm. The cylindrical compressive crushing
strength of all piles at 28 days is (f’c=48N/mm^2).

8. Water Proofing:
Due to high water table in Clifton area after de-watering, water
proofing techniques are applied to protect the foundation of
the project in future from possible water leakage. SIKA
WATERSPOTS and SIKA INJECTOFLEX HOSES are provided at all
construction joints. The hoses are injected once when the de-
watering is turned off. They also have the capacity to be
grouted multiple times during the life of the structure if leaks
would occur. “SIKA CRETE” a cementitious is applied on and
around the pile head which incorporates cast in sika water bar
on the water surface.
Slabs:
CDS System (Composite Deck Slab):
Composite Deck slab consists of a single steel mesh, connected
and welded through shear connectors and a composite deck
sheet.
These composite slabs are installed throughout the tower
except on 24,25,35,36 and 47th
floors. These slabs rests on steel
girders and are 130mm thick. CDS is very light in weight too.

9. Steel Girders:
CDS system rests on steel girders which are of different sizes
and varies accordingly with slab length. Depth of steel girders
are 2ft and 1.5 ft. These Girders are installed to support the
composite deck slab and are installed at every floor throughout
the tower except 24,25,35,36,47th
floors. Steel girders are
connected with core wall’s slab and attached to periphery
beams. These are installed in such a way that an embedded
steel plate is fixed into periphery beams and core wall’s slab on
both ends of the steel girder. After that the girder is fixed with
the steel plate with the help of “Nelson Studs”(AS SHOWN).

10. (Typical Steel Girder plan)
Columns:
Steel and concrete details used in these columns are already
mentioned, all the columns were spiral having varying
diameters along the floors.
Floors Diameters (mm)
25-30 1450
30-36 1350
36-48 1100
48-61 800

11. (Columns at periphery beams (Column Formworks).
Before casting of concrete).
( Aluminum Coupler’s used to join steel bars ( Typical Steel reinforcement)
To reduce steel consumption in overlapping) (Dia of bar 40mm, 16mm helical stirrups)

12. Core walls/ shear walls:
The project includes a core wall which starts from basement 7
up-till 62nd
floor. As we all know core walls are constructed to
provide lateral resistance to wind pressure, earthquakes jolt
and also to provide stability to the structure on the whole. They
are reinforced with tremendous amounts of high quality steel.
Here at BTI, core walls include lifts and staircase as well. The
wall thickness reduces with the floors as we go up.
(Inside of core walls) (Outside of core wall)

13. Outrigger Beams and reinforcement:
Outrigger system is provided in high rise building or structures
to control the horizontal sway of building due to wind pressure
or seismic waves. These systems are installed at BTI on floors
24,25,35 and 36th.
BMU (Building management and maintenance
unit):
BTI tower is equipped with state of the art BMU system which
is essentially provided to clean and maintain high quality glass
panels at the exterior of the tower, the glass provided is
designed to withstand wind pressures and also to reduce
external heat from the atmosphere thus reducing the power
consumption of the building. BMU tracks are constructed on
47th
and 62nd
floors.

14. (BMU TRACK ON 47th
FLOOR)
Periphery Beams:
As the name indicates, “periphery beams” are provided at the
boundaries/periphery of the tower. They are 800mm thick and
having a width of 1200mm, they are divided into 4 types/parts
namely B1, B2, B3 and B4. All these beams have different
structural reinforcement scheduling (bar sizes, no of bars etc.)

15. (Triple Stirrups used in Periphery beams)
Equipment/Machineries Used at BTI:
MEVA Formwork:
MEVA Formwork is a formwork system that is exclusively used
at BTI for the first time in Pakistan. In short, MEVA Formwork is
a formwork used to cast core walls and bank walls inside it
within no time. It’s both cost and time effective and efficient. It
jumps hydraulically to the next floor after the casting of
concrete. Its productivity is amazing.

16. CRANES:
At BTI two types of cranes are used, one is the level-luffing
crane and the other one is simple tower crane. Both have
different working radiuses and loading capacities. Though
luffing crane can hold much more load as compared to the
ordinary tower crane.
(Luffing crane) (Tower Crane)

17. Formworks:
Table Formwork:
Table formwork was also a very unique formwork that I have
witnessed at BTI, it was used to cast slabs at the peripheries
along the periphery beams. Once casted, the formwork is
shifted to next floor with the help of crane, without dismantling
the whole formworks thus reducing time and increasing
productivity of the construction.
Column Formwork:
Witnessed steel formworks which are smooth and reduces the
casting time.

18. Conclusion:
Internship at Habib Rafiq Ltd. is actually a milestone for me in
my career growth. I have learned a lot of new things here
especially at site, witnessed and experienced works at high rise
buildings was actually something new for me. Made new
friends. The teachers were friendly and were professionally
sound too. The teaching methodology of the engineers was
very good as they teach us from the beginning. Starting from
engineering basics, drawings to advance structural detailing
and works at site. Now I can surely say that I am capable of
reading engineering drawings, sections, structural drawings and
also “Bar bending schedule”. Thanks a lot everyone for helping
me out.