1. Presented to you by
Structural Engineer
Mohamed Galal Mohamed Nour El Din
2014
QATAR FACULTY OF ISLAMIC STUDIES
QFIS and structural challenges
VIP Lounge

2. Introduction :‐
‐I would like to extend my thanks first to Allah who gave me the chance to work
in this project and second to our management who believed in me.
‐This presentation will cover two items carried internally in QFIS project.
A‐VIP Lounge Curved wall supporting system.
B‐Ablution Walkway and VIP Lounge bulkhead and drywall.

3. A. VIP Lounge Curved wall supporting
system.

4. VIP Lounge Curved wall supporting system.
VIP Lounge Curved Wall
Zigzag Panels (No Support
from this side is allowed)

5. VIP Lounge Curved WallZigzag Panels (No Support
from this side is allowed)
VIP Lounge Curved wall supporting system.

6. VIP Lounge Glass Wall
VIP Lounge Curved wall supporting system.

7. VIP Lounge Supporting system occurred at fourth (East side of Mosque)
14.5m
VIP Lounge Curved wall supporting system.

8. VIP Lounge Curved wall supporting system.

9. 1.There were no design in the IFC drawings for this item.
2. The VIP Lounge surface is part of conical shape (each curved column has
different elliptic shape) and some of the curved columns are not reaching to
the RC slab due to Architectural shape of the wall / RC slab limits.
3. Area is very congested with MEP. Ducts at the top of the curved columns.
4. The consultant added some requirements when we sent the first design
with fixed top and bottom connections to reduce the forces acting on the
main steel and the fourth floor RC slab.
(their requirements was to make the top connection vertically slotted to allow
for the vertical movement of the main steel & make the bottom connection
pinned)By following the instructions of the consultant we suffered from very
big reactions and the number of bolts and size of base plate increased
severely. We introduced some releases to overcome this problem.
5. The Secondary steel shouldn’t be visible from both sides of the curved wall
so our system must fit inside the 210 mm wall cavity left by the Arch designer
VIP Lounge Curved wall supporting system.

10. The VIP Lounge external surface is part of conical shape
VIP Lounge Curved wall supporting system.

11. Area congested with MEP. ducts

12. VIP Lounge Curved wall supporting system.

13. As advised by Arup (designer) the top
connections shouldn’t transfer any vertical
loads to the main steel and should allow for
rotation so we have made a vertical slot near
from the main steel top flange to avoid the
reducing the lateral torsional buckling capacity
of the main beams
Bottom connection were
designed as pinned
connection to reduce
stresses on the RC slab

14. VIP Lounge Curved wall supporting system.

22. B. Ablution Walkway and VIP Lounge bulkhead
and drywall.

23. Ablution Walkway and VIP Lounge bulkhead
and drywall.
Walkway occurs at top of ablution staircase.

24. Ablution Walkway and VIP Lounge bulkhead
and drywall.
Walkway occurs at top of ablution staircase.

25. Ablution Walkway and VIP Lounge bulkhead
and drywall.

26. Ablution Walkway and VIP Lounge bulkhead
and drywall.

27. 1.There is no design in the IFC drawings for this item as this item added as change
order recently and the client requested us to provide the structural/Architectural
proposal and drawings.
2. The Ablution walkway occurs above the mosque ablution staircase and its
function is to carry out maintenance of ablution cascade wall water feeder
“Gutter” so we have a very small distance nearly 600 mm between the Gutter
and the MEP. Ducts to place our structure.
3. Area is very congested with MEP. Ducts/sec steel.
4. We have to support the bulkhead and the glass wall closing the VIP Lounge
from the ablution staircase side (how to avoid transfer any movement from main
steel to the glass wall).
5.After we did the pre‐design and by site visit we discovered that the MEP.
Ducts were not matching the BIM model 100% so we made As‐built report for the
ducts to see the influence on our system.
Ablution walkway and VIP Lounge bulkhead
and drywall.

28. VIP Lounge Bulkhead &
Below this bulkhead there is
a glass wall below it by
another subcontractor.
Below this beam we will
install a U‐Track only to
provide lateral stability for
the glass wall and allow for
vertical movement to take
place without touching the
glass.

29. This duct was not in its place as per BIM
Model and as per survey report we have
done before start design
Bulkhead & Glass wall
beneath walkway must be
supported
Very congested Area
As shown.

30. Due to existence of MEP. duct as per As‐built report which we carried out
after doing the pre‐design to insure that our study is matching the site
conditions .we have to cut the walkway as shown
We made bridging between main steel members at some locations to
support the walkway structural system
15m
16m

31. The Ablution walkway occurs above the mosque
ablution staircase and its function to carry out
maintenance of ablution cascade wall water
feeder “Gutter”.
Gutter

35. Result :

36. This photo was taken from the ablution
stair case showing the scaffolding used to
install the ablution gutter and the
ablution walkway.

37. Ablution Gutter.

38. Ablution Gutter.

39. Tools used
1.The good utilization of our internal BIM system helped us so much to
accomplish this work. I would like to extend my thanks also to Mr. Ibrahim
Taha who was very helpful during design stage of these items.
2.Getting the 3D Model from BIM.
3.Draw all items using Auto CAD and decide the members distribution and
locations .
4.Sending the members drawn in 3D environment using Auto CAD to BIM
for coordination with other disciplines in the BIM model.
5. Once we are sure there is no clashes. I start design of steel members
(main framing) using SAP2000
Tools and Techniques used to solve these items

40. Tools used
6. After completing the SAP Model I have to choose type of supports and
run the analysis and get the results (Joints deflections , Joints reactions
….ect)
7. Design of connection Using HILTI PROFIS if it is attached to concrete and
manually if it is attached to steel.
8.Finally we rebuild our steel model again using TEKLA to send it to our
subcontractors / steel fabricators to extract fabrication drawings.
Tools and Techniques used to solve these items

41. Tools used
9. Prepare the design drawings/GA/Assembly/ connection
details and insure that we are placing coordinates of the
members ends to avoid any wrong orientation on site later.
Tools and Techniques used to solve these items

42. Tools and Techniques used to solve these items
Techniques
1.First technique to be used “we can do it”
Train your subconscious that you can do it & you can solve the
problem.

43. Tools and Techniques used to solve these items
Techniques
2. Use Deming Cycle

44. Tools and Techniques used to solve these items
Techniques
3. Using to do list technique in order to priorities your work
and don’t not get lost.

45. Tools and Techniques used to solve these items
Techniques

46. Last but not least
I would like to thank our project director
Mr. Mahdi Salem for his support and trust.