The Singapore Sports Hub project includes a 55,000-seat National Stadium with a retractable roof 300 meters in diameter, an indoor aquatic center, water sports center, multifunction arena, exhibition center, and sports museum. As a civil engineer, the author's graduation thesis involved designing and testing the stadium bowl's cooling system. The author was then involved in site management for one quarter of the stadium, which included subcontractor management, design amendments, and overseeing various structural elements like bored piles, ring beams, truss blocks, and slabs.

1. Vaimiti RIGAL 1/2 January 2015
SINGAPORE SPORTS HUB PROJECT
(Singapore)
Architect: DP Architects
Designer: ARUP
Main contractor: Dragages Singapore
(member of Bouygues Construction Group)
1) The project
Set to become the pre-eminent sports and leisure venue in the South Asia region, the
Singapore Sports Hub offers world-class facilities for sports, events, concerts, exhibitions and
international trade shows.
Dragages Singapore undertook design and construction work for the complex. Central to the
Sports Hub is the 55,000-seat new National Stadium, which features a retractable roof measuring
300 m in diameter.
Other Hub facilities includes: a 6,000-seat indoor aquatic centre and a water sports centre for
the general public; a 3,000-seat multifunction arena that will be fully scalable; an exhibition centre; a
sports museum; office space for sporting associations; 41,000 m² of commercial space.
2) What I was involved in
As a graduate civil engineer, my graduation thesis was the stadium bowl’s cooling system
design and testing.
Final design of the bowl cooling system in the bleachers
Then, I was involved in site management for one quarter of stadium. This included:
- Planning and management of site activities:
o Sewage and drainage subcontractor tendering,
o Interviews,
o Award and contract follow up;
o Subcontractors claims and litigations

2. Vaimiti RIGAL 2/2 January 2015
- Design amendments submissions with the consulting team;
o Due to miss conformance of site works,
o To coordinate the latest amendments requested by other services, such as MEP et
architectural request,
o To accommodate other contract conditions;
- Particularly in charge of the structural supports of the roof, which included:
o 2m diameter bored piles,
o Disconnected slab at ground level to enable services to pass on a circular road,
o 2m to 2.20m diameter columns, ~12m high;
o A 1km long post-tensioned “ring beam”, 12m square section (post tensioning
subcontracted to VSL Singapore)
o Truss blocks reinforcing and casting
o Handover to the roof team at the junction of steel plate/concrete of truss blocks.
- Other structural works follow up:
o Precast slabs,
o Cast-in-situ slabs, beams and columns.
The ring beam with 50% completion of truss blocks.
Last pour of the ring beam (6m wide)