Nonbuilding and Special Structures
Qatar was chosen to host the prestigious FIFA World Cup 2022, which had instilled Qatar to act swiftly in delivering FIFA compliant stadiums and training fields. One of such stadium planned for FIFA 2022 was Al Gharafa Stadium. Though this stadium isn’t entirely new, but doubling the capacity of an existing stadium and covering it partially for air conditioning is unprecedented. The stadium had to be built ground up with new planning to accommodate double the spectator capacity, larger pitch, and challenging was to air-condition the stadium to 73 deg F when the outside natural temperature would be upto 130 deg F. To achieve this cooling solution, large roof structural system was conceptualised with span unto 25m cantilever supported over tension piles and combinations of foundation system.
Structural system for such large span and with existing constraints to retain the existing stadium elements posted challenges in the way design had to be thought about. The design was driven to be more practical with onsite design, validation and testing. The steel roof was design as geodesic double layer roof with large triangular span to support self and score boards, lights etc. The foundation had to be studied with probably mix of different foundation systems as suitable as the ground condition with existing structure. The tension piles proposed to counteract the high tension due to large cantilever roof.
The presentation of this stadium as case study highlighting the bespoke engineering methodology and practice could be insightful for the aspiring and practicing structural engineers. The use of BIM in achieving near to zero clash in virtual simulation reinforced the engineering detailing adopted in the structural design and construction. The structural model had to accommodate various services to be within its space to minimize dedicated spaces for each.
From this presentation the audience will have an opportunity to gather unconventional and bespoke engineering principles that can be adopted within the sound engineering framework. The presentation will also throw light on the practical design challenges that could be faced in a stadium construction or larger structural roof construction. The practical design including foundation, superstructure steel, coordination with various engineering discipline and custom design for complex detailing.
The presentation would also be an opportunity for engineers to have preview of engineering practices in middle east in compliance with American codes of practice and design. Codes used are ASCE, ACI, AISI etc..
Having inspired by Structures Congress 2018 at FortWorth which I attended first time, decided to bring structural engineering practices in Qatar and middle east through this presentation in Structures Congress 2019. Looking forward for this opportunity.