Case Study: Sabic Assembly Point Organic Shade
In January 2020, CAS Engineers finalized the structural and MEP calculations of the Sabic Technology Center Assembly Point Organic Shade. This commercial project took place in Riyadh, Saudi Arabia, and consisted of an organic shade design composed of hollow steel section mainframes on precast pad foundations. The walls and roof are aluminum composite panels.
The assembly point shade structure is a property development of SABIC, ranked among the world’s largest petrochemical manufacturer. SABIC is a public company based in Riyadh, Saudi Arabia. Today, the company has operation in over 50 countries with a global workforce over 33,000 talented individuals.
The shade structure has an approximately 440 square meter footprint with and built with steel frames which are them cladded with aluminum panels. This structure will be bolted on precast concrete foundations below ground level.
Our Scope of Work
For the Sabic Assembly Point Organic Shade, the client requested CAS Engineers to provide a complete structural package which includes, but not limited to, structural analysis and design calculations for all steel frames, steel connections, and foundations. Also, to provide a complete structural plan such as foundation plan, footing details showing reinforcements, framing plans, framing elevations, and steel connection details. The shop drawings also known as the fabrication drawings of all the steel frames were also part of our scope of wok including material takeoff.
The structural steel frames used as the final design sections are 300x300x10mm, 300x150x8mm, and 250x100x8mm, all interconnected using bolted connections. The steel columns are then anchored down on to the precast concrete footings via steel baseplates.
Our Design Methodology
We modeled every steel frame using a finite element capable software to capture the actual performance of each of the steel frames when subjected to loadings such as dead load or the structure’s weight itself, the wind pressure, and combination thereof. The structure was subjected to a 160kph wind speed applied on the two orthogonal directions.
We performed the analysis and design of the Sabic Assembly Point Organic Shade using the finite element analysis (FEA) method using the proposed section. The initial specified design sections are satisfactory, and this has been used as the final design section. However, upon checking with the local market, it turned out that some section sizes were not locally available so we had to revise our design and update the steel section sizes according to what was readily available in the market.
The foundation has been designed using the soil parameters issued by the geotechnical engineering service provider and that we presumed that the top of footing would be the top of finished floor level. However, upon further site inspection, it turned out that there are several existing service pipelines beneath the pavement and so we had to lower the current elevation of the footings and introduced concrete pedestals to accommodate any existing service pipeline across without damaging them.
In order to guarantee satisfaction, CAS Engineers met with the client locally to go over the project details. The client said, “It was a pleasure to work with CAS Engineers, hope we will work on more projects. I really appreciate the work and coordination.”
CAS Engineers was very flexible in terms of the structural design of this project. Our teams were flexible to change to the utmost satisfaction of the client as well as meeting the safety requirements of the structure itself, and the safety of the general public. The final design was code compliant, materials was specified according to locally available products, and foundations that allows the existing pipelines to remain undisturbed and functional.