137,500 elephants, each weighing an average 6000kg corresponds to 330,000 of concrete used for the Burj Khalifa š
Also, 55,000 tonnes of steel rebar, as well as aluminium, glass, stainless steel and silicone, was used.
Engineering š
Materials āŗ used for Burj Khalifaās construction:
Concrete:š§± High strength concrete varying from C50-C80 concrete strength was used. A huge pile supported raft, 3.7m thick utilised 12,500 cubic meters of 50 MPa cubic strength concrete that incorporated 40% fly ash and W/C ratio of 0.34 in its mix.
Furthermore, C60 concrete was used for the foundation piles. Due to the highly corrosive groundwaters of the dessert, cathodic coding protection was required for the piles.
Each floor consists of 200mm to 300mm two-way reinforced concrete flat plate slabs spanning in modules of 9m. From level 156 and above a steel braced frame structure is placed.
Steel:ā steel brace frame structure was used for the construction of level 156 and above with a purpose of reducing the structures overall weight.
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