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137,500 elephants 🐘 were used for the construction of Burj Khalifa

Updated: 2 days ago

  • 137,500 elephants, each weighing an average 6000kg corresponds to 330,000 of concrete used for the Burj Khalifa 🐘


  • Also, 55,000 tonnes of steel rebar, as well as aluminium, glass, stainless steel and silicone, was used.


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Concrete Test Cubes
Burj Khalifa Skyscraper

Engineering 🏗


Materials ♺ used for Burj Khalifa’s construction:


  • Concrete:🧱 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:⛓ 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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