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Burj Khalifa - Design & construction technologies

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Introduction, Records, Design concept, Construction technologies, Constructions details, Stages of construction, Comparision with other skyscrapers and Conclusion.

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Burj Khalifa - Design & construction technologies

  1. 1. BURJ KHALIFA
  2. 2. CONTENTS  GENERAL INFORMATION  COST AND OWNERSHIP DETAILS  DESIGN  TECHNOLOGY USED IN CONSTRUCTION  CONSTRUCTION DETAILS  STAGES OF CONSTRUCTION  COMPARISION  CONCLUSION
  3. 3. GENERAL INFORMATION  BURJ KHALIFA SITUAED IN DUBAI , UNITED ARAB EMIRATES IS ABOUT 828 M TALL AND 829.8 M INCLUDING THE ANTENNA.  ITS BEEN THE TALLEST STRUCTURE IN THE WORLD SINCE 2008.  IT WAS CALLED “BURJ DUBAI” FOR BEING THE TALLEST BUILDING IN THE UNITED ARAB EMIRATES ,  LATER NAMED “BURJ KHALIFA” ON THE 3RD ANNIVERSARY IN 2011.  LOCATED AT 1 SHEIKH MOHAMMED BIN RASHID BOULEVARD, DUBAI, UNITED ARAB EMIRATES.  BUILDING IS NAMED AFTER SHEIKH BIN ZAYED AL NAHYAN THE PRESIDENT OF THE UNITED ARAB EMIRATES AND THE RULER OF THE NEIGHBOURING EMIRATE OF ABU DHABI
  4. 4. THE BURJ KHALIFA HAS SET MANY RECORDS  TALLEST EXISTING STRUCTURE : 829.8 M  TALLEST STRUCTURE EVER BUILT:829.8 M  TALLEST FREE STANDING STRUCTURE: 829.8 M  BUILDING WITH MOST FLOORS: 163  BUILDING WITH WORLDS HIGHEST OCCUPIED FLOOR.  WORLDS HIGHEST ELEVATOR INSTALLED.  WORLDS LONGEST TRAVEL ELEVATOR : 504M  WORLDS TALLEST STRUCTURES THAT INCLUDES RESIDENTIAL SPACE.
  5. 5. COST AND OWNERSHIP  THE DISCLOSED COST OF THE ENTIRE PROJECT IS 1.5 BILLION USD.  DESIGNED BY AR. ADRIAN SMITH AT SOM(SKIDMORE , OWINGS & MERRILL)  DEVELOPER : EMAAR PROPERTIES  STRUCTURAL ENGINEER : BILL BAKER AT SOM  OWNED BY EMAAR PROPERTIES.
  6. 6. DESIGN  The main structure of the building is based on "organic inspiration", taken from the HYMENOCALLIS flower.  Like petals from a stem, the tower's wings extend from its central core.  No stranger to Middle Eastern design, architect Adrian Smith incorporated patterns from traditional Islamic architecture.  But his most inspiring muse was a regional desert flower, the Hymenocallis, whose harmonious structure is one of the organizing principles of the tower's design.
  7. 7. TECHNOLOGIES USED IN CONSTRUCTION  GEOTECHNICAL TECHNOLOGY  CONCRETE PUMPING TECHNOLOGY  WALL AND FLOOR TECHNOLOGY  FORMWORK TECHNOLOGY  EXTERNAL WALL TECHNOLOGY  FIRE PROTECTION TECHNOLOGY  WIND ENGINEERING TECHNOLOGY
  8. 8. GEOTECHNICAL TECHNOLOGY  Before the building could be constructed, two years of ground work had to be laid, including 6 months of geotechnical investigation and testing, and a year and a half of excavation and foundation construction.  There were many challenges faced by the geotechnical team in the construction of the tower.  These included the unique architectural design of the building footprint itself, the generally weak soil of the construction site and the overall size of the structure, creating massive loads on the foundation.  Burj Khalifa uses a deep foundation design, consisting of both a 3.7 meter thick raft foundation and 192 bored piles.
  9. 9. GEOTECHNICAL TECHNOLOGY  The purpose of this design is to allow the weight of the building to be spread over a larger volume of soil, decreasing the load in any given portion.  Bored piles are piles cast into drilled holes in the ground on site.  This allowed the engineers of the project to both create variable length piles depending on the loads the pile is expected to bear, and to disturb the already weak soil much less than a traditional driving of piles would.
  10. 10. GEOTECHNICAL TECHNOLOGY  The purpose of this design is to allow the weight of the building to be spread over a larger volume of soil, decreasing the load in any given portion.  Bored piles are piles cast into drilled holes in the ground on site.  This allowed the engineers of the project to both create variable length piles depending on the loads the pile is expected to bear, and to disturb the already weak soil much less than a traditional driving of piles would.
  11. 11. CONCRETE PUMPING TECHNOLOGY  A machinery record was set in pumping concrete to a new height – though not exactly to the often-quoted measurement.  In late 2007 a string of high pressure concrete pumps needed to splutter the mixture up to 601 meters. The maker of the pumps held a photocall, and used a massive poster to announce the figure us a new world record. World Record Pumping Height 606m
  12. 12. CONCRETE PUMPING TECHNOLOGY  Over a period of about 32 months, the high pressure pump and two others delivered more than 165,000 cu.meters of high-strength concrete which is about 66 Olympic sized swimming pools.  Throughout the entire project, only high compressive strength concrete mixtures were used and pours were only done at night because of hot temperatures during the day.
  13. 13. WALL AND FLOOR TECHNOLOGY  The structural system can be described as a buttressed’ core.  Each wing, with its own high performance concrete corridor walls and perimeter columns, buttresses the others via a six-sided central core, or hexagonal hub
  14. 14. FORMWORK TECHNOLOGY  SKE formwork system is used for raising: - large-area formwork elements - jointly with the climbing scaffold - in one single step - and without any cranage by one casting section at a time.
  15. 15. EXTERNAL WALL TECHNOLOGY  Special two-paned windows were designed for use in the Burj Khalifa.  The outside face reflects daily solar heat.  It is coated with a thin layer of metal, which deflects ultra-violet radiation.  First pane is useless again infrared radiation. So, the inner pane is coated with a thin layer of silver, which keeps the infrared rays out.
  16. 16. EXTERNAL WALL TECHNOLOGY
  17. 17. FIRE PROTECTION TECHNOLOGY
  18. 18. FIRE SAFETY TECHNOLOGY  Fire alarms, sprinkler systems, stairwell pressurization and smoke evacuation systems are the primary fire safety systems at the Burj Khalifa building.  These are all tied in with the aforementioned home automation system featuring smart multi-alarm smoke, heat and optical sensors found in all rooms throughout the building.  The Burj is also equipped with 38 fire and smoke resistant evacuation lifts.  As an added safety precaution in the event of a fire, sandstorm or earthquake, a highly trained team of emergency specialists will remain onsite at the Burj building 24 hours a day, seven days a week.
  19. 19. WIND TECHNOLOGY  For Burj Khalifa wind forces and the resulting motions in the upper levels become dominant factors in the structural design.
  20. 20. WIND TECHNOLOGY  The Burj Khalifa is specially designed to conquer the wind, a goal that becomes more and more important as altitude increases.  The building rises to the heavens in several separate stalks, which top out unevenly around the central spire.  This somewhat odd-looking design deflects the wind around the structure and prevents it from forming organized whirlpools of air current, or vortices, that would rock the tower from side to side and could even damage the building.  Even with this strategic design, the 206-story Burj Khalifa still sways slowly back and forth by about 2 meters at the very top.
  21. 21. CONSTRUCTION DETAILS
  22. 22. CONSTRUCTION STAGES 2006-02-01 2006-08-29
  23. 23. CONSTRUCTION STAGES 2006-11-11 2007-01-02
  24. 24. CONSTRUCTION STAGES 2007-08-09 2007-08-03
  25. 25. COMPARISION
  26. 26. COMPARISION
  27. 27. CONCLUSION This tower is the most modern to date, take all the parameters of the previous tour but innovating, and is destined to become the symbol of the city in the world. The lifts reach 10 m / s or 36km / h and were designed by Otis. The same materials are used, the steel used for this tower represents the equivalent of 5 Airbus A380.These materials allowed to conquer the heavens, with the stone a tower of 800m would have been unimaginable and financially unachievable. The glass is great for passing light. The 142 000m² of glass are not made of conventional glass but glass with a coating to reflect the sun's rays The air conditioning system uses 1 million liters of water a day to refresh the 320 000km² of surfaces. This skyscraper cost 1.5 billion dollars. With their money from oil, the Dubai authorities were able to finance this skyscraper what the countries of the northern hemisphere can not pay today. The same crane was used and the rate was 1 storey every 3 days. It is destined to become the new symbol of this city as the Petronas Towers in Kuala Lumpur in Malaysia or the Empire State Building in New York.
  28. 28. THANK YOU

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