The tower is composed of three elements arranged around a central core. The height of the multi-use skyscraper has "comfortably" exceed the previous record holder, the 509 meter (1671 ft) tall Taipei 101. The spire of Burj Khalifa is composed of more than 4,000 tons of structural steel. The five (5) sets of outriggers, distributed up the building, tie all the vertical load carrying elements together, further ensuring uniform gravity stresses: hence, reducing differential creep movements. Photo of the Completed Burj Khalifa The structure of Burj Khalifa was designed to behave like a giant column with cross sectional shape that is a reflection of the building massing and profile. The spire was constructed from inside the building and jacked to its full height of over 200 metres (700 feet) using a hydraulic pump. The Burj Khalifa is designed to be the centerpiece of the large scale Phase 3: 6 Boreholes (two with pressure meter testing) with depths up to 60m. heights periodically. Each wing, with its own high-performance concrete core and perimeter columns, buttresses the others via a six-sided central core, or hexagonal hub. Fig. Rising 828 meters over the desert metropolis of Dubai, the Burj Khalifa tower is the world's tallest structure. In order to rise to the great heights, a proper structural support is necessary. The tower does not contain any structural transfers. The setbacks are organized with the Tower's grid, such that the building stepping is accomplished by aligning columns above with walls below to provide a smooth load path. Figure 1. This enabled construction to proceed without the normal delays associated with column transfers. High performance concrete with high compressive strength Due to its tubular system, proportionally only half the amount of steel was used in the construction, compared to the Empire State Building. The context of the Burj Dubai being located in the city of Dubai, UAE, drove the inspiration for the building form to incorporate cultural, historical, and organic influences particular to the region. The Tower pile load test supported over 6,000 tonnes (Figure 12). Burj Khalifa uses the bundled tube design of the Willis Tower, invented by Fazlur Rahman Khan. At the top, the central core emerges and transitions to a special steel framed structure which is sculpted to form a finished spire. 2 STRUCTURAL SYSTEM BRIEF DESCRIPTION 2.1 General The Burj Khalifa project is a multi-use development tower with a total floor area of 460,000 square meters that includes residential, hotel, commercial, office, entertainment, shopping, leisure, and parking facilities. Rising 828 meters over the desert metropolis of Dubai, the Burj Khalifa tower is the world's tallest structure. The whole system is constructed by using high performance concrete wall. Seismic loading typically did not govern the design of the reinforced concrete Tower structure. General The Burj Khalifa project is a multi-use development tower with a total floor area of 460,000 square meters that includes residential, hotel, commercial, office, entertain-ment, shopping, leisure, and parking facilities. The center hexagonal reinforced concrete core walls provide the torsional resistance of the structure similar to a closed tube or axle. The site geotechnical investigation consisted of the following Phases: A detailed 3D foundation settlement analysis was carried out (by Hyder Consulting Ltd., UK) based on the results of the geotechnical investigation and the pile load test results. Market: Commercial + Office, Hospitality, Mixed Use, Residential, National Geographic Features Burj Khalifa and William Baker in Engineering Marvels Series, The Man Behind the Wonders – Bill Baker Reveals the Secrets of Structural Engineering, William F. Baker in The Engineers on BBC World Service, Structural Engineers Association of Illinois, American Society of Civil Engineers (ASCE) – Architectural Engineering Institute (AEI), Award of Merit: World Voices Sculpture, Burj Khalifa Lobby, GCC Technical Building Project of the Year, International Association for Bridge and Structural Engineering, Excellence in Structural Engineering: Most Innovative Structure, International Projects Category: Outstanding Project, National Council of Structural Engineers Association, Special Recognition for Technological Advancement, 875 North Michigan Avenue – Structural Engineering, Willis Tower (formerly Sears Tower) – Structural Engineering, Poly Real Estate Headquarters – Structural Engineering, Poly Corporation Headquarters – Structural Engineering. Search this site. The construction began on 6 January 2004 and ended in the year 2010. Burj Khalifa structural health monitoring Strainstall completed a monitoring contract on the tallest man-made structure ever built - the Burj Khalifa Tower in Dubai. To be precise, burj khalifa has no damping system like a tuned mass damper or so. This design helps to reduce the wind forces on the tower as well as keep the structure simple and constructability. The raft was constructed in four (4) separate pours (three wings and the center core). The architecture features a triple-lobed footprint, an abstraction of the Hymenocallis flower. heights periodically. The structural integrity of the building itself is the damping system. Burj Khalifa uses the bundled tube design of the Willis Tower, invented by Fazlur Rahman Khan. Designers purposely shaped the structural concrete Burj Dubai - "Y" shaped in plan - to reduce the wind forces on the tower, as well as to keep the structure simple and foster constructibility. 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