Burj Khalifa Project - Engineering marvel

Engineering marvels of Burj Khalifa

1. The Burj Khalifa Project Sam Aaric 10/12/2022

2. Overview of project, scope and value Project Overview : The Burj Khalifa project was undertaken as part of Emaar’s initiative to provide high-quality luxury multi-use living space, in response to a demand for high-end accommodations in addition to office space and other amenities, targeting domestic and internationals investors and tourists. Scope: The project scope included an observation deck, a fine dining restaurant, a four-story fitness club, 37 office floors, 160 guest rooms and suites, 144 private residences, an 11-hectare park, 6 water features, four pools, a 3000-car garage. Value: Connect Burj Khalifa investors to downtown Dubai, which offer more amenities and value beyond the investments in the Burj Khalifa.

3. Major risks of the project Building risks The Building’s Lateral load Gravitational Load Foundations for the building 2. Environmental risks Desert Storm, a usual occurrence in the gulf region. Wind-storms Fire hazards Heat and Lightning strikes

4. Risk register with probability and impact scores and relative risks priorities Risks Probability Rating Likelihood Risk probability Description and Nature Lateral Load Moderate 1 Lateral loads such as wind load, earthquake, earth pressure against basement wall are possible to occur and have occurred to similar projects in the past Gravitational Load High 2 Human occupancy, building material heavy loads are given to stress and test the gravitational capabilities of the construction Building Foundation Very High 3 Highly visible threat could exist due to soil conditions, overwatering, landscaping which should not come at surprise at their occurrence during the construction Building Risks Environmental Risks Risks Probability Rating Likelihood Risk probability Description and Nature Desert Storm High 4 Desert sandstorms are common in the emirate throughout the sprint and especially summer Windstorm High 4 The aftermath of sandstorms during summer and in turbulent weather, resulting in rising temperatures can cause strong wind-storms. Fire Hazard Moderate 3 Smoking, flammable and combustible materials generally are known risks in any constructions site Heat and Lightning Strikes Low 2 Though not frequent, UAE does experience bright lightning strikes due to heavy rains which may impact the construction of a high magnitude, esp. that of Burj Khalifa caliber.

5. Risk impact and responses 1. Solution to Building Risks Lateral Load – create to operate under piles are that limited to certain meters A three-winged structure anchored to a strong hexagonal central core 2. Solution to Environment al Risk Desert and windstorm tunnel testing following Y Structure of the building Multi-alarm sensors that include smoke, heat and optical sensors around construction sites Lightning and Heat protection systems is used to safely mitigate the strikes Impact Rating Likelihood Impact to Cost Impact to Schedule Impact to Scope Lateral Load Moderate Moderate, or 10-15% increase Moderate or 1-month delay Sizeable increase Gravitational Load High Significant, approx. 25-50% increase Significant or may lead to multiple months of delay Considerable increase Building Foundation Very High Massive, 50% or above increase Massive, may extend beyond 6 months of delay Massive increase Desert Storm High Significant, approx. 25-50% increase Significant or may lead to multiple months of delay esp. during summer Considerable increase Windstorm High Significant, approx. 15-40% increase May lead to multiple months of delay depending on damages or weather forecast Considerable increase Fire Hazard Moderate Moderate, or 10-15% increase Moderate or 1-month delay Sizeable increase Heat and Lightning Strikes Low Negligible, or 0 – 5% increase Negligible or 1 week onwards delay Slight increase

6. Cost and schedule impact from Risks Risks Impact to Cost Impact to Schedule Lateral Load Increase of 15% - 108.9 million added cost 1-month delay Gravitational Load Increase of 20% - 145.2 million added cost 4 months of delay Building Foundation Added 25% increase – 181.5 million added cost 6 months of delay Desert Storm Increase of 10% - 72.6 million added cost 4 multiple months of delay Windstorm Increase of 5% - 36.3 added cost 6 months of delay Fire Hazard Increase of 10% - 72.6 million added cost 1-month delay Heat and Lightning Strikes Increase of 15% - 108.9 million added cost 1 week delay Projected cost: $876 million Actual Project cost: $1.5 billion Projected Schedule: 4 years Actual Schedule: 5 years 4 months * Risks delay are noted in parallel to each other

7. Bibliography The Burj Khalifa. (2010). The Burj Khalifa. Retrieved June 4, 2010, from The Burj Khalifa: https://www.burjkhalifa.ae/language/en-us/the-tower/fact-figures.aspx Berkheimer-Lubeck, Clariday, Lawley, Mengers, Robalino, 2016 Burj Khalifa, 2018, Statista, 2018  Bianchi, Stefania; Andrew Critchlow (4 January 2010).  "World's Tallest Skyscraper Opens in Dubai" . The Wall Street Journal. Retrieved 4 January 2010.