Rectification of Building Tilt (Skyscrapers)

Rectification of Building Tilt (Skyscrapers)

(Millenium Tower SanFrancisco)

Harshit Srivastava1, Anukaran Kamboj2

1Department of Civil Engineering, Amity University Gr.Noida Campus

2 Department of Civil Engineering, Amity University Gr.Noida Campus

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Abstract - Till July 2017, the Millennium Tower settled approximately 17 inches vertically since its Construction phase was 2005-2009. The megastructure had 58 floors, erected upto 645ft (197M) tall. The settlement didn’t occur uniformly, causing a distortion and tilting of the mat foundation, along with a lean (out-of-plumbness) of the building.

This evaluation report takes into account how the tower's severe settling has affected how safe its structural and foundation systems are from powerful earthquake-related vibrations. Its findings are supported by an examination of the building's design documentation, survey data, and the outcomes of sophisticated computer modeling performed by engineering firm Simpson Gumpertz and Heger (SGH) to predict the building's reaction to powerful earthquake ground motions.

With views of the sierra, the cascades, and Farallon Island, it is the tallest and most expensive residential tower in San Francisco. The most expensive unit sold there in 2013 was for $13.5 million.

The total cost of construction back then was $600 Million, which has current market value of $800 Million.

Key Words:  Rectification, Skyscraper, Tilt, Foundation.