This video explains the clever design solution that engineers employ in the design of high-rise buildings. Usually, high-rise structures resist lateral loads via steel frames, shear cores, or braced steel beams. Sometimes, these systems are not enough and engineers have to resort to other options. The video starts with a generic description of the forces experienced by a skyscraper with the main focus cast on wind loads. Furthermore, the video discusses the aerodynamic features of a building and tricks that reduce the applied wind loads. Lastly, the video explains the use of a tuned mass damper that damps out particular frequencies of the building resulting in a decreased sway of the building.

References:

[1] ACI SP-97, "Analysis and Design of High-Rise Concrete Buildings," USA, 1989.
[2] D. Bennett, Skyscrapers: Form & Function, New York: Simon & Schuster Ltd., 1995.
[3] M. H. Günel and H. E. Ilgin, Tall Buildings Structural Systems and Aerodynamic Form, New York: Taylor & Francis Group, 2014.
[4] H. T. Breukelman, J. Robinson and J. Kottelenberg, "Tuned mass dampers under excessive structural excitation," Motioneer-ing Inc., Guelph, Ontario, 2003.
[5] N. Eddy, "Popular Mechanics," 19 July 2005. [Online]. Available: https://www.popularmechanics.com/tech.... [Accessed February 2022].