The document describes an experiment to test which skyscraper shape withstands high wind velocities most effectively. It tests models of skyscrapers with circular, triangular, and rectangular cross-sections in a wind tunnel at different wind speeds. The results show that the circular skyscraper remained upright at all wind speeds, while the rectangular one collapsed at the lowest speed, supporting the hypothesis that a circular shape is most wind-resistant.

1. Skyscraper Shapes and Wind Forces Neema Smith

7. Steps (1) First I built a wind tunnel… The fan will blow wind through one side, and the model skyscraper will stand on the other end opposite the fan.

8. Steps (2) Then I built each skyscraper… Triangular Rectangular Circular

9. Steps (3) I tested each skyscraper against 3 wind speeds using a fan at one end of the wind tunnel. (SEE VIDEOS)

10. Steps (4) I then recorded all of my results in a table…

11. Results Y = Building remained upright X = Building collapsed Y Y Y Circular X Y Y Triangular --- X Y Rectangular Speed 3: Speed 2: Speed 1: Shape: