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Skyscraper shapes and wind forcesFeatured science projectScience project video

Conclusion

The hypothesis that a circular cross-section shaped skyscraper will be able to withstand the greatest force of wind is proven to be correct.

Apart from wind factor, another limitation in building skyscrapers is in meeting elevator requirements. Taller buildings have more people working or living in them and therefore more space needs to be allocated for elevators on the ground floor. To overcome this problem, double- decked elevators and sky lobbies are used as intermediary points to improve efficiency of the elevator system.
 

Also consider

The experiment can also be done by constructing model buildings with denser material such as wood.

It would also be interesting to ascertain if the type of surface or paintwork on a building will affect its resistance to wind forces. For example, would a building with an exterior consisting mainly of glass or metal be more resistant to wind, than one consisting of masonry?
 

References

How skyscrapers work - http://science.howstuffworks.com/skyscraper4.htm

How tall can skyscrapers be? - http://www.wisegeek.com/how-tall-can-skyscrapers-be.htm
 

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Complexity level:
7
Project cost ($):
90
Time required:
1 day to prepare, 1 day for observation
Material availability:
Fairly easily found
Safety concerns:

Basic safety requirements. Ensure that you handle the fan with care  to avoid accidents.