Eiffel Tower Femur



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Analogies: Eiffel Tower & the Femur

Eiffel Tower

Femur







I) Background/ Basic Mechanisms:

c:\users\jacoblck\desktop\analogy pictures\eiffel tower 2.0.jpg

Figure : Eiffel Tower Structure

- Eiffel tower is a 1,063 feet (324 m)

-It was designed by Gustave to optimize the amount of iron to provide maximum strength.

-It was designed to withstand tension and compression forces induced onto the tower by the environment (such as wind forces)




I) Background/ Basic Mechanisms:

http://www.answersingenesis.org/assets/images/articles/am/v4/n4/femur.jpg

Figure : Femoral Head of the Femur

-Femur is the thigh bone

- It is the strongest and longest part of the human skeletal system.

-It supports most of the varying forces transmitted onto the hip, which sometimes can be more than 6 time one’s body weight.

- It consists of a femoral head, which is an off-centered ball that fits into the hip socket.

- In the femur, especially the head, there are many trabeculae (bone fibers).

-These bone fibers are crisscrossed in layers in a specific order to take compression and tension.








II) Similarities

-Both are intricate designs that are able to support maximal amounts of forces using little amounts of materials.

-Both have structures and support systems according to its varying load: (Struts and braces in the Eiffel Tower; Trabeculae in the femur)

- Materials in the structures, both, crisscrossed and have different layers.



http://image.shutterstock.com/display_pic_with_logo/7381/7381,1224510925,14/stock-photo-eiffel-tower-pattern-part-of-eiffel-tower-in-paris-france-19190455.jpgtrabeculae-1

Figure : Struts and Bases of the Eiffel Figure 4: Trabeculae in the Femur

- In figure 5, the Femoral head can be seen as a bunch of inverted Eiffel Towers lined up around its cortical bone. Hence, we can see that the mechanical properties are similar.



http://www.ce.jhu.edu/perspectives/studies/eiffel%20tower%20files/et_internal%20forces_files/image018.jpglines of trabeculae in the head of the femur

Figure 5:Comparison between the Femoral head and the Eiffel Tower

III) Possible Design Concepts

-The Designed concepts from these analogies are…

(Conservation of materials, and the Strength of Structures)

-Below are trabeculae inspired building design examples:



trabeculae-5

Figure 6: The meshwork in the trabeculae towers is able to support buildings while providing an adequate amount of space ratio.

trabeculae-2

Figure 6: Trabeculae tower




Analogical Reasoning:

Premise#1

The Eiffel tower was built using struts and braces to withstand the tension and compression caused by the environment (ex. Wind forces).



Premise#2

The femur can support a great amount of tension and compression forces by its trabeculae.

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Conclusion

Since the femur and the Eiffel tower are capable of withstanding great amounts of compression and tension, struts and braces are like the trabeculae; hence, the structure of the Eiffel Tower and the Femur are analogous.



Main Websites:

  • http://www.discoveryofdesign.com/id13.html

  • http://www.answersingenesis.org/articles/am/v4/n4/architects



Corresponding Websites:

  • http://www.gla.ac.uk/ibls/US/fab/tutorial/generic/bone2.html

  • http://education.yahoo.com/reference/gray/subjects/subject/59

  • http://www.scia-online.com/eNews/en/eNewsOkt05_EN.html

Design Concept Ideas:

  • http://www.evolo.us/architecture/trabeculae-re-imagining-the-office-building/


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