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**Geo (earth) Desic (divided)**

The Geodesic Dome Geo (earth) Desic (divided)

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**Geodesic Domes are energy and material efficient**

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**Geodesic Domes can span large interior areas**

Notice that there are NO interior support columns

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**Discovered by Buckminster Fuller**

‘Bucky’ Fuller in front of Casa Manana Theater in Fort Worth Texas

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Complicated Math? The geodesic dome ratio took two years to calculate without a computer.

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Simple Directions! Find an existing Geodesic ratio and create triangles.

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Use any material Warning! Food will melt!

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**Which ratio do I use? To build a 2V Dome with a radius of 30cm**

Radius = 30 cm Which ratio do I use? To build a 2V Dome with a radius of 30cm 35 Struts cm each 30 Struts 16.4 cm each To build a 3V 5/8 Dome with a radius of 30 cm 30 Struts cm each 55 Struts cm each 80 Struts cm each To build a 4V Dome with a radius of 30 cm requires: 30 Struts 7.6 cm each 30 Struts 8.86 cm each 60 Struts 8.84 cm each 70 Struts 9.39 cm each 30 Struts 9.75 cm each 30 Struts 8.96 cm each

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**Kit homes are not a new Idea**

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**‘Square’ houses have natural fatal flaws**

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**Domes can range from very small…**

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To very big

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**The dome at Epcot has been through MANY storms.**

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**More triangles mean more strength and stability**

These two designs are filed with the United States Patent office.

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**Geodesics are more common than you might think.**

South pole research station Pop-up tent Dopplar weather radar Football (yes, this is called a football)

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**Your Turn! Research, design and build a Geodesic Dome.**

You may use any dimensions and any type of material for construction. You must turn in the dome and a data sheet showing which dome ratio you used along with all math steps. Also show the predicted and the actual dimensions of your dome.

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Foundations of Technology, Third Edition/ Technology, Engineering, and Design © 2011 International Technology and Engineering Educators Association STEM.

Foundations of Technology, Third Edition/ Technology, Engineering, and Design © 2011 International Technology and Engineering Educators Association STEM.

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