Geodesic Dome Angles: Help for Math Wizards!

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  • Thread starter Thread starter kauaibeachbum
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SUMMARY

The discussion focuses on constructing a 13-foot diameter geodesic dome greenhouse using a 2V configuration, which consists of six pentagonal frames and internal struts. The pentagon sides measure 4.017 feet (48 3/16 inches), while the internal struts are 3.552 feet (42 5/8 inches). A 20-degree angle is formed from the center of each pentagon side to the center of the pentagon, with the frames mitered at a 20-degree bevel. The user seeks specific cutting instructions for the internal struts that radiate from the pentagon points.

PREREQUISITES
  • Understanding of geodesic dome structures, specifically the 2V configuration.
  • Familiarity with angle measurement and cutting techniques for woodworking.
  • Knowledge of pentagonal frame construction and geometry.
  • Experience with using geodesic dome calculators for design specifications.
NEXT STEPS
  • Research cutting techniques for internal struts in geodesic dome construction.
  • Learn how to use geodesic dome calculators effectively for accurate measurements.
  • Explore advanced geometry concepts related to pentagonal and triangular shapes.
  • Investigate software programs that assist in calculating angles for woodworking projects.
USEFUL FOR

This discussion is beneficial for DIY builders, architects, and engineers interested in constructing geodesic domes, as well as hobbyists looking to enhance their woodworking skills with precise angle cutting techniques.

kauaibeachbum
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Hi,
Any math wizards here willing to assist me in determining cut angles for parts to construct geodesic dome greenhouse. I am building a 13' diameter geodesic dome. I am using the info from geodesic dome calculators on line for a 2V version. It is composed of 6 pentagonal frames with internal struts that radiate to the 5 points on the pentagonal frames.Five pentagons create the walls and the 6th one is the roof. Triangle voids remain between the pentagons. I have cut the pentagon frame parts but need construction details on cutting the internal struts. The pentagon sides are 4.017' (48 3/16") and the internal struts are 3.552' (42 5/8"). A line from the center of each pentagon side to the center of pentagon creates a 20 degree angle. The 9/16 x 2 15/16 pentagon frames are mitered with a 20 degree bevel. I need cutting instructions for the internal struts that radiate from the points...any help would be appreciated.
 
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kauaibeachbum said:
Hi,
Any math wizards here willing to assist me in determining cut angles for parts to construct geodesic dome greenhouse. I am building a 13' diameter geodesic dome. I am using the info from geodesic dome calculators on line for a 2V version. It is composed of 6 pentagonal frames with internal struts that radiate to the 5 points on the pentagonal frames.Five pentagons create the walls and the 6th one is the roof. Triangle voids remain between the pentagons. I have cut the pentagon frame parts but need construction details on cutting the internal struts. The pentagon sides are 4.017' (48 3/16") and the internal struts are 3.552' (42 5/8"). A line from the center of each pentagon side to the center of pentagon creates a 20 degree angle. The 9/16 x 2 15/16 pentagon frames are mitered with a 20 degree bevel. I need cutting instructions for the internal struts that radiate from the points...any help would be appreciated.
Is this a 2v form of icosahedron?

I have a program that will allow figuring the angles.

Email krazykyngekorny(@)gmail.com
 

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