*Created 6 January 1998* --- document under constuction ---

# 5 Frequency 3/4 Sphere

**
The image above is a Mathematica generated model for a 5 frequency icosahedral sphere structure I built
last fall in Southern Oregon. The real dome has a 32' base diameter and rises to a height of 21' at its
apex. It was constructed in three days from 575 pieces of pre-formed 3/4" EMT. It took me another three
days to form the tubing.
**
I hope to have pictures of the construction
here soon.

# Chord Diagram

The chord length factors given on the above diagram are appropriate for a sphere of unit radius. The following
elements are required for a 3/4 sphere.
*
Quantity Length*
50 0.198
90 0.226
95 0.232
115 0.245
90 0.247
90 0.255
45 0.262