prolate elliptical dome

79 views
Skip to first unread message

Blair Wolfram

unread,
Nov 4, 2011, 8:35:45 PM11/4/11
to geodesichelp
Does sketchup allow you to pull a high frequency dome into an elliptical prolate dome? Bucky called this an ovaloid. I could make someone's day if I could show what a 16v to scale 1000' x 200' x 160' high prolate elliptical sphere looks like.
 
Blair

TaffGoch

unread,
Nov 5, 2011, 12:19:25 AM11/5/11
to geodes...@googlegroups.com
Blair,

Dimensions sound odd. Did you mean 100' x 200' x 160' ?

Here's 1,000' x 200' x 160'

-Taff
Blair ovaloid.png

TaffGoch

unread,
Nov 5, 2011, 12:43:19 AM11/5/11
to geodes...@googlegroups.com
3-way (top, front, end)
Blair ovaloid 3-way.png

Blair Wolfram

unread,
Nov 5, 2011, 12:43:22 AM11/5/11
to geodes...@googlegroups.com
Taff;
Beautiful. Those are the correct dimensions. It's 160' tall and has a flat base. Can you rotate it for an elevation view from the side?
Thank you,
Blair

--
You received this message because you are subscribed to the "Geodesic Help" Google Group
--
To unsubscribe from this group, send email to GeodesicHelp...@googlegroups.com
--
To post to this group, send email to geodes...@googlegroups.com
--
For more options, visit http://groups.google.com/group/geodesichelp?hl=en

TaffGoch

unread,
Nov 5, 2011, 12:51:25 AM11/5/11
to geodes...@googlegroups.com
Dome....
Blair ovaloid 3-way dome.png

Blair Wolfram

unread,
Nov 5, 2011, 12:55:24 AM11/5/11
to geodes...@googlegroups.com
Taff, this is truly amazing. Thank you.

On Fri, Nov 4, 2011 at 11:51 PM, TaffGoch <taff...@gmail.com> wrote:
Dome....

TaffGoch

unread,
Nov 5, 2011, 1:00:44 AM11/5/11
to geodes...@googlegroups.com
Blair,

I assume that the vertical dimension of the entire ovaloid is 160'. 

The "dome" depiction is 80' high.

-Taff

Blair Wolfram

unread,
Nov 5, 2011, 1:03:16 AM11/5/11
to geodes...@googlegroups.com
He would like the dome height 160'.

--

TaffGoch

unread,
Nov 5, 2011, 1:14:08 AM11/5/11
to geodes...@googlegroups.com
Revised....
Blair ovaloid; 3-way (revised).png

TaffGoch

unread,
Nov 5, 2011, 1:20:19 AM11/5/11
to geodes...@googlegroups.com
Well, that's not right (only 500' long),...

...here it is, 1000' long.
Blair ovaloid; 3-way (revised).png

TaffGoch

unread,
Nov 5, 2011, 4:37:06 PM11/5/11
to Geodesic Help Group
I can only imagine what such a dome is proposed to enclose....

...a battleship?

Blair Wolfram

unread,
Nov 5, 2011, 7:51:11 PM11/5/11
to geodes...@googlegroups.com
Manufacturing and building this would be about the greatest nightmare. An ellipse has a minimum number of strut length duplications to start, reduced further by prolate.Combine this with a need for thickness in the shell resulting with an inner dome having the same number of strut variations again. Then, thousands of diagonal cross members following the compound curves connecting the inner and outer ellipsoids need to be solved.
 
CSU Cleveland State University had an indoor track covered with a octahedron based geodesic, which was split down the middle, separated and connected by a barrel vault. This wasn't a 1000' but with the repetition in frame parts, spherical based ovals would be many times easier to manufacture and build than elliptical .
 
The   

On Sat, Nov 5, 2011 at 3:37 PM, TaffGoch <taff...@gmail.com> wrote:
I can only imagine what such a dome is proposed to enclose....

...a battleship?
Reply all
Reply to author
Forward
0 new messages