Geodesic/Zome "Pod"

[TaffGoch]

British "Pod" construction: 

-Taff

[RC]

Nice looking zome!  Sheet metal with bent tabs.  I like it.

[Ashok Mathur]

Sent from my iPhone

On 22-Feb-2023, at 7:04 AM, RC <clark.rob...@gmail.com> wrote:

Nice looking zome!  Sheet metal with bent tabs.  I like it.

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[Dx G]

Nice looking work.  However, it might be stronger, and even more interesting visually, if they used creased diamond panels instead of flat faces.

DxG

[RC]

Actually, if you look closely, the panels do have a crease.  Also, there are narrow flanges at the top of each diamond that bend outward and two flanges at the bottom that bend inward.  There is a lot of built in rigidity to the sheet metal panels.

[Dx G]

Nice work RC, I totally missed that. I appreciate your well documented illustrations.  However, it looks to me (correct me if I am wrong) like those creases occur at the location of routine panel edges/chords.  What the creased diamond dome panels do, is entirely remove the common base strut where two triangles meet, and replace it with a long "valley" crease that runs from apex to apex.   This is detailed, to a limited extent, in one of Fuller's patents, and is seen in a lot of famous domes.  In some cases, this adds stiffness and strength to domes that might otherwise need a frame for stiffening.  What Fuller illustrated is how one can make a 2-layer creased panel, making materials like paper/cardboard extremely rigid and strong.  I've made some paper models, continue to be impressed with that approach, and also suspect they would be more impact resistant (think wind born objects in hurricanes and tornadoes) than a plain shell.   Sure, in time I may find some things I don't like about them, but that hasn't happened yet.  Originally I was concerned about material waste, given all the angles of the flat raw stock needed, but have since discovered how to bang these things out with zero to negligible waste.  I won't go on and on about it here, but you get the idea...

DxG

[Adrian Rossiter]

Hi Taff

On Tue, 21 Feb 2023, TaffGoch wrote:
> *British "Pod" construction
> <https://www.housebeautiful.com/uk/renovate/homes-makeovers/a42990813/garden-pod-dzome-george-clarke-amazing-spaces/>:

I wondered about the kites. I think the base model is fairly close
to a spherical projection of the dual of a polar zonohedron, and then
has a a window cap added.

zono -P 16 | off_trans -C | pol_recip | off_util -S | antiview -t no_tri

I watch the show quite often!

Adrian.
--
Adrian Rossiter
adr...@antiprism.com
http://antiprism.com/adrian

[TaffGoch]

Adrian,

Looks spot-on to me.

I'm not so interested in the geometry, as I am about the parts-fabrication and construction methodology.

Could provide someone an inspiration for geodesic dome building.

-Taff