Difference between revisions of "Geodesic dome"

Revision as of 23:07, 5 July 2015

Project Geodesic Dome


Status	In progress
Contact	User:Morphje
Last Update	2015-07-05

Morphje is building a geodesic dome. This page houses all related information about this project.

Background

I've always wanted to build a geodesic dome. That's basically it. I positively enjoy the beautiful shape, it's geometrics and sturdiness using only basic materials. The round shape makes it an ideal candidate for high wind sites, since the drag coefficient is very low. For a 9.1 meter dome, the wind load is only 500 KG in a gale force wind (8 bft).

Project goals

At the hackerspace, bigger is better and when doing it's worth overdoing. The only thing i'm overdoing is it's size: 9.1 meter in diameter. All materials are chosen for lightweight, low cost, but still be able to carry my own weight.

Total costs: <400 EUR
Primary material: wood (pine 22x48 mm)
Size: 9.1 meter
Height: 3.7 meter (or 5.4m when extended to 5/9 3v)
Type: 4/9 3v Krushke dome

Costs

Costs so far:

Item	Notes	Cost (EUR)
Wooden struts	Pine; 22x48mm. hornbach, 60 3m60 lengths It's basicly strong enough to hold me, see pictures	101
Metal pipe inserts	12mm CV pipe; galvanized; Installand 4 6m lengths This one was a gamble, but it paid out nicely	29
Metal end cap rings	25x50x1.5 mm rectangular steel, cut into 10mm sections. 6m length This is used to strengthen the wood, so it won't split	33
nuts and bolts	m3; hornbach	50(-ish tbd)
dogtail M6 bolts	m6; tbd dogtail bolts are awesome for assembly	tbd
tarp		70-ish/TBD
Ratchet straps	1500kg	40-ish/TBD
anchors	30x30 square tubing	30-ish/TBD

Calculations

Buildlog

Testing

Final conclusion: It works like a charm, full steam ahead!

Tools created

Metal parts fabrication

Wooden struts assembly

Door

Tarp

Anchors

Tool list

Actual full build

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 {{Project
   |Name=Geodesic Dome
-  |Status=Work in Progress
+  |Status=In progress
   |Contact=User:Morphje
   }}