A Frameless Geodesic Dome (2013)

183 点作者 karim超过 7 年前

26 条评论

Animats超过 7 年前

In order to shed rain and be fastened to each other, the plastic sheets overlap each other as shingles on a roof would.OK, that's good; a reasonable approach to leaks.It’s all held together with bolts that bolt through all the layers. The shell of the dome is about 2 1/2 inches thick.That's not so good. Many potential leak points. Stress concentration at the bolt holes. The plastic may tear. Nothing holding the edges together with a tight seal. Almost all the problems with geodesic domes are at the joints. The author is vague about how the joints work.Buckminster Fuller's concept for geodesic domes was that they were to be made from factory-built components and modern materials. They were to be products of the industrial age. In a factory, parts could be made to tight tolerances and be weathertight. With modern durable materials such as aluminum and Fiberglas, the domes could have long lives. During the 1950s, many such domes were built for radar stations. There are large radomes in the Canadian north abandoned decades ago, but still standing.Then came the era of hippie domes, which were built by hand from "natural materials". This did not end well. The author of Domebook I and II has repudiated his work, after a long history of failed structures. Trying to shingle a sphere does not work well. Nor does trying to fit a standard window into a dome. Nothing quite fits, and there are too many bad seams. All this gave geodesic domes a bad name.The domes in this article look like the ones from Dome Village in LA, but less rugged. [1] That was an attempt to house homeless people. The Fiberglas domes of Dome Village held up fine for 13 years; the project failed for other reasons.[1] <a href="https://en.wikipedia.org/wiki/Dome_Village" rel="nofollow">https://en.wikipedia.org/wiki/Dome_Village</a>

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roel_v超过 7 年前

This is cool to play with and all, but what rubs me the wrong way about posts like this is the delusional 'look I made something that is applicable as anything but a novelty! I'm solving major societal problems here!'. This thing doesn't have windows, it requires replacing panels on the outer shell every few years, you can't build up not even 1 level and has virtually no sound insulation so horrible in term of land use, doesn't have walls solid enough to put plumbing in let alone fix anything else to, doesn't meet any building regulation in terms of safety - not even if you take regulations from 30 years ago, ...I understand the draw and see the romanticism of living like a hermit in a forest; really I do. But for some reason people delude themselves into thinking that this can scale. When you're saying 'I love nature so much, I'm going to go live right in the middle of it!', it's like saying 'I love my horse so much, I'm going to eat it tonight'. Which is fine - I eat horse meat. But don't claim you're 'loving' it in the same way normal people use the word 'love'.

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donquichotte超过 7 年前

The article mentions yurts and then goes on saying "at the same time the frameless dome provides a living area that is protected by a solid insulated waterproof shell. This is absent in these other lightweight structures."I beg to differ! Yurts as used in Mongolia and Kyrgyzstan often have several layers, at least one of them being water-proof. The innermost layer is often wool, which offers excellent insulation and can be dried quickly when it gets wet from prespiration, offering some sort of climate control. Mongolians experience ultra harsh continental climate, going from -40°C in winter to +40°C in the summer, and they have used yurts for centuries.Source: stayed in yurts in Mongolia, Kazakhstan and Kyrgyzstan for a total of several weeks on a motorcycle tour, went to a yurt market to check out the building materials in Ulaan Baatar.

chromagnon超过 7 年前

The structure seems to be relying on bolts, plastic sheeting and foam for all of its strength. Even bolts are not usually considered structural elements, since the sheer strength of bolts is negligible - much less plastic or foam.The whole idea of geodesic domes is that the trianglular sides distribute load more efficiently. In this case, there's nothing that could be described as load bearing. It's a semi-rigid tent that will disintegrate in a strong breeze.

Tepix超过 7 年前

If you're having problems finding a suitable frame for your geodesic dome, consider bamboo. There's a guide prepared by Buckminster Fuller himself at <a href="http://www.desertdomes.com/bamboo.html" rel="nofollow">http://www.desertdomes.com/bamboo.html</a> and Mitra Ardron made a variant with continuous poles at <a href="http://www.mitra.biz/joomla/blog/2815-instructions-for-making-a-bamboo-geodesic-dome" rel="nofollow">http://www.mitra.biz/joomla/blog/2815-instructions-for-makin...</a> (are there metric versions?)

bfu超过 7 年前

I have few questions:<pre><code> - Is it livable in temperate zone (-20°C in winter)? - Is that single sheet plastic window? How does it insulate in winter? - Is it dark inside? - Can plants survive inside? - Building codes usually have minimal volume for bedrooms, does it meet those standards/recommendations? - What's 2x4? - What's blueboard? - Post some closeup pictures of doors, windows, top and base from the outside - How do doors open? - Why the working table have so massive bottom? Is it just "art"? Seems like it's unnecessarily heavy. - Wouldn't mass-produced triangles be simpler/cheaper? </code></pre> Also I just noticed article is from September 2013!Also previous HN discussion: <a href="https://news.ycombinator.com/item?id=6355488" rel="nofollow">https://news.ycombinator.com/item?id=6355488</a>

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King-Aaron超过 7 年前

Note: Do not use an open flame or heat source inside an enclosed space made from polyurethane/plastic/nylonSee: Agonising death

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sushimako超过 7 年前

Show HN: Years ago, some friends and I designed & built a dome/hexayurt hybrid[0] for Burning Man. The walls are made of insulation sheets and the hinges are taped with 6" bi-directional filament tape (many here will know Hexayurts[1], I'm sure). Additionally it has connection-edges which feature a system of fabric-strips and 2" velcro to connect edges reliably. In total it consists of 3 separate, foldable pieces that can be set up in ~20 minutes by 2 people, even in windy situations. It has 2 "windows", the pointy things on the sides. The door is a bit small and definitely requires some flexibility getting in and out :) It survived the harsh desert conditions of 3 years at Burning Man so far, incl strong winds and rainstorms, only requiring a bit of tlc between each year. The "strap-down-spider" tightens the structure down against winds and keeps it firm enough that you can easily lean against it. To make it fully rain-proof, one needs to tape the floor-tarp up against the walls (visible in the pictures). Apart from the floor-taping the setup and tear-down is entirely zero-waste, due to the velcro system. Hexayurt enthusiast might notice the silver tape that covers the filament-tape seams, which helps protect the tape from deteriorating in the UV light (w/o the silver tape, the filament tape would go brittle after abt 1-2wks of direct sunlight).Here[3] is some very outdated documentation on the first version. We initially tried to connect the walls via bungees - didn't work out at all as you can imagine. The following year we added the velcro system after I found this amazing post [2] on a hexayurt mailing-list, describing someone's experiments with materials. Without that person's efforts and time spent on research I could have never finished this one!Of course there's already a bunch improvements lined up for a v2 - hopefully next year :)[0] <a href="http://imgur.com/a/8K1dR" rel="nofollow">http://imgur.com/a/8K1dR</a>[1] <a href="https://en.wikipedia.org/wiki/Hexayurt" rel="nofollow">https://en.wikipedia.org/wiki/Hexayurt</a>[2] <a href="https://groups.google.com/d/msg/hexayurt/2QRUl3txk-8/v_A0DDcSeCAJ" rel="nofollow">https://groups.google.com/d/msg/hexayurt/2QRUl3txk-8/v_A0DDc...</a>[3] <a href="http://flo.jottit.com/moonberry" rel="nofollow">http://flo.jottit.com/moonberry</a>

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davedx超过 7 年前

From what I gather, it's made from plastic, foam and wood, and uses electrical heating. I didn't see any mention of fire risks, which is something people have brought up before with these structures. I hope there's at least a fire extinguisher in there.

yborg超过 7 年前

As an exercise in low-cost structure construction this is interesting, but this is not a practical home. It apparently lacks any kind of sanitary facilities or kitchen. As noted in the blog itself, it's comparable to a tent in terms of applications.

tjic超过 7 年前

> The geodesic dome is brilliant in how it minimizes the amount of materials needed to enclose a given space.Except sheet material is sold in rectangles, so you end up with a huge pile of offcuts.As a child I was entranced by geodesic domes in the late 1970s (part of the hangover of the utopian back-to-the-land movement), and I read up on them extensively over the following decades.I've also done a bit of construction.Domes are wildly impractical for almost every purpose.Yes, the hold more volume per surface area. That's great for a liquified natural gas tank. It's not so good for humans who live on flat surfaces.They are very hard to plumb and wire.They generate tons of waste.They are hard to maintain.Roofs and walls have different purposes (structural support vs shedding preciptation) and different materials are best for each.The list goes on.I could write a 500 page book on why domes are almost always the wrong answer, but the shortest proof I have is: if they were so great, they would have caught on.

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athenot超过 7 年前

A large-scale 2 dimension version of this was built for Terminal 2E and 2F at the Paris CDG airport. It yields the same feeling of airiness and I'm always happy to transit though that one.<a href="https://www.flickr.com/search/?q=cdg%20terminal%202e" rel="nofollow">https://www.flickr.com/search/?q=cdg%20terminal%202e</a>Note that this design requires impeccable material strength characteristics. Otherwise it will collapse, as 2E did in 2004:<a href="https://failures.wikispaces.com/Terminal+2E+at+Charles+de+Gaulle+Airport" rel="nofollow">https://failures.wikispaces.com/Terminal+2E+at+Charles+de+Ga...</a>

rebuilder超过 7 年前

I'm left wondering about moisture. Ventilation seems pretty minimal and, inside the walls, nonexistent, so how long until this has mold all over it?

goelakash超过 7 年前

I did not understand how it is completely waterproof. What if there is rough weather? And how does it prevent water from entering in case there is standing water around the base?

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novaleaf超过 7 年前

one problem i've run into when making a shed is the flooring. unless you spend a huge amount of time+effort+materials on a foundation, water vapor tends to come up. This causes mold growth and eventually over the span of 5 to 10 years the floor will rot out of under you. (I'm in the Pacific Northwest)Does anyone have recommendations on a cheap moisture tolerant flooring? I am thinking of using Marine-Grade plywood as a subfloor on my current project.

surething超过 7 年前

This reminds me of Dome of Visions, which has now come out in 3 iterations.<a href="http://domeofvisions.com" rel="nofollow">http://domeofvisions.com</a>

resurge超过 7 年前

This is Bruce Hauman's dome (creator of the Clojure library Figwheel)I watched a video of the talk where this dome is mentioned last week.<a href="https://www.youtube.com/watch?v=j-kj2qwJa_E&t=9m16s" rel="nofollow">https://www.youtube.com/watch?v=j-kj2qwJa_E&t=9m16s</a>I was hoping there'd be some more info about the way he lives in general. Seeing from the outside picture he also seems to grow his own food.

lozf超过 7 年前

Hexayurts[0] > Domes0: <a href="http://hexayurt.com" rel="nofollow">http://hexayurt.com</a>(sorry, I don't have time for a more detailed post just now).

prawn超过 7 年前

Would you save much on materials by removing the lowest tier of sheets? You'd lose standing room near the walls. Would you lose strength?

DonHopkins超过 7 年前

Didn't Halliburton make a line of urban survival domes to go with their bubble suits and management leisure suits?<a href="https://www.youtube.com/watch?v=JzSMjSxM5Vo" rel="nofollow">https://www.youtube.com/watch?v=JzSMjSxM5Vo</a><a href="https://www.youtube.com/watch?v=k_dg6V8pQGo" rel="nofollow">https://www.youtube.com/watch?v=k_dg6V8pQGo</a>

manmal超过 7 年前

Great idea and execution. I did not find any mentions of a toilet in there, did I overlook something? How is this going to work?

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Applejinx超过 7 年前

You could spray this with layers of gunnite and build up a sealed concrete bubble. I think it'd be just as stable as an inflated form. Once you had an 'eggshell' layer of concrete, that would bear the weight of successive layers. Might require taping over the edges of the 'shingles'.

somberi超过 7 年前

A similar idea, but edible. <a href="http://www.marthastewart.com/913141/sugar-cage-jacques-torres" rel="nofollow">http://www.marthastewart.com/913141/sugar-cage-jacques-torre...</a>There was another with Jacques Pepin, that I am unable to find, where explains the concept better.

stcredzero超过 7 年前

This puts me to mind of a Bill Burr quote, about the real desire for guys to spend $250k on a house.

0xbear超过 7 年前

Tax appraisal: cost of structure $2100, cost of land $100k. Tax bill: half the cost of structure per year plus school levies.

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jlebrech超过 7 年前

could you lay the shape out flat first then pull it all in.i would have 3d printed (or laser cut) something first.