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Geodesic Dome 3 - The BIG One - Mikes Inventions
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- เผยแพร่เมื่อ 4 พ.ย. 2018
- mikesinventions.etsy.com www.mikesinventions.etsy.com paltap.me/MikesInventions
I show you how my staff and I made a large dome for humans. It's made from 3/4" EMT Conduit, and the long struts use the full length. It's secured with bolts and no special connectors were required. Check it out.
The cost and how fast it is to set up is just great, I have been looking into geodesic domes as a replacement for the tents being used in refugee camps in Syria, there are thousands of refugees living in worthless tents that usually has water leakage or they blow away during wind. This solution with geodesic domes are fast and cheap and most importantly cost efficient.
A friend of the family built a house/dome on a lake in Nova Scotia. It was and still is the most unique looking home inside and out I've seen to date.
Wow! Well made! Now! I can't wait to see what else comes from your channel! Cheers!
I did not know I needed an instructional video for a geo dome today. 😉
Mikes Inventions - I'm curious about geodesic domes and TH-cam recommende your video. At 8:11 the vice grips confused me at first - but I finally understood they are just somewhere to rest the far end of the struts until you get the flange bolted.
I highly recommend rounding off the end of your tubes. The current square edges may rip/tear your frame covering while installing or removing…
I found before crushing the ends drilling one end then placing the drilled end onto a bolt to hold it in place kept the ends co-planer and drilled the other end. . In preparation for the drilling, I drilled five holes through the press plates. On in each of the four corner of the press plates I drilled holes centered on the corner and one inboard from the curved area the correct distance for the hole to be in the proper position on the crushed part of the pipe. I then counter sunk 3/4" holes on the two facing sides of the plates at each corner. I then used springs to in these counter sunk holes to lift the top plate evenly to allow for the uncrushed pipe to be inserted. Using a bolt in the top plate down to through the bottom plate which allowed for the holes in the crushed ends of the conduit to remain aligned. I've lost count on how many of these things I've made for myself and friends.
On a different note I noticed you were putting the heads of the bolts on the INSIDE of the dome not the outside. Heads of the bolts should always be on the outside. Using Carriage Bolts with smooth rounded heads and a hydraulic hole punch one of the struts it makes it easier to pull a cover over the dome without catching the cover on bolt heads.
Ok
Wow Mike you honestly really simplified this a lot better than most videos ive seen of these. And the price to build one of this size in my area is crazy cheap! Im thinking upcoming new green house haha.
Thanks Kyler! Sounds like a cool project. Go for it!
A 24ft diameter x 10ft high 3v could be built from 60x 10ft lengths of emt. There`s enough height in a bottom pent for the door.
Very nice, good job, thank you!
Fantastic!
This might be a to high tech of a solution for a lot of people. But there is a way to reduce the manual labour quite a lot.
Make 3D printed conection bits. Its really only the part in the middle that need to be somewhat solid.
The you could just push the pipes in and if you really don´t want them to move, have a small hole or two and have some self tapping screws going into them
Also... öum... I don't know if this is not obvius? but you could start building the dome from the top, and you would never need to even leave the ground, that would also speed up the build.
Granted, with 3D printed bits, it would probobly take a week to make, but it would use way less manual hours.
Amazing.
I found this very informative as I have always been interested in domes. Just an observation on the method you used to assemble standing on a ladder. Did you consider starting from the top? My thinking is that with help you start from the top centre and then keep going around the bottom lifting it up. That way reduce the risk of falling off a ladder.
Excellent !
Excellent video!!
What length measurements did you use on the tubes? I saw that you used two different lengths
Hey Rafael. My A struts were full length, so 10 feet. Of course I had to leave a bit at each end, because strut lengths are calculated from joint to joint, not end to end, so the A length is not quite 10'. The B struts are a bit shorter, but I don't remember by how much, because I don't remember how much material I left on the ends of the A struts. Whatever length you go with, the B struts are [ 0.883 x A ], and that's joint to joint. Remember to leave a bit on each end of you use a bolted connection. There you go man. Thanks for watching. Good luck!
LOVE IT I TRY THIS THIS YEAR FOR A GREENHOUSE
Great job I just found your channel I would like to build one like this for my yard I really like your explaining but I do have a couple of questions on your layout you said lay 10 of your long ones out for your base then alternate to a's and to b's for your first row what do you do for the next rows what's your layout?do you start over as you do at the base this is got me stumped any advice you can give thanks for sharing and trying to teach us I love the concept thanks
Hey! That sounds really neat. Here's my video on making a paper one. It shows exactly what goes where.
th-cam.com/video/Ym1388CcwuQ/w-d-xo.html&lc=UgwL-EhWI09KR6BkuAR4AaABAg
So the materials here should be light enough could you build from the top down lifting sides up as you add another layer? Eliminating the need for ladders?
Correct. Next Week's video will highlight the device that allows that to happen. Thanks for watching!
In larger 3, 4 and 6 frequency domes lifting from the bottom gets dicey but can be done without much trouble using simple Farm/High lift jacks and webbing straps.
This look amazing! I'm planning on building a 23' 3V dome for an Art installation. Would you suggest 3/4" EMT conduit or 1' would be better?
Hey Serena! If you can afford the weight, cost, and additional muscle required, get the 1". Sounds cool!
@@MikesInventions Great, thank you!
Great build!!
Was any sort of structural analysis done on this project? I’m curious to know the wind/snow load projections of this structure. I’m considering building one but it would need to withstand more than temporary conditions.
You would want a higher frequency dome with much shorter struts, 4' long or less.
This is a good resource I've found: pacificdomes.com/dome-homes/#sizes
Great delivery and very inspiring story.
Thanks!
Great! How strong a press do you need to press these tubes?
Hey! I’m not sure. That was a 20 ton, but a small arbor press would probably work. It’s pretty thin tube.
Can't you assemble it from the center out to avoid assembling it in the air?
Forgive me if this hasn't been answered but why didn't you lay out the struts from the top down lifting each side as you bolt additional struts?
I figured that would be cumbersome and heavy. So a telescopic mast was designed to assist in exactly that. Check that one out. Thanks for watching!
How long the pipe ?
3/4"conduit with a length of 10ft will have too much sideways deflection under load. I would use a higher frequency 3v, 4v or use a larger diameter strut.
If I heard correctly the purpose for the dome justifies the 2V.
@@diazpty
He said somebody is going to skin it and use it as temporary shelter. When the wind converts just one of those 10ft triangles into a sail, it will be a very temporary strutcture. As said, the struts will have too much sideways deflection under load..
I’ve built domes quite a few times. In concept that is fast and less expensive then a 5v dome, however I agree with John. If you put a cover on it, wind will be it’s enemy. The struts will weaken being that long and eventually it will lose form and be problematic. Or generally speaking somebody will want to try to climb it or hang from a pole and it will benddd. If you have the tools and the know how more struts with less length makes a tighter build. Plus half the fun of a dome is climbing to the top man! The views are excellent!
@@mattiusvalentine3199
I personally would use 1" EMT and not make the struts any longer than 5ft. That would give you a 16ft 2v, 24ft 3V or 31ft 4v. If the dome is to be climbed without using a rope i`d suggest using a strut length no more than 3ft
Did you ever get a cover?
Hey Steven. I'm not sure what they ended up doing with it. I wish I knew.
Ok, I found your channel and subscribed right away. I want to share an idea with you and the rest of humanity. lol Can you please tell me the actual size of the triangles by sides? This is what I 'thunk' up. I want to make molds that will encase aircrete and once cured they could be cemented together held by ty-wraps until they fuse. It could be just the triangles but I thought of casting the entire hexagons. Maybe a wire suspended inside the mold for reinforcement. Like thick ss safety wire. The mold should make the hexagon with all 12 members or spokes of 2" square. So I guess my question is, how big the hexagons to make a dome like 15 feet high. Like your channel. Chock full of great projects. Thanks.
Hey, thanks Edward ! So the triangle side lengths would just be the strut lengths center to center if you’re not using any sort of poles on your dome. You can see the assembly sequence is pretty straightforward. Cool idea! Check out my first geodesic dome video for strut length calculations. I think I have an Excel file on my website too that will do it for you.
Hey Mike, you assembled it backwards. Where I live there are many Geo-domes in the area, that have been built commercially. From what I can tell, most are built from the top down instead of bottom up. In other words, the top star is made on the ground. Next a few people start to lift and then set the star on saw horses. The next layer is built underneath. The saw horses are slowly removed as the layer is completed. A couple guys then start lifting on one side and put the dome back on saw horses. Then another layer is built and so on till the structure is complete. Good luck, your project looks good.
I made a 3f dome same way but a bit smaller. About 20ft. Presently disassembled waiting to be purchased by anyone
? How much?
Have you tried to use T profile fencing posts... milling to plate the angled joint terminals... and bolting with round hubs made out of plumbers soldering flanges...
Why? Because using T shaped fencing posts as a skeleton structure you can cover the dome easily using riveted metal sheets or screwing plywood... hubs construction is better than a bolt in the vertex because if happens you need to remove a strut or some panels for some reasons you can simply do it and reinstall without compromising two points of the entire structure once is completed... I prefer V4 and since I'm rest of the world outside US I prefer metric it is immediate to eyeball.
I made one that exact same shape, but using plastic straws held together with pipe cleaners.
Yep! That works too!
this is a great way to make a greenhouse, a lot of people are using wood as the structure but it will rot
I`ve never seen a conduit dome that looked good covered in poly ;).
You can see the original dome and equipment on my channel
Why your company does not make premake metal tup to sell to the peoples' order?
where is the promised next video?
Hey Farooq. Check out the Geodesic Domes playlist at the end of the video. It's the last video in the playlist. Thanks for watching.
"It needed to be idiot proof because a lot of the friends who help me are idiots."
LOL! seriously.
I would´ve started at the top... at ground level.
build the top first and lift it up, and a hemmer will flatten that stuff.
I tried that... big mistake. It gets way to heavy and starts to flex.
@@daphneblake7889 it must depend on the material as some people do it.
Dome house in Russia th-cam.com/video/oIUP045YZDo/w-d-xo.html
Рациональные планировки купольных домов th-cam.com/video/xrTO3NRP2rw/w-d-xo.html
Ugh... imperial units...
A person would need to have a full metalworking shop and an engineers degree to accomplish this. Way too daunting. Once its built its still not wind stable. Some good info can be gleaned from this but its not a practicle solution for a less skilled person.
The take away for someone with that knowledge would be to make these in kits and sell them.
....you're kidding right? This is beyond simple.
flimsy and dangerous