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Thread: Geodesic dome house.

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    Avalon Member Hughe's Avatar
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    Default Re: Geodesic dome house.

    I spent good hours to design the door frame so that it will withstand few tons of weight and give rigidity to the dome. Concrete and reinforcement bars were not my option.



    Two side panels


    Three top plates


    Six cross bars using old lumbers


    I made a mistake on side panel assembly. I swaped the left and right and, due to the design flaw, I did not secured the top sides.


    One more day of work will finish the door frame:
    - install the center panel
    - another layer of black paint
    Last edited by Hughe; 16th September 2015 at 19:06.
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    Default Re: Geodesic dome house.





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    Default Re: Geodesic dome house.

    Essential handtools for construction are a pickaxe, two shovels - pointy one, flat one.

    Sharpened the pickaxe






    Measuring the height to the top. It was around 75 cm.


    I ran out of earth and found digging spot for the rest walls, 65 cm to stack.
    Two hundreds of onion bag will be sufficent.
    Last edited by Hughe; 30th September 2015 at 02:05.
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    Default Re: Geodesic dome house.

    Checking the angles of three sides of the window frame against the normal plane (triangle)




    Three window frames


    Applied a can of spray paint on the window frames
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    Default Re: Geodesic dome house.



    I need to fill up the fifteen triangles which firms the roof cap.
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    Default Re: Geodesic dome house.









    The dome has consumed about 650 to 670 earth bags, around 8,321 kg.
    My estimate of total earth quantity is between 8.5 ton and 8.7 ton because the sample earth bag was medium size.



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    Default Re: Geodesic dome house.

    A bag of lime plaster (CaO 80%)


    What was I thinking?
    I was mixing lime plaster with water in a plastic container. I knew lime plaster generates heat when it meets water but did not expect high temperature.


    The heat destroyed brand new plastic container I bought for 4,000 KRW.




    Anyway I ended up finishing the work early yesterday.
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    Default Re: Geodesic dome house.

    Hey Hughe!
    It's good to see you getting it done. Great work and even more importantly working it out, trial and error making success! You've put up an inspiring series of works for us.
    By the way, we use lime plaster to exterior coat a lot of adobe here in the Southwest, that is, when we have to cover an adobe roof or dome, trying to leave exterior and interior walls coated with an earthen plaster as they can be repaired more easily.
    We built a small adobe chapel for a fellow student with a vaulted roof that had to have lime plaster on its exterior to keep it from deteriorating, just like you are doing with your dome.
    The process of building adobe ovens, ornos, and domes by stacking adobe bricks (10 x 4 x 14) is fun and very strong if done right.
    Keep up the great work and send us an audio recording or video of you singing (or chanting or praying...) inside after you're finished, if you will.
    Thank You !!! !!!!!! !!!!!!!!!

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    Default Re: Geodesic dome house.

    WOW!! What a labour of LOVE
    Love and Light Always/Sandy

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    Default Re: Geodesic dome house.

    One coating is done. I used five bags of lime plaster.




    Close shot


    @Hey it's me

    Thanks for the kind words. When the dome house is done, I'll release a documentary film that contains background music and voice, dome build guide which covers every aspect of geodesic dome house from tool selection, design and materials under GPL license.

    @sandy

    I realized that the essence of labor that's directly related to human survival is sacred, invaluable.
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  21. Link to Post #71
    Avalon Member Hughe's Avatar
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    Default Re: Geodesic dome house.

    So far I spent about $626 (711,260.00 KRW) to build this dome.

    Bill of Material

    Quote
    Earth, 8.5 ton, W0 (free of charge by Nature)

    Onion mesh bag x750
    large x150, W15,000
    large x500, W50,000
    large x50, W5,000
    medium x50, W5,000
    sub total: W75,000

    Fasteners
    6x60 bolt x250, nuts 6, washer, W14,500
    6x60 bolts and etc., W28,800
    3/8 bolts and nuts, W6,000
    U-bolt 20A x20
    U-bolt plate x20, W6,560
    Washer x60
    U-bolt 20A x30, W6,000
    U-bolt 25A and etc., W2,000
    Screw for wood, x500, W7,500
    Sub total: W71,360

    Barbed wire, total length 270m
    90m roll x1- W37,400
    90m roll x1 - W30,000
    90m roll x1 - W34,000
    sub total: W101,400

    Steel pipe - diameter 26.5mm x 5m, x30, W189,000
    H beam - 200*200 x2, W32,000
    (Delibery charge, W50,000)
    Sheet metal
    W36,000
    W15,000
    sub total: W322,000

    PP rope - 5 mm x2, W12,000
    Cement - 40kg x10, W50,000
    Square wire net x6, W15,000
    Crushed rock, 2 ton, W50,000, donation

    Paint
    Primer, W16,000
    Solvant x1, W4,500
    Spray paint x1 can,W2,000
    Brush x1, W1,500
    Brush x1, W1,500
    sub total: W25,500

    Lime plaster x10, W30,000
    Fertilizer container, W4,000
    Metal container, W5,000
    sub total: W39,000

    Total: 711,260.00 KRW
    Marked the holes to be patched.




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  23. Link to Post #72
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    Default Re: Geodesic dome house.

    Sample window frame

    I found two design flaws from it.
    - a bit small
    - the width of frame is too wide.





    Measurement of three window frames



    Applied black paint to prevent water absorption and wraping


    It took full two days to make and install the three window frames.

    West side


    North side


    East side


    Started coating lime plaster one more time to finish the surface.


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    Default Re: Geodesic dome house.

    I definitely missed the window of plaster curing weather, above 10 degrees of zero and dry days.
    For the past five months, I've been watching it how plaster react to water.
    The dome leaks water when it snows or rains.

    I'm designing another dome that will serve as water proof barrier and insulation zone.

    4/15/2016

    Measuring the circumference of dome


    Plaster layer of the roof turned into white sand during the winter.


    Cracks on the side wall here and there.


    I guess over 80 percent of earth bags soaked water.


    Weeds are resilient.
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    Default Re: Geodesic dome house.

    NASA hasn't disclosed it yet. Why?
    I obtained excerpt version of it by Jay Salsburg.

    NATIONAL AERONAUTICS AND
    SPACE ADMINISTRATION

    STRUCTURAL DESIGN CONCEPTS FOR
    FUTURE SPACE MISSIONS

    Progress Report for period
    May 1, 1968 to October 31, 1968

    N69-29417
    CODE 1
    CR# 101577

    Jullan H. Lauchner
    R. Buckminster Fuller
    Joseph D. Clinton
    Mark B. Mabee
    Richard M. Moeller
    Richard Flood

    Joseph D. Clinton advanced Geodesic technology further. He apparently had provided essential data of geodesic domes to some writers whose books became authoritative study materials in public domain.

    Advanced structural geometry studies. Part 1: Polyhedral subdivision concepts for structural applications
    http://ntrs.nasa.gov/archive/nasa/ca...9710028059.pdf

    Advanced structural geometry studies. Part 2: A geometric transformation concept for expanding rigid structures
    http://ntrs.nasa.gov/archive/nasa/ca...9710028061.pdf

    The geodesic dome design program I uses, Geodome is Open Source software which has been stopped in development. It's written by C language and OpenGL graphic library in Linux in 2005.

    I decided to port the source code of Geodome to Python language and OpenSCAD module that builds dome parts for small dome models using a 3D Printer before building big ones.



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    Default Re: Geodesic dome house.

    I'll be able to use my 3D Printers to build prototype domes soon.
    Python version of Geodome I've been developing is functional now. I already put a name on it as pydome, which I would have released as GPL license when it's done.

    This dome is a test model.
    Frequency: 10
    Radius: 30.00 mm
    Vertices: 842
    Edges: 2371
    Faces: 1500

    842 vertices




    Each color represents a group of edges that have equal length.


    It took 35 minutes to generate the STL model for 3D Printing in OpenSCAD.


    Source link: http://www.thingiverse.com/thing:1593404

    I gotta make a complete package for building a dome house. Anybody who want to build a geodesic dome structure or dome house should spend as little money and time as one spare. That's the beauty of Open Source.

    When Open Source hardware and software meets money becomes irrelevant. It gives the power of manifestation to an individual or an organization. Once people know the beauty and experience accomplishment that affects the surrounding, they can not go back to zombie-like existence.

    I think a dome house needs two domes. Outer dome acts as shell that protects natural elements, inner dome which supports Earthbags or insulation material. Space between outer dome and inner dome serves as heat barrier.
    Last edited by Hughe; 28th May 2016 at 03:45.
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