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Modular Island Design

Home Forums Archive Structure Designs Modular Island Design

This topic contains 154 replies, has 35 voices, and was last updated by Avatar of Ken Sims Ken Sims 3 years, 3 months ago.

Viewing 15 posts - 61 through 75 (of 155 total)
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  • #10551
    Avatar of elspru
    elspru
    Participant

    xns wrote:

    Having the grooves extend into the center allows for more of the hexatoon to be reinforced and increases rigidity as opposed to just the edges. Remember, these things will float horizontally, so the forces acting on it will cause compression, flex and torsion, not pull it apart in a way that would tear a corner off.

    King Shannon of the Constitutional Monarchy of Logos.

    So do you have additional support like at the sides?

    at least the edges could have steel beams.

    how much does this structure weigh?

    is it made of ferrocement?

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    #10552
    Avatar of elspru
    elspru
    Participant

    Carl wrote:

    That’s actually a pretty good idea.

    If you align all the units in one direction you might be able to use the sails for station-keeping of the whole community.

    If you make the outer hulls half as wide as the center (minus the distance to the bordering tile) they’ll line up nicely behind each other.

    The key to making something like this actually happen is a low price. So forget everything about optimizing sailing performance and make it really cheaply.

    xmaraner wrote:

    Hey guys,

    Looks like great minds think alike. Of course, the idea of tiling hexagons for a seastead goes back at least to The Millenial Project in the 80′s (which I understand was the starting point for SSI). The Hexmod idea and some of the discussion is similar to the Xmaran plan. Xmaran is a trimaran with a hexagonal plan, currently conceived with a ferrocement hull. There is currently no plan to stack them vertically, although I would anticipate structures being built down, rather than up, at some point.

    Xmaran raft

    This is an open source project and we need some good design input. The more help the sooner we can start building. Since the scale is a bit larger than the Hexmod, it may be awhile before we get to that point however!

    http://Xmaran.org

    [/quote]

    Yes, I’d like to suggest removing excess angles or joints.

    for instance making the interior space flush with the sides.

    the deck space would simply be on the roof.

    the way to get on the boat can be by ladder,

    which can also be a security feature.

    the model you have seems like calm waters,

    on the oceans the waves can be much larger on average,

    so more distance between persons and the waters surface is preferable.

    Also it makes sense to have more internal space as it will be the main residence.

    A minimum internal space per person for indefinite periods of time is about 20m^3.

    http://www.hq.nasa.gov/office/pao/History/SP-483/ch3-2.htm

    700 * (foot^3) = approx. 19.821793 m^3

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    #10620
    Avatar of Altaica
    Altaica
    Participant

    xmaraner wrote:

    Looks like great minds think alike. Of course, the idea of tiling hexagons for a seastead goes back at least to The Millenial Project in the 80′s (which I understand was the starting point for SSI). The Hexmod idea and some of the discussion is similar to the Xmaran plan. Xmaran is a trimaran with a hexagonal plan, currently conceived with a ferrocement hull.

    Hexagons don’t work so well if for detachablity. thay don’t lend themselves to leaving cannels that you can move them through when tileing

    οὐκ ἐμοῦ, ἀλλá½° τοῦ λόγου ἀκούσαντας ὁμολογεῖν σο­φόν ἐστιν ἓν πάντα εἶναί

    #10626
    Avatar of J.L.-Frusha
    J.L.-Frusha
    Participant

    If you want a canal/channel, you can fix triangles to help fix the side hexes and leave a rectangular path… Triangles and squares are pretty-much the othe options, as for best ability to link into a grid, as far as the ‘regular’ polygons…

    Later,

    J.L.F.

    Never be afraid to try something new…

    Remember, amateurs built the ark, professionals built the Titanic.

    #10628
    Avatar of elspru
    elspru
    Participant

    J.L. wrote:

    If you want a canal/channel, you can fix triangles to help fix the side hexes and leave a rectangular path… Triangles and squares are pretty-much the othe options, as for best ability to link into a grid, as far as the ‘regular’ polygons…

    Later,

    J.L.F.

    Never be afraid to try something new…

    Remember, amateurs built the ark, professionals built the Titanic.

    You make a good case for hexagons.

    I read recently that ferrocement prefers to be molded in curves.

    though perhaps with enough reinforcement the wall will hold as flat plane.

    I was thinking we could have beams going across, like those that support floor boards.

    like the roof in this picture

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    #10630
    Avatar of elspru
    elspru
    Participant

    Oh I redid my calculations for the Octstead and the Hexstead.

    Octagonal Hull Stead
    roomHeight 2.06158430208
    hullHeight 3.335713494631711
    roomWidth 5.397297848572926
    roomDiamter 5.841993093950253
    hullSide 2.235633969046033
    moundDepth 1.5808319397634463
    moundHeight 0.6370645962758554
    moundSlant 1.7043711220284092
    Area
    floorArea 12.066382411328705
    deckArea 4.99805924355252
    wallArea 4.608947895782107
    moundArea 26.04922099183253
    hullArea 88.97002514992192
    Volume
    moundVolume 9.8097894354876
    roomVolume 24.875864562089475
    hullVolume 44.49544343306468

    and here’s a hexagonal version,

    this one has a v shaped boat bottom,

    and a hexagonal platform on the attic:

    Hexagonal Seasted of
    roomHeight 2.06158430208
    roomDiameter 5.397297848572926
    roomWidth 4.67419704865525
    roomWall 2.698648924286463
    moundHeight 0.6370645962758554
    cellarVerticie 2.7728247900616805
    cellarSideHyp 2.4223709072399466
    cellarKeelHyp 1.1894642509592293
    Area
    floorArea 18.921025255884675
    deckArea 11.693836628825276
    wallArea 33.3809535548043
    atticArea 25.5678604502155
    cellarArea 18.836904479542994
    hullArea 77.78571848456279
    Volume
    atticVolume 3.2009846698920925
    cellarVolume 4.735713299586809
    roomVolume 39.00728864679106
    hullVolume 46.94398661626997

    seems like hexstead has more volume, but it’s just a difference in mound shapes.

    this is a monohull version of the trimaran being showcased earlier,

    it would also be harder to stack, though better for transport,

    alternatively we can make the bottom just like the attic,

    so as to make it stackable, though transporting would be somewhat more difficult, and increased risk of spin.

    potentially we might be able to stack the v-bottomed boats,

    simply by putting them between decks, and tethering into place.

    though maybe just plain flat hexagonal prisms with vericie joints will suffice.

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    #10631
    Avatar of elspru
    elspru
    Participant

    Oh I redid my calculations for the Octstead and the Hexstead.

    Octagonal Hull Stead
    roomHeight 2.06158430208
    hullHeight 3.335713494631711
    roomWidth 5.397297848572926
    roomDiamter 5.841993093950253
    hullSide 2.235633969046033
    moundDepth 1.5808319397634463
    moundHeight 0.6370645962758554
    moundSlant 1.7043711220284092
    Area
    floorArea 12.066382411328705
    deckArea 4.99805924355252
    wallArea 4.608947895782107
    moundArea 26.04922099183253
    hullArea 88.97002514992192
    Volume
    moundVolume 9.8097894354876
    roomVolume 24.875864562089475
    hullVolume 44.49544343306468

    and here’s a hexagonal version,

    this one has a v shaped boat bottom,

    and a hexagonal platform on the attic:

    Hexagonal Seasted of
    roomHeight 2.06158430208
    roomDiameter 5.397297848572926
    roomWidth 4.67419704865525
    roomWall 2.698648924286463
    moundHeight 0.6370645962758554
    cellarVerticie 2.7728247900616805
    cellarSideHyp 2.4223709072399466
    cellarKeelHyp 1.1894642509592293
    Area
    floorArea 18.921025255884675
    deckArea 11.693836628825276
    wallArea 33.3809535548043
    atticArea 25.5678604502155
    cellarArea 18.836904479542994
    hullArea 77.78571848456279
    Volume
    atticVolume 3.2009846698920925
    cellarVolume 4.735713299586809
    roomVolume 39.00728864679106
    hullVolume 46.94398661626997

    seems like hexstead has more volume, but it’s just a difference in mound shapes.

    this is a monohull version of the trimaran being showcased earlier,

    it would also be harder to stack (than octopod), though better for transport,

    alternatively we can make the bottom just like the attic,

    so as to make it stackable, though transporting would be somewhat more difficult, and increased risk of spin.

    potentially we might be able to stack the v-bottomed boats,

    simply by putting them between decks, and tethering into place.

    though maybe just plain flat hexagonal prisms with center verticie joints will suffice.

    So much like what the original author xns suggested,

    simply each having living room inside.

    in addition to stackability.

    though a flat bottomed might “pound” on the waves.

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    #10633
    Avatar of J.L.-Frusha
    J.L.-Frusha
    Participant

    Using the Tri-maran hulls, stacked, gives halls and covered space that could be open to airflow and foot traffic, as the stack gets higher… Hexes will join better than octs.

    Later,

    J.L.F.

    Never be afraid to try something new…

    Remember, amateurs built the ark, professionals built the Titanic.

    #10643
    Avatar of OceanPhoenix
    OceanPhoenix
    Participant

    Clever. I like Hexagons, they are such simple shapes to work with. Is this a floating island? or a supported one?

    #11281

    Aquaculture

    Here’s some photos of our fish(Lates calcarifer), in our self-raising plastic cages. We currently have 3400 of them at about 3 & 6 inches in 2 separate cages. We’ve another 2 32,000 liter cages that will be stocked with Epinephelus coioides once they’re available.

    Hexatoon

    Here are photos of the prototype hexatoon. There was a problem with the vertical slots getting stuck in the mould, so the design was modified. It shouldn’t be more than a few weeks before we see a working design.

    
    
    #11282

    Congrats to the Hadean Team – that looks great – obviously you have a mold, you have a fabrication site, the module looks much more solid than the ones used for small boatdocks – i can not wait to see a dozend of them assembled to a flat raft under sea conditions – that could be the first step to seasteading…

    Well done!

    Wil

    #11284
    Avatar of Snowmeow
    Snowmeow
    Participant

    Putz, that’s a great news.

    Congratulations to Hadean Team, this Hexatoon is really big!

    Well Done² !

    And congrats by the aquaculture, too.

    ______________________________________

    “A Dream you dream Alone, is a Dream you dream Alone; But a Dream you dream Together becomes Reality.” Raul Seixas

    #11288
    Avatar of
    Anonymous

    Very interesting. It looks just like a snowflake.

    The corners look very sharp though, for an inflatable or at least air-filled structure.

    And the “petals” or whatever you call them look like they are cantilevered a fair bit out from the center. I wonder if there will be fatigue cracks where they attach eventually.

    Hadean wrote:
    
    

    #11292
    Avatar of J.L.-Frusha
    J.L.-Frusha
    Participant

    Looking good! Have you considered foam-filled? Would weigh a bit more, but would be more damage resistant. Just a thought. Pipes should be stronger. PVC work-hardens, as well as oxidizing with age (in my experience). Is there an FRP in the correct diameter? Could foam-fill the pipes for added rigidity, too…

    Later,

    J.L.F.

    Never be afraid to try something new…

    Remember, amateurs built the ark, professionals built the Titanic.

    #11293

    To answer the questions so far;

    @Carl: The Hexatoons are rotationally moulded, hence the sharp(and precise) angles. As for fatigue cracks, the hexatoon will not be exposed to UV long enough for the plastic to harden.

    @J.L: Yes, and I agree completely with your points but, there were 2 distinct problems that foam would create. The first being that we won’t be able to intentionally sink and re-float the hexatoons. Secondly, it makes them 10% more expensive. This is a huge concern considering they make up more than half the cost of our platforms. Keep in mind that 10% of $30,000,000 is 3 Million Dollars. Which is the difference between a beach made of Aragonite(which promotes reefs) and one made of silica dioxide(which doesn’t support reefs).

    @Ellmer: Congratulations to you as well, I’d be very interested in seeing more of your own progress.

    Finally, special thanks to our shareholders and Alan Light for dropping by and giving advice/lessons on basic construction.

Viewing 15 posts - 61 through 75 (of 155 total)

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