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seastead capeable structures floated out rion-antirion pylon seastead

Home Forums Archive Structure Designs seastead capeable structures floated out rion-antirion pylon seastead

This topic contains 12 replies, has 5 voices, and was last updated by Avatar of ellmer - http://yook3.com ellmer – http://yook3.com 2 years, 5 months ago.

Viewing 13 posts - 1 through 13 (of 13 total)
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  • #1373

    Big floating concrete structures in disc shape has already been built and floated out – they have been used for other purposes (bridge pylon) but their engineering could be taken 1:1 and used for seasteading. Let me postulate the rion-antirion seastead. Take the 70m diameter pylon disc and float it out for housing purpose.

    The nokossa barge installed 60km offshore as we speak is only 50m wide, the rion-antrion pylon is 70m wide so even more stable. We can consider the engineering for floating out a 70m wide offshore capeable flat raft structure as solved and tested.

    See the building and floating out on video: ( http://www.youtube.com/watch )

    Let me hear your thoughts…

    Wil

    concretesubmarine.com

    European Submarine Structures AB

    #11713
    Avatar of TheTimPotter
    TheTimPotter
    Participant

    As interesting as this is, it is designed to ultimately rest at the bottom of the gulf not in the open ocean. I think the nkossa barge looks better overall, although I do think some seasteads will ultimately look similar to this bridge support.

    Watching them construct the pillar in the open water was neat. Some steads might plan expansions in that spirit.

    #11714
    Avatar of J.L.-Frusha
    J.L.-Frusha
    Participant

    That’s the same basic cylindrical ferrocement technique I described as a way to make the spar-buoys and FLIP type structures…

    Later,

    J.L.F.

    Never be afraid to try something new…

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

    #11796
    Avatar of Alan
    Alan
    Participant

    Could something like this be built much bigger as a sort of floating atoll – functioning as a breakwater to protect ships from storms while providing living and working quarters in a circle around the “port”? Something like that might be useful as a transshipment point on some sealanes, or simply as a place for residents to keep their boats safe while living in the community. Naturally, an opening or two would be necessary in the ring structure, but such opening could be bridged both above and below the space required for a ship’s entrance. In fact, with floodable compartments underneath the central area, the whole thing could be used as a drydock if necessary.

    I’m not sure if I described all this very well, but I think readers will get the basic idea. Think of the fact that 1/10th of an iceberg is above the surface. ;-)

    #11801
    Avatar of J.L.-Frusha
    J.L.-Frusha
    Participant

    Water World Atoll was designed to withstand Category 6 storms, I believe… The design is out there and could be used to base a small, working community project on… I’ve tried suggesting that…

    Later,

    J.L.F.

    Never be afraid to try something new…

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

    #11803

    I think what you have in mind is a structure like the ekofisk floating concrete tank

    ekofisk tank in construction ekofisk tank floating out in parts ekofisk ring completed

    This structure is a oil storage tank with a outer breakwater ring that applies the principles of a “waterworld ring lagoon” on large scale. Also present the assambly in several modular parts as the structure would be too big for any existing drydock.

    This is one of the oldest and most proven floating concrete structures. It was built for the north sea (design wave height 75 feet) and is in use since 1973. No problem no maintenance. The living quaters and installations for the handling are on top ot the tank.

    Read more: ( Ekofisk Tank )

    Wil

    concretesubmarine.com

    European Submarine Structures AB

    #11806
    Avatar of Alan
    Alan
    Participant

    It appears my innovative design idea was so compelling that several people copied it preemptively!

    Mr. Frusha: could you provide a link? I’m not sure if the atoll you mention is from the movie “Waterworld” or something else.

    ellmer: The second photo, of the tank in the middle of construction, probably gives the best idea of what I’m after. Imagine that, with the tank underneath it, capable of being raised as a drydock. Now, just to make it big – really big – with room for several large ships inside and an airport and a city on the rim. ;-)

    We’ll need a fleet of tugboats to move it…

    #11811
    Avatar of OCEANOPOLIS
    OCEANOPOLIS
    Participant

    But move it where? Here we go again,…Stationary vs. mobile.

    #11814

    The Ekofisk tank has no need and no way to escape from weather it is obviously built to stand all the sea states the sea can bring up. A waterworld seastead (similar to the film waterworld for which a actual ring structure was built) would have to bring up that kind of “stand weather quality” – it seems to be a engineering problem that can be solved in the real world.

    Waterworld ring lagoon seastead structure built for the film waterworld with Kevin Costner

    The factor mobil is in the boats that are sheltered inside the lagoon formed by the ring structure.

    Wil

    concretesubmarine.com

    European Submarine Structures AB

    #11816
    Avatar of OCEANOPOLIS
    OCEANOPOLIS
    Participant

    that we can build concrete structures that can stand most of the seastates.

    But Ekofisk tanks were flooded and the structure was secured to the bottom. Therefore, was intended to be stationary from conception. The Waterworld “island” was free floating on an ocean that was covering the whole planet. No need for anchoring or dynamic positioning since it didn’t matter. It was all water, everywhere. But that was fiction….

    So my question still stands since the implication was that the structure would be stationary (secured to the seaflloor), being modeled after Ekifisk.

    #11818
    Avatar of J.L.-Frusha
    J.L.-Frusha
    Participant

    Alan wrote:

    Mr. Frusha: could you provide a link? I’m not sure if the atoll you mention is from the movie “Waterworld” or something else.

    I’d love to give a link, but I saw it in a TV series “Movie Magic” which I haven’t been able to find as an available DVD set… It was included on one of the VHS editions of “Waterworld”(Kevin Costner)…

    Later,

    J.L.F.

    Never be afraid to try something new…

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

    #11829
    Avatar of J.L.-Frusha
    J.L.-Frusha
    Participant

    That set was designed and built to be anchored. That’s part of my point. They did it in the deep waters around Hawaii, out of sight of the typical traffic and other markers that indicate land, anchored in the depths that surround the islands, not in some movie-lot lagoon. The top look like crap, but the platforms were built, towed into place, assembled and anchored, then the movie set was built on that base. Point is, a structured ring, providing a sheltered area of calmer waters, while still something do-able and livable… It’s been done. The set wasn’t livable, but the platforms were. After shooting, they disassembled it and towed it to California, then re-anchored it, in a new location…

    Later,

    J.L.F.

    Never be afraid to try something new…

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

    #18408

    Have a look at the making of the Rion-Antirion Bridge Pylon and other outstanding floating concrete structures at: ( http://concretesubmarine.activeboard.com/f541915/oustanding-floating-concrete-structures/ )

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