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making a concrete 50' diameter 1/2 sphere boat hull – Ideas

Home Forums Research Engineering making a concrete 50' diameter 1/2 sphere boat hull – Ideas

This topic contains 17 replies, has 10 voices, and was last updated by Profile photo of paul paul 2 years, 2 months ago.

Viewing 3 posts - 16 through 18 (of 18 total)
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  • #15766
    Profile photo of Morganism
    Morganism
    Participant

    By the way, some folks just proposed a triangular configuration of cyliders shields the center one from waves or visual observation.

    New one only takes 3 objects to shield center one. Put the garden in the center !

    the original finding was from this project- tsunami protection- japanese.

    Sorry , this site wont let me start posts- or would have put it where it’s more usefull

    #15770
    Profile photo of Ken Sims
    Ken Sims
    Keymaster
    Morganism wrote:
    Sorry , this site wont let me start posts- or would have put it where it’s more usefull

    You can start new forum threads, except not in the forums that are in the Archive section. You need to select the most application forum that is the Community section or the Research section.

    Also, you’ve got image links in your post pointing back to local image files on your hard drive. That’s going to make it kind of hard for the other users to see those images!

    Ken

    #20957
    Profile photo of paul
    paul
    Participant

    I love it when the only answer you want to accept is the one you have given,,, a cone shape with a wide top and a heavy ballest on the bottom removes the complexity of making a form with a r= 25 ft. An inverted “wedding cake” would allow you to build rings and stack them up, adding more rings would give deep water stability and shortening the stack would improve the draft. The lower rings need not be water tight, they canbe filled with ballest later to adjust the profile above the surface and trimming. An outside shallow ring and an inside deep ring could be joined by forming and pouring in the water… BUT the best way to for the 1/2 ball is to float the form IN the h20 and shot crete it like they do when building a water park…this allows you to eliminate the inside form and you sink the form to launch. Form seperation from the ball is done with compressed water… very low psi thru fill ports in the bottom… . The way to solve a problem is to look at it with an open mind.

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