Re: [PSUBS-MAILIST] status report

[Warren Greenway <opensourcesub@yahoo.com>]

It's one of the ideal materials for underwater
structures. Quite a bit of research on the use of
ferrocement in marine applications (boats and such)
has shown it to be a superior material if weight isn't
an issue. Penetrating sealers can be used on the
cement
to eliminate weeping. 

Warren.

--- Jeff Post <jeffpost@rawbw.com> wrote:
> Brian,
> 
> I really must applaud your innovative design and
> choice of materials. I would be
> curious to hear if anyone in the group has
> information on ferrocement deep sea
> structures. I believe I once saw an article in a
> trade magazine for cement
> technology on spheres that were submerged at fairly
> deep depths, and the water
> intrusion measured after some period of time
> (basically there wasn't very much).
> Does anyone else have any comments about ferrocement
> usage in underwater structures?
> 
> Jeff
> 
> Quoting Brian Cox <ojaibees@ojai.net>:
> 
> > Status Report  ..................from Brian Cox
> > 
> > Project :  ESMAE   Electric SubMersible with
> Articulating Entry
> > 
> > Progress:  1) Have posted my preliminary design on
> the moki exchange.
> > (however it keeps changing and morphing hourly).
> >                    2) Have build scaffolding for
> construction of outer
> > superstructure shell  ( ferro-cement construction)
> >                    3) Have built moch-up of
> pressure hull (so I can get
> > an idea where all these valves are going to go,
> also for testing the
> > cable connections for my stick and rudder
> controls, and also for testing
> > the scrubber and O2 monitor.)
> > 
> > Continuing Education:  Taking machine shop class
> at Ventura collage.
> > 
> > Current reading:  Structures (or why things don't
> fall down)
> > 
> > Comments:  Though I'm sticking to my basic design
> concept of a " Flip"
> > sub.  I've realized that I really do not need trim
> tanks and I will
> > balance the sub with weights.  I've moved my air
> for buoyancy outside
> > the shell and replaced that space with more
> flotation capacity.  I am
> > currently playing with the size of my hard ballast
> tank that will bring
> > the nose of my craft up horizontal and ready for
> cruising, since the
> > nose will be heavy with the battery pod( a benefit
> when flipped).
> > 
> > Future Goals:    1) Settle on design and start on
> steel matrix for
> > ferro-cement shell.
> >                            2)  Start diving more
> with Bob
> > http://covenantdivecharters.com/
> >                            3)  get certified for
> rebreather equipment
> >                            4)  put up home page
> with pictures and info
> > on my progress
> > 
> 
> 


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