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Re: [PSUBS-MAILIST] Underwater tent...
Good thing I didn't write about the first three attempts.
Hopefully, you'll post your ' w.i.p.' on Restorides? I'd be
interested in how it goes.
--Steve
On Mon, 19 Apr 2004 10:29:07 -0700 (PDT) Warren Greenway
<opensourcesub@yahoo.com> writes:
> Yeah, I cracked a smile! Thanks for sharing that! I
> think that my first "manned tent" will be similar in
> dimensions.
>
> Warren.
>
> --- Steven Mills <cirtemoeg@juno.com> wrote:
> > Wow, we're talking a long time ago, but here goes.
> >
> > First, I'm assuming that the setting and morphology
> > of the pond
> > aren't significant.
> > Suffice it to say, , the only problems I encountered
> > were in the
> > construction,
> > the materials available to me, and my own
> > inexperience and not so
> > much the dynamics of the pond.
> >
> > My tools were pipe benders, hacksaw, pipe threaders,
> > and the ol'
> > Sears craftman's tool set [ the old "good" tool set
> > of a time passed ].
> > The materials were ; conduit and plumbing fittings,
> > construction
> > grade clear visaquene plastic, pitch for sealant,
> > rope, string, small
> > canvas bags used with sand and gravel for weight and
> > trim, and
> > homemade pinch clamps to hold plastic to frame at
> > various points
> > to keep it in place [ without damaging or poking
> > holes in the plastic.]
> > Basically, the stock came from a loose assortment of
> > parts from
> > my granddad's barn. The base frame was sized and
> > cut from
> > stock galvinized 1inch diam. conduit, the top frame
> > was sized and
> > cut from half inch galvinized stock. I rammed and
> > packed the pipe for
> > the base with sand using rebar and pieces of burlap
> > wadding.
> > The top frame was left hollow. I made four tents
> > the last being
> > successful at 4feet by 6feet base at 3feet in
> > height. 3 half round
> > frame members with a longitudinal supporting member
> > and vertical
> > supports at each end. Despite its weight it was
> > slightly positive
> > bouyant. So, I added sand filled canvas bags lashed
> > to the bottom
> > frame. When I needed to replenish the air or take it
> > to surface I simply
> > unlashed the bags and it would rise slowly with a
> > little help.
> > It was crude and it did leak, but there was always a
> > good size pocket
> > of air to enable me to explore a short distance and
> > return for air.
> > I would say it gave me about 20 minutes under before
> > I had to surface.
> > I could sit in it, but the plastic would fog up a
> > lot, but a splash of
> > water
> > cleared it up. Visaquene is hygroscopic so it would
> > opaque and degrade
> > out of water while being stored. It was fun while it
> > lasted. It was
> > destroyed
> > when my cousins and a few neighbor kids thought it
> > would be fun
> > playing 'depth charge' with large rocks [ and with
> > me in it ! ]
> >
> > Well, did that help?... or at least crack a smile?
> >
> > Shallow, tidal, and near shore dynamics is a
> > different story compared
> > to a pond. You've got your work cut out for you
> > that's for sure.
> >
> > cheers, --Steve
> >
> >
> > On Sun, 18 Apr 2004 21:34:22 -0700 (PDT) Warren
> > Greenway
> > <opensourcesub@yahoo.com> writes:
> > > That is similar to the proposal by Michael Savage
> > > in his book Millenial Project. So, what I want to
> > know
> > > is this: How large was your electrical conduit
> > > underwater tent? I'm still very interested in
> > > collecting data on swell-induced pressure
> > variations
> > > in such a habitat.
> > >
> > > Warren.
> > >
> > > --- Steven Mills <cirtemoeg@juno.com> wrote:
> > > > ...and, if you feel real ambitious or want to
> > add a
> > > > split-level
> > > > to that underwater tent, may I suggest this :
> > > >
> > > > http://fun.supereva.it/artificialisle/index.html
> > > >
> > > >
> > > > Or, perhaps we should all chip in and build a
> > pSubs
> > > > headquarters
> > > > and convention center ?
> > > >
> > > > :- ) --Steve
> > > >
> > > >
> > > > On Sun, 18 Apr 2004 09:37:53 -0700 (PDT) Warren
> > > > Greenway
> > > > <opensourcesub@yahoo.com> writes:
> > > > > Cool! Thanks! One thing about that link that
> > is
> > > > > interesting is that they are measuring PAR. I
> > told
> > > > the
> > > > > company I was working for that underwater PAR
> > > > > measurments would become important in the near
> > > > future.
> > > > > They laughed. Hmmm. I designed a PAR
> > instrument
> > > > once
> > > > > before!
> > > > >
> > > > > Warren.
> > > > >
> > > > > --- Steven Mills <cirtemoeg@juno.com> wrote:
> > > > > >
> > > > > > This isn't exactly a tent for habitation or
> > > > > > saturation diving. But it is
> > > > > > similar to something I built as a 14 year
> > old
> > > > kid
> > > > > > quite by accident.
> > > > > > I'll forgo the story behind it, but I ended
> > up
> > > > > > building a small quonset
> > > > > > style tent using electrical conduit pipe for
> > a
> > > > frame
> > > > > > [ that's all I had
> > > > > > available to me ] the bottom part of the
> > pipe
> > > > frame
> > > > > > packed with sand.
> > > > > > It wasn't elaborate or incorporate any
> > venting,
> > > > but
> > > > > > was great on a
> > > > > > hot summers day and watching blue gill and
> > bass
> > > > [ or
> > > > > > were they
> > > > > > watching me : ) ] It was in a pond about
> > 15
> > > > feet
> > > > > > under.
> > > > > >
> > > > > > --Steve
> > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> http://sofia.usgs.gov/publications/ofr/00-361/sharq.html
> > > > > >
> > > > > >
> > > > > > On Sat, 17 Apr 2004 15:16:18 -0700 (PDT)
> > Warren
> > > > > > Greenway
> > > > > > <opensourcesub@yahoo.com> writes:
> > > > > > > Yeah, I was thinking of something
> > > > similar...But
> > > > > > here's
> > > > > > > the catch. Make your panels out of the
> > fiber
> > > > > > > reinforced
> > > > > > > recycled tire material and use belting and
> > > > > > adhesive
> > > > > > > to hold the pieces together. I like the
> > > > concrete
> > > > > > > approach, but I wonder how you would
> > assemble
> > > > it?
> > > > > > > Would you pour the sections on a barge and
> > > > lower
> > > > > > them
> > > > > > > into place over a temporary structure? I
> > have
> > > > > > wondered
> > > > > > > about building on the bottom, but it seems
> > > > that
> > > > > > the
> > > > > > > uncertain and silty nature of the bottom
> > would
> > > > > > make
> > > > > > > it more desirable to float on a
> > tether...Hmmm.
> > > >
> >
> === message truncated ===
>
>
>
>
>
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