RE: [PSUBS-MAILIST] inertia calculation for stiffeners

["Gregory B. Snyder" <snyder@mnrad.com>]

Horray for Minnesota - 
I'm in Minneapolis too -
My goal is the Edmund Fitzgerald someday - But I've got an ambient hull
buried deep in the garage awaiting some free time to pursue.
Greg Snyder
Edina, MN

-----Original Message-----
From: owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org] On Behalf Of Tom
Sent: Monday, June 21, 2004 7:07 PM
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] inertia calculation for stiffeners

can't help you...new to the board here.  I'm from Mn...mpls...have
contacts
to people who can build 1/4 " steel tubes, nice to see someone from
MN....in
the process of cashing out a bunch of equity.... I love subs...been
thinking
about building one for a few years. The builders I'm talking about used
to
make my furnace linings not bad on the price...........12' long by  4'
high
should be less then 1800$. I'm not trying to sell you anything, Just
starting in this with a buddy of mine. If I was selling...it would be a
home
(x-foundry...now REALTOR). One day maybe we could dive Superior.







----- Original Message ----- 
From: "gordon alexander" <gordon@curio.com>
To: <personal_submersibles@psubs.org>
Sent: Monday, June 21, 2004 6:15 PM
Subject: [PSUBS-MAILIST] inertia calculation for stiffeners


> I have been trying to use the formulas in section 6 (Metallic Pressure
> Boundary Components) of the ABS "Rules for Building and Classing
Underwater
> Vehicles, Systems and Hyperbaric Facilities". I have a question for
any of
> you fellows out there who have a grasp of the inertia calculations for
> stiffeners in pressure boundaries. I note that the inertia formulas
for
both
> heavy and non-heavy stiffeners (19.15.1 - pg 67 and 19.15.2 - pg 68)
contain
> "P". This is the external applied pressure, no? What is it doing in a
> formula used to determine the failure pressures of pressure barriers?
It
> seems a bit circular to me at this point. My head hurts:-(
> Can anyone tell me what is going on here?
>
> Gordon Alexander
> Shakopee, MN
>
>
>
>
>
>
************************************************************************
>
************************************************************************
>
************************************************************************
> The personal submersibles mailing list complies with the US Federal
> CAN-SPAM Act of 2003.  Your email address appears in our database
> because either you, or someone you know, requested you receive
messages
> from our organization.
>
> If you want to be removed from this mailing list simply click on the
> link below or send a blank email message to:
> removeme-personal_submersibles@psubs.org
>
> Removal of your email address from this mailing list occurs by an
> automated process and should be complete within five minutes of
receipt
> of your request.
>
> mailto:removeme-personal_submersibles@psubs.org
>
> PSUBS.ORG
> PO Box 311
> Weare, NH  03281
> 603-529-1100
>
************************************************************************
>
************************************************************************
>
************************************************************************
>




************************************************************************
************************************************************************
************************************************************************
The personal submersibles mailing list complies with the US Federal
CAN-SPAM Act of 2003.  Your email address appears in our database
because either you, or someone you know, requested you receive messages
from our organization.

If you want to be removed from this mailing list simply click on the
link below or send a blank email message to:
	removeme-personal_submersibles@psubs.org

Removal of your email address from this mailing list occurs by an
automated process and should be complete within five minutes of receipt
of your request.

mailto:removeme-personal_submersibles@psubs.org

PSUBS.ORG
PO Box 311
Weare, NH  03281
603-529-1100
************************************************************************
************************************************************************
************************************************************************






************************************************************************
************************************************************************
************************************************************************
The personal submersibles mailing list complies with the US Federal
CAN-SPAM Act of 2003.  Your email address appears in our database
because either you, or someone you know, requested you receive messages
from our organization.

If you want to be removed from this mailing list simply click on the
link below or send a blank email message to:
	removeme-personal_submersibles@psubs.org

Removal of your email address from this mailing list occurs by an
automated process and should be complete within five minutes of receipt
of your request.

mailto:removeme-personal_submersibles@psubs.org

PSUBS.ORG
PO Box 311
Weare, NH  03281
603-529-1100
************************************************************************
************************************************************************
************************************************************************