<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:14pt"><div><span>Hi Les,</span></div><div style="color: rgb(0, 0, 0); font-size: 18.88888931274414px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span>I've been using this free design software for years. It doesn't do everything but</span></div><div style="color: rgb(0, 0, 0); font-size: 18.88888931274414px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span>is good for rough calculation on basic shapes like cylinders, hemispheres, tubes. </span></div><div style="color: rgb(0, 0, 0); font-size: 18.88888931274414px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande',
sans-serif; background-color: transparent; font-style: normal;"><span>It will show you the weight of your material, the displacement </span><span style="background-color: transparent;">& crush depth.</span></div><div style="background-color: transparent;">Alan</div><div style="background-color: transparent; color: rgb(0, 0, 0); font-size: 18.88888931274414px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-style: normal;"><span style="background-color: transparent;"><a href="http://www.deepsea.com/under-pressure-upwin/">Under Pressure Design Software | Deep Sea Power & Light</a><br></span></div><div style="width:450px; font-family: 'Georgia', 'Times', 'Times New Roman', 'serif';" contenteditable="false" id="enhancrCard_0" class="link-enhancr-attachment link-enhancr-element"><table class="link-enhancr-element" cellspacing="0" cellpadding="0" style="width:450px; height:170px; position:
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href="http://www.deepsea.com/under-pressure-upwin/" class="link-enhancr-card-urlWrapper link-enhancr-element" style="text-decoration: none !important; color: #000000 !important;"><span class="link-enhancr-element link-enhancr-card-title" style="margin: 0; font-weight: normal;margin-bottom: 4px; font-size: 18px; line-height: 21px; max-height: 43px; color: #000000; overflow: hidden !important; display: inline-block;">Under Pressure Design Software | Deep Sea Power &...</span></a><div style="font-size: 13px; line-height: 20px; color: #999999; max-height: 81px; font-family: 'Georgia', 'Times', 'Times New Roman', 'serif';overflow: hidden;" class="link-enhancr-card-description link-enhancr-element">Design Loop allows variation of single parameter Calculates both thin wall and thick wall collapse pressures Equations from Roark & Young’s f...</div></div></div></td><td class="link-enhancr-element" rowspan="2" style="width: 1px; background-color:
#e5e5e5;"><div class="link-enhancr-element" style="width: 1px; background-color: #e5e5e5;"></div></td></tr><tr><td class="link-enhancr-element" style="width: 100%; vertical-align: middle; font-family: 'Arial', 'Helvetica Neue', 'Helvetica', 'sans-serif';"><div class="link-enhancr-element" style="font-size: 0pt; padding: 7px 20px 9px 15px;"><a href="http://www.deepsea.com/under-pressure-upwin/" class="link-enhancr-card-url link-enhancr-element" style="color: black; text-decoration: none !important;cursor:pointer !important;" target="_blank"><span class="link-enhancr-element link-enhancr-view-on" style="display: inline-block; line-height: 11px; max-width: 179px; min-width: 119px; overflow: hidden; max-height: 13px; word-break: break-all;"><span class="link-enhancr-element link-enhancr-mobile-no-resize" style="vertical-align:middle; font-size: 9px; line-height: 11px; color: #999999; -moz-text-size-adjust: none; -ms-text-size-adjust: none;
-webkit-text-size-adjust:none; text-size-adjust:none;">View on <span style="font-weight: bold" class="link-enhancr-view-on-domain">www.deepsea.com</span></span></span></a></div></td><td class="link-enhancr-element" style="vertical-align: middle; width: 100px; font-family: 'Arial', 'Helvetica Neue', 'Helvetica', 'sans-serif';"><div class="link-enhancr-element link-enhancr-preview-wrapper" style="padding: 9px 20px 12px 0px; max-width: 100px; min-width: 80px; overflow: hidden; text-align: right; line-height: 11px; max-height: 13px; font-size: 0pt;"><span class="link-enhancr-element link-enhancr-preview-by link-enhancr-mobile-no-resize" style="vertical-align:middle; font-size: 9px; line-height: 11px; color: #999999; -moz-text-size-adjust: none; -ms-text-size-adjust: none; -webkit-text-size-adjust:none; text-size-adjust:none;">Preview by Yahoo</span></div></td></tr><tr class="link-enhancr-element"><td class="link-enhancr-element" colspan="6" style="height:
1px; background-color: #e5e5e5;"><div class="link-enhancr-element" style="height: 1px; background-color: #e5e5e5;"></div></td></tr></tbody></table></div><div><br></div> <div style="font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-size: 14pt;"> <div style="font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-size: 12pt;"> <div dir="ltr"> <hr size="1"> <font size="2" face="Arial"> <b><span style="font-weight:bold;">From:</span></b> Personal Submersibles General Discussion <personal_submersibles@psubs.org><br> <b><span style="font-weight: bold;">To:</span></b> Personal Submersibles General Discussion <personal_submersibles@psubs.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Wednesday, April 16, 2014 5:25 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] K3000 spherical shell calculations<br> </font>
</div> <div class="y_msg_container"><br><div id="yiv0749113668">
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<div><font face="Arial" size="2">Hello everybody ,anybody, Les here , </font></div>
<div><font face="Arial" size="2">Attatched myself to this email for convenience
(similar subject) been away from psubs for quite some time wanting to start
again.</font></div>
<div><font face="Arial" size="2">Now it might sound dumb, but I tried to follow the
calc sheet for material and depth etc with ring stiffeners but ufortunately
had a few problems, perhaps a sample calc attached to it would assist me and
maybe others on how to use it correctly? </font></div>
<div><font face="Arial" size="2">In between time I do need to get a rough indication
of the thickness of steel and approx size
of ring stiffener size and quantity, to roughly calculate
the weight of what I wish to build, to see if what I want to do is
feasible or not...WEIGHT IS CRITICAL for my project </font></div>
<div><font face="Arial" size="2">Can anyone help me please my reqirements are;
</font></div>
<div><font face="Arial" size="2">A Sphere 2 meters diameter</font></div>
<div><font face="Arial" size="2">A Cylinder attached to that 1.2m diameter x 4meters
long</font></div>
<div><font face="Arial" size="2"> ( I understand there will be a flaring
attatchment to the sphere, however at this point for the exercise, just to calc
the min weight that would be possible on these two items would be an indicator
for me andd give me a mental appreciation of my limitations )</font></div>
<div><font face="Arial" size="2">The desired depth is 300m, ( 984ft )
( 452 psi ) or I could settle for 250 meters( 820ft ) ( 379 psi ) both
maximum dive depth not crush depth.</font></div>
<div><font face="Arial" size="2">Sorry to be pain but can any-one help me
</font></div>
<div><font face="Arial" size="2">Thank you </font></div>
<div><font face="Arial" size="2">Les</font></div>
<div><font face="Arial" size="2"></font> </div>
<div><font face="Arial" size="2">P.S. In for a penny in for a pound, guess I will
make myself look completely dumb ....just as an indication, with
something like the above how would I calculate the </font></div>
<div><font face="Arial" size="2"> volume
hence the size required for soft tanks for maximum submergance
</font></div>
<div><font face="Arial" size="2"></font> </div>
<div> </div>
<div> </div>
<div>----- Original Message ----- </div>
<blockquote style="PADDING-RIGHT:0px;PADDING-LEFT:5px;MARGIN-LEFT:5px;BORDER-LEFT:#000000 2px solid;MARGIN-RIGHT:0px;">
<div style="background-color: rgb(228, 228, 228); font-style: normal; font-variant: normal; font-weight: normal; font-size: 10pt; line-height: normal; font-family: arial; background-position: initial initial; background-repeat: initial initial;"><b>From:</b>
<a rel="nofollow" title="swaters@waters-ks.com" ymailto="mailto:swaters@waters-ks.com" target="_blank" href="mailto:swaters@waters-ks.com">swaters@waters-ks.com</a> </div>
<div style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 10pt; line-height: normal; font-family: arial;"><b>To:</b> <a rel="nofollow" title="personal_submersibles@psubs.org" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">Personal Submersibles General
Discussion</a> </div>
<div style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 10pt; line-height: normal; font-family: arial;"><b>Sent:</b> Tuesday, April 15, 2014 4:39
AM</div>
<div style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 10pt; line-height: normal; font-family: arial;"><b>Subject:</b> Re: [PSUBS-MAILIST] K3000
spherical shell calculations</div>
<div><br></div><span style="font-size: 10pt; color: rgb(0, 0, 0); font-family: Verdana;">
<div>Sean,</div>
<div>I don't believe I know the geometry. I guess in short term, I am looking
for the pros and cons on a deep submarine for cylinder with ribs
compared to a sphere. </div>
<div> </div>
<div>Thanks,</div>
<div>Scott Waters </div>
<div> </div>
<blockquote id="yiv0749113668replyBlockquote" style="padding-left: 8px; font-size: 10pt; margin-left: 8px; border-left-color: blue; border-left-width: 2px; border-left-style: solid; color: black; font-family: verdana;">
<div id="yiv0749113668wmQuoteWrapper">-------- Original Message --------<br>Subject: Re:
[PSUBS-MAILIST] K3000 spherical shell calculations<br>From: "Sean T.
Stevenson" <<a rel="nofollow" ymailto="mailto:cast55@telus.net" target="_blank" href="mailto:cast55@telus.net">cast55@telus.net</a>><br>Date: Mon, April
14, 2014 11:24 am<br>To: Personal Submersibles General Discussion<br><<a rel="nofollow" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br><br>
<div dir="ltr">At present, it will calculate stiffened cylindrical hulls in
the forward direction only. The optimization routine is not properly
constrained yet. If you already know the geometry you want to use, no
problem.</div>
<div dir="ltr">Sean<br></div>
<hr>
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<div>
</div><hr>
_______________________________________________<br>Personal_Submersibles
mailing
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