<html><head><meta content="text/html; charset=windows-1252" http-equiv="Content-Type" /><meta content="text/html; charset=windows-1252" http-equiv="Content-Type" /></head><body bgcolor="#FFFFFF" text="#000000"><p dir="ltr">The program isn't ready for public release, although the spherical shell module works fine. Before I release it, I'll add in the archaic units for the benefit of those in Myanmar, Liberia and the United States.</p>
<p dir="ltr">Sean<br>
</p>
<br><br><div class="gmail_quote">On May 1, 2015 9:56:00 AM MDT, Jon Wallace via Personal_Submersibles <personal_submersibles@psubs.org> wrote:<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
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Yes, I used .8 as the usage factor for a516-70. Until you know
what the minimum thickness of a formed head is the numbers have to
be considered approximate anyway. For example, .75 inch HY-100
will clearly get Scott where he wants to go, but I don't know if
that would require 1 inch plate or 1.25 inch plate to ensure a
minimum thickness of .75 inch after forming.<br />
<br />
I like your program Sean. Looks like there's a bug in it
though...everything displayed in metric. :) Where do I make a
"feature" request for english unit output?<br />
<br />
Jon<br />
<br />
<br />
On 5/1/2015 11:44 AM, Sean T. Stevenson via Personal_Submersibles
wrote:<br />
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<blockquote cite="mid:55439F54.60002@telus.net" type="cite">
FYI: This is for a 72" sphere with 1.25" thick material. Where
this may differ from Jon's calculation is that the Usage Factor,
eta, used in this program is 0.67 as specified by ABS. Jon
apparently used 0.8, which increases conservatism.<br />
<br />
Sean<br />
<br />
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