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<div class="moz-cite-prefix">On 2015-01-08 16:10,
<a class="moz-txt-link-abbreviated" href="mailto:swaters@waters-ks.com">swaters@waters-ks.com</a> via Personal_Submersibles wrote:<br>
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cite="mid:u9i47no297fgriqbvmjrm84i.1420758536604@email.android.com"
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<div>Cool. Thanks Vance. Yea, where I am stuck currently is the
pressure calcs on 516 gr 70. My question was how thick of 516 gr
70 for a 60" sphere would it have to be to handle 3300 feet
(2000 psi for safety margin. My second question is how positivly
or negatively boyant would that be. I can reaily get
hemispherical heads of 516 gr 70.</div>
<div>Thanks,</div>
<div>Scott Waters</div>
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<br>
Scott, rounding your desired working depth to 1000 m, here are the
results as per the ABS minimum requirements. Additional safety
factor is up to you:<br>
<br>
ASTM A516 Grade 70:<br>
<img src="cid:part1.03070703.07020305@telus.net" alt=""><br>
<br>
HY-100:<br>
<img src="cid:part2.03080500.06020707@telus.net" alt=""><br>
<br>
Sean<br>
<br>
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