[PSUBS-MAILIST] Scott's new sub

[Sean T. Stevenson via Personal_Submersibles]

On 2015-01-08 16:10, swaters at waters-ks.com via Personal_Submersibles wrote:
> 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.
> Thanks,
> Scott Waters

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:

ASTM A516 Grade 70:


HY-100:


Sean

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