[PSUBS-MAILIST] help interpreting ABS rules

[Jon Wallace via Personal_Submersibles]

Probably time to seek clarification from ABS.  Do you have a contact 
there; do you want me to find you one?
Jon


On 4/25/2015 3:11 PM, Sean T. Stevenson via Personal_Submersibles wrote:
> Jon - that was my original thinking, but then I noticed that the 
> second term in the Pn equation in 6/19.13 contains the L term, or 
> distance between non-heavy stiffeners, leading me to believe that this 
> second term might be a correction factor for stiffness of the 
> reinforced shell in between the heavy stiffeners, in which case it 
> would make sense that the I term is the non-heavy I.  Conceptually 
> this makes sense because the section is dealing with overall buckling 
> across the length between heavy stiffeners, which is resisted by the 
> mechanical properties of the shell reinforced with non-heavy 
> stiffeners.  Only the mention of heavy stiffeners as the limiting 
> extents of the collapse led me to originally assume the heavy I, which 
> I am now unsure of.
>
> Sean
>

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