[PSUBS-MAILIST] Windows

[Jon Wallace]

GL has a nice table that can be used for calculating window thickness 
and appears to be just slightly more conservative than ABS although I 
haven't checked all possible combinations.  I may rewrite the flat 
viewport calculator based upon the GL table.  See Annex C, page C-4.


On 12/15/2013 4:17 PM, Jon Wallace wrote:
>
> It looks like GL has similar wording, depending upon actual usage and 
> detailed testing agreed to by GL a service life extension may be 
> granted.  For the person desiring a certified vessel I agree new 
> windows would probably be a cheaper route unless you were very sure 
> the existing windows would pass the required testing.  Scratches are a 
> no-no however so you really need to get them completely buffed out.  
> The heat produced in buffing may justify annealing however if the 
> windows were manufactured to PVHO standards there's a lot of safety 
> factor built in.
>
>
> On 12/15/2013 4:01 PM, hank pronk wrote:
>> Jon,
>> Yes, that is what I call the bible.  I just read on page 940 that ABS 
>> accepts the extrapolation method to determine remaining service life. 
>> The test is very extensive and for a flat disk window  it would 
>> probably be cheaper to buy new windows.  I did not see that re- 
>> annealing helps.
>> Hank
>>
>
>
>
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