Iso 12215-5 ?

[fcfc]

Reading this document Keels and Keels Again! ,

I found "Part 5 seems to be increasingly used with few problems, apart from a couple of known issues." (Conclusions page 11).

Has someone a clue abouts theses known issues in ISO 12215-5:2008 (the published standard).

Thanks.

[fcfc]

Nobody there ?

[TeddyDiver]

I tried to find out too so until further knowledge they remain as a couple of unknown issues,,

[fcfc]

Again, nobody there ?

[Ad Hoc]

fcfc

what part 5??....#5 is "General" on page 6, in my version

[fcfc]

I understood the text as Part 5 refering to ISO 12215-5:2008. Truncated preview available here http://www.boatdesign.net/forums/cla...215-5-2008.PDF and labelled as "Part 5 : Design pressures for monohulls, design stresses, scantlings determination"

[Ad Hoc]

The link appears to be broken..????...can't open it

[fcfc]

Perhaps http://www.saiglobal.com/PDFTemp/Pre...215-5-2008.PDF

Again, it is a truncated preview, ISO rules are not free.

[Ad Hoc]

Ah, ok i see what you mean now.

Well, in my copy of 12215-5:2008, this is on page 14,
section 8 is Design Pressures, with;
8.1 Motor craft design pressure...page 14;
8.2 Sailing craft design pressure...page 16;

and so on.

[fcfc]

My problem is the validation study document for part 9 (keels) says in its conclusion that document part 5 (design pressures) contains some "known issues".

"The problem of engaging industry encountered during the validation of part 5 continues, often for perfectly reasonable and well understood reasons. It is encouraging that despite the initial cries of despair, part 5 seems to be increasingly used with few problems apart a couple of known issues"

From the validation study of iso 12215 part 9 page 11, published march 27,2009, nearly one year after official publishing of iso 12215 part 5.

I would like to know what are theses "known issues" in the 12215-5 published norm. By the way, it seems that iso 12215-5:2008 has been published as a norm before the end of the validation process.

[Ad Hoc]

fcfc

Ive not come across that before, i generally don't use ISO rules. Only when requested by client. However, it would be worth contacting your Flag authority to clarify the issue of 'known issues'.

[foxy]

I'm not sure what the "known issues" are. I really haven't found anything that is a problem in section 5. Section 9 supercedes section 5 bottom pressures in the area of the keel. In terminology of ABS, this would be the area of the reinforced shell.

My understanding is that there is another meeting mid-November which will change section 9 again, the main change for keels is to eliminate the lower of the two grounding case critera.