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Max Hazelhurst wrote:
Can anyone assist me with the calculation for strip planking hull thickness...? We are embarking on a build of a 40ft ketch. Sounds like a large project to begin with. I know there is Dave Gerr's formulae for determining this but have not got his book (not available in SA). I intend exoxy glass in/out. Well, do get that book. It is available from on-line dealers that ship around the world. Gerr does give neat and simple formulas, but there too many factors to cover in a newsgroup post. Get that book! I think Herreshoff also published his scantling rules, but watch out, those were lighter, and assumed more qualified woodworking. Chapelle might have published scantling rules too, I don't remember. Larsson's and Eliasson's "Principles of Yacht Design" is a good modenr work that will tell you a lot. I know getting these books takes time and trouble. Reading and understanding even more so. I bet that time more than pays itself when you finally start building. And if you get your boat to sail, you sleep much better if you *know* that the construction is solid enough for your waters. If you are asking that kind of questions, I recommend a year of reading, and then a year or three of designing, before you start to chop wood... When you get to the concrete questions, ask again. I'm sure this group can help with many details. Good luck with the project! - Heikki (already at the design stage, for a 24' schooner) |
#2
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posted to rec.boats.building
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Hi all,
cool - thanks for the heads-up thusfar. I'll organize the book via the UK and take it from there. I have spec's to work against for the plans that I am working off - being the inquisitive sort, I want to understand the dynamics behind this and also investigate some alternative species that I may have access to here in S.Africa. I'll post my findings here for reference and comment. Thanks, M |
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