Vectorply and Hexel have pretty good calculators, but only if you know the loads, resin/fibre ratios and suitable safety factors. Adding joists/stiffeners.furniture requires more analysis. Generally speaking, survey (Lloyds, ABS, etc) type rules are overkill, particularly for structures like harryproas which see smaller loads than say catamarans with stayed masts.
Impact loads are too varied to analyse. Either do some specific test panels or copy what everyone else does. There is a pretty good thread on Boat Design.net with lists of laminates, dimensions and sail areas for a variety of multis on https://www.boatdesign.net/threads/multihull-structure-thoughts.62361/
I'm trying to determine the composite foam thickness and glass roving for a bridge deck floor so I'm seeking what's commonly seen for narrow bridge decks of 18' long and 5' wide. The edges of the platform will have 4 sides of support, and a 2' joist spacing.
I've read on another forum the existence of a boat scantlings reference book available for traditional wood boats construction and I'm wondering if there's a comparable equivalent for composite foam boat construction?
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Posted by: Rob Denney <harryproa@gmail.com>
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