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(Jacques) wrote in message om...
About fiberglass splices.
Payson and Carnell miss an important point. They use plain woven glass
in which half of the fibers run paralell to the seam: a complete waste
of glass and resin.
The proper way to build such a seam is with biaxial 45/45. With that
type of glass, all the fibers work and it also adds a little torsional
strength.
I don't know why that point is not understood. I mentioned it for the
1st time here 12 years ago and designers still specify the wrong type
of glass for splices and stitch and glue seams.

Jacques from bateau.com

With all respect and understanding of your considerable advantage in
experience and education, I question.
I think that they missed no point, as if done as reccomended, most of
these joints and seams have at least two layers of cloth on either
side creating an area that is much stronger than the material it holds
to. If designed and built correctly I think the cloth is actually
overkill, so the biax may even be more overkill. Granted, your theory
is spot on as to the strengh of the two in lamination but I don't
think it is necessary in standard construction in smaller "typically
engineered" stitch and tape boats.
Now, I have seen plans out there that only use one layer or even none
with epoxy, I consider those inferior and somewhat lazy...
Scotty, who will consider telling you who I am after Jaques makes me
look like a noobie..