Hi Barry, you are right there is no validity
in his statement. Square welded mesh was used before twisted
wire netting (bird mesh). I have come across builders from time
to time using square welded mesh and fewer layers thinking it
is cheaper, it is, it is also weaker. Square welded when free
standing is stronger, but of lower impact resistance when integrated
in layers in a ferro hull. Many years of examining hulls damaged
by impact shows that the layers of welded mesh do not integrate
as well but remain as a sandwich, which tends to seperate easier
on impact. Having said that, it is still stronger than any regular
boat building medium other than steel plate, and is quite acceptable
as long as the same thickness and layers specified are used.
Substituting heavier thickness mesh/netting and reducing the
number of layers, considerably weakens the armature also.The
strength is in the diversity. Regards.
Colin Brookes...colb@xtra.co.nz |
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