mike hide wrote:

"J" wrote in message
...
"mike hide" wrote in message
...
Basically only the strata that are in one direction are actually
contributing to the bending strength. So in terms of solid wood consider
it
as a sheet of wood half the thickness of the plywood .

Do you mean 4/7ths?
Plywood has a strong and a weak direction.
It is good to keep this in mind.

-j

why split hairs.... If you take my suggestions you are playing it
safe.....mjh

But overdesign has a cost as well...