mscres wrote:
Anyone can give a quick answer to Plywood Density? Or just average weight
per square foot of .5 in Plywood.
It seems my calculation to by boat weight is wrong.

Thanks in advance

If you are using locally supplied material all you have to do is take
the bathroom scales down to the lumberyeard and stand a sheet on the
scales on edge. That's what I did when I was desiging the cheap plywood
boats on my website ( www.ncf.ca/~ag384/Boats.htm ). There's some data
and formulae there on bending raduii. I discovered lauan underlayment
weighs the same as 5.22mm okume marine.