Plywood bow/flex calulation

[dagronk]

Hi All

I'm a first time poster, long time reader, so hi!
I'm based in Sydney, Australia, and woodwork has been a hobby of mine since childhood.

I've been trying to find some information regarding a calculation to measure dimensions of plywood to minimise bow over a distance.
For example, calculating how thick a piece would have to be if it is x wide, and y long, in order to minimise bow.
Of course there will be a limit to how effective this will be, and reinforcing will have to come in.

Any recommendations?

Thanks!

[Enfield Guy]

Here you go.
The Sagulator - Shelf Sag Calculator (http://www.woodbin.com/calcs/sagulator.htm)

[dagronk]

Hi Enfield Guy

That link is so much more than I could have asked for.
Thank you so much!

[Enfield Guy]

That's what we do here, help when we can.