From: Patrick Rodgers <prodgers(--nospam--at)earthlink.net>
Date: Sun, 30 Jan 2000 19:58:01 -0800
Plywood is most likely an odd number of plies but there is 4 ply plywood out
there, and I believe 3 ply in addition to the 5 ply plywood.
Jason Emoto wrote:
> From: "James Allen"
> What is the definition of the strength axis of a plywood panel?
> Plywood is built up of an odd number of laminations of veneer that are
> "cross-laminated". In other words, each alternating layer is oriented
> perpendicular to its neighbors. When the stress is parallel to the long
> direction of the panel, there are more layers that are stressed parallel to
> grain and they are located farther from the neutral axis. Therefore, the
> panel is stronger in this direction.
> Jason Emoto