>So, by panel expansion, or panel support, you mean that the panel is >carrying load along the grain? Or in other words, is distributing the >load out to other ribs? > >Phil Ford No, I mean that cross grain panel expansion (compression) is bowing the rib up against the string downbearing. It's the same thing that forms the crown in a CC board with flat ribs. Support of bearing with remaining positive crown by various crowning schemes: CC= panel supporting all the bearing+bending flat ribs into a crown. RC= panel supporting part of bearing with the crowned ribs supporting the rest RC&S=panel supporting very little of bearing, ribs supporting nearly all Ron N
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