On 09/09/2019 15:20, Harold Davis wrote:


Hi Tim,

Thanks for this. When you say short, do you mean across the width?
Mightn't that allow sag in the middle of the length?
yes, I meant across the width. The purpose is not to stiffen or
strengthen but to prevent cupping of the top (which we presume is solid
timber?? simply edge joined??) While allowing inevitable shrinkage
through drying.
Tim w