>"Look up your engineering handbook." > >I don't own one. Never opened one. Sure you do. It's online for download as a series of PDFs, or if you are like me and prefer an actual physical book, it's available at your local or internet book store. "The Encyclopedia of Wood" or "Wood Handbook: Wood as an Engineering Material" >I guess if I'm going to build a rib I need to start understanding what >effect various dimensions, etc. will have on its performance. Good plan. >"The paring (you might have a different term for it) at the ends of the >ribs...." > >Oh, you mean the taper of the rib from the maximum height in the middle >section to a lesser height near the ends. OK, gotcha. Feathering, I think. Ron N
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