Two questions I seem to get every day. Not that I think most peole need or really want these numbers but it give a concrete question and (possibly) a simple number to take away.
How much does that weigh?
How much will that cost me to build?
READ ON.
Preindustrial Craftsmanship 
count measure weigh…plumb level square…my mantra. It may not matter as much to the furniture maker, but if you plan to raise a timber frame by hand, it’s a really good idea to know how much it weighs. USFS wood handbook has all the tables and formulae, the rest is math (counting numbers, geometry, multiplication…stuff you should have learned in school). Rule of thumb (based on experience, not hearsay) is that joinery costs about 4x as much as the wood; that will cover labor at a decent rate and materials if you don’t make mistakes or stand around scratching your ass. It will not cover fussing over carving details, finishing, or overhead & profit.