Wood Shrinkage Calculator. Check out our lumber quantity calculator. To calculate wood shrinkage, all you need to know is the species of wood, board width, average annual change in moisture, and type of click here for the wood shrinkage / expansion calculator. Need help calculating how many board feet?
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Luckily getting ahead of the material and calculating wood shrinkage and expansion is fairly easy… Your wood must have reached equilibrium at this humidity for the calculator to work properly. A span is the distance between two intermediate supports for a structure. Need help calculating how many board feet? Span tables are used to size joists and rafters. Laboratory tests have been conducted for most commercial woods to. You must be signed in to access the calculator. Enter your clay's shrink rate, and the.