This article is from the Woodworking FAQ Collection 1, by multiple authors.
A board foot is a common unit used in the measurement of wood.
It is equal to 1 foot length x 1 foot width x 1 inch thick.
It should be noted that the thickness is nominal thickness.
After drying and surfacing the usual thickness of a 1 inch
board is 13/16.
A board 10 feet long x 1 foot wide x 2 inches thick would be
equal to 20 board feet.
 
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