Ordering lumber by the board foot

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Because the board foot is a unit of measurement that offers a standard way of totaling the volume of stock regardless of dimensions, it is commonly used when dealing with lumber. As shown at left, the standard board foot is equivalent to a piece that is 1 inch thick, 12 inches wide and 12 inches long. To calculate the number of board feet in a particular piece of wood, multiply its three dimensions together. Then divide the result by 144 if the dimensions are all in inches, or by 12 if one dimension is expressed in feet. For the standard board, the formula is: 1" x 12" x 12" -f 144= 1 (or 1" x 12" x 1' -f 12 = 1). So if you had an 8-foot-long l-by-3, you would calculate the board feet as follows: lx3x8-nl2 = 2(or 2 board feet). Other examples are shown in the illustration. Remember that board feet are calculated on the basis of nominal rather than actual sizes.




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Wood Working for Amateur Craftsman

Wood Working for Amateur Craftsman

THIS book is one of the series of Handbooks on industrial subjects being published by the Popular Mechanics Company. Like Popular Mechanics Magazine, and like the other books in this series, it is written so you can understand it. The purpose of Popular Mechanics Handbooks is to supply a growing demand for high-class, up-to-date and accurate text-books, suitable for home study as well as for class use, on all mechanical subjects. The textand illustrations, in each instance, have been prepared expressly for this series by well known experts, and revised by the editor of Popular Mechanics.

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