Board foot

Board foot

The board-foot is a specialized unit of volume for measuring lumber in the United States and Canada. It is the volume of a one foot length of a board one foot wide and one inch thick.

Board-foot is abbreviated FBM (for "foot, board measure"). The unit MFBM represents a thousand board-feet.

In Australia and New Zealand the term super foot or superficial foot was used to mean the same. [cite web
last = Rowlett
first = Russ
title = How Many? A Dictionary of Units of Measurement
url=http://www.unc.edu/~rowlett/units/dictS.html
accessdate = 2007-01-30 ] [cite web
last = Burger
first = Les
title = Cutting Timber on Springbrook in 1935
url=http://www.goldcoast.qld.gov.au/t_standard.aspx?PID=3398
accessdate = 2007-11-06] [cite web
last = Holgate
first = Alan
title = The Bendigo Monier Arch Bridges.
url=http://home.vicnet.net.au/~aholgate/jm/texts/bgobrshist.html
accessdate = 2007-11-06]

One board-foot equals:
* 1 ft × 1 ft × 1 in
* 12 in × 12 in × 1 in
* 144 in³
* 1⁄12 ft³
* 2360 cm³
* 2.360 liters
* 0.002360 cubic meters or steres

Board-feet are used for rough lumber (before drying and planing) with no adjustments.

For planed lumber, board-feet refer to the nominal thickness and width of lumber, calculated in principle on its size before drying and planing. Actual length is used.

See dimensional lumber for a full discussion of the relationship of actual and nominal dimensions. Briefly, for softwoods, to convert nominal to actual, subtract ¼ inch for dimensions under convert|2|in|mm; subtract ½ inch for dimensions under convert|8|in|mm; and subtract ¾ inch for larger measurements. The system is more complicated for hardwoods.

References

External links

* [http://lois.justice.gc.ca/en/showtdm/cs/W-6 Weights and Measures Act (Canada)]
* [http://lois.justice.gc.ca/en/ShowFullDoc/cs/S-12.55//20070911/en?command=searchadvanced&caller=AD&fragment=Board%20foot&search_type=exact&day=11&month=9&year=2007&search_domain=cs&showall=L&statuteyear=all&lengthannual=50&length=50 Board foot]
* [http://www.sawdustandshavings.com/wood_information/board_foot_calculator.asp Board Foot Calculator]


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Look at other dictionaries:

  • board foot — ☆ board foot n. pl. board feet a unit of linear measure of lumber, equal to a board one foot square and one inch thick …   English World dictionary

  • board foot — board′ foot n. bui the basic unit of board measure, equal to the cubic contents of a piece of lumber one foot square and one inch thick Abbr.: bd. ft. • Etymology: 1895–1900, amer …   From formal English to slang

  • board-foot — boardˈ foot noun A unit of boardˈ measure for timber, a piece one inch thick by 12 inches square • • • Main Entry: ↑board …   Useful english dictionary

  • board foot — (bd ft, fbm, or BF)    a unit of volume used for measuring lumber. One board foot is the volumeof a one foot length of a standard board twelve inches wide by one inchthick. Thus a board foot equals 144 cubic inches, or 1/12 of a cubic foot,or… …   Dictionary of units of measurement

  • board foot — noun the volume of a piece of wood 1 foot square and 1 inch thick • Hypernyms: ↑volume unit, ↑capacity unit, ↑capacity measure, ↑cubage unit, ↑cubic measure, ↑cubic content unit, ↑displacement unit, ↑cubature u …   Useful english dictionary

  • board foot — A unit of measure in the lumber trade, meaning a board one foot square and one inch thick. See board measure …   Ballentine's law dictionary

  • board foot — noun A board one square foot by one inch, about 2.36 liters …   Wiktionary

  • board foot — /ˈbɔd fʊt/ (say bawd foot) noun → superficial foot …  

  • board foot — Building Trades. a unit of measure equal to the cubic contents of a piece of lumber one foot square and one inch thick, used in measuring logs and lumber. Abbr.: bd. ft. [1895 1900, Amer.] * * * …   Universalium

  • board-foot — noun A unit of cubic measure for timber, equal to one foot square by one inch thick …   Wiktionary

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