page_title: Wood fuel
section_title: Measurement of firewood
hierarchical_section_title: Wood fuel / Measurement of firewood
caption_attribution_description: Aymar aru: Lawanaka. Žemaitėška: Berža malkas. Čeština: Palivové dřevo. English: Stapled birch wood. Esperanto: Ŝtippecoj en ŝtiparo. Polski: Drewno na opał.
context_page_description: Wood fuel is a fuel such as firewood, charcoal, chips, sheets, pellets, and sawdust. The particular form used depends upon factors such as source, quantity, quality and application. In many areas, wood is the most easily available form of fuel, requiring no tools in the case of picking up dead wood, or few tools, although as in any industry, specialized tools, such as skidders and hydraulic wood splitters, have been developed to mechanize production. Sawmill waste and construction industry by-products also include various forms of lumber tailings.
  The discovery of how to make fire for the purpose of burning wood is regarded as one of humanity's most important advances. The use of wood as a fuel source for heating is much older than civilization and is assumed to have been used by Neanderthals. Today, burning of wood is the largest use of energy derived from a solid fuel biomass. Wood fuel can be used for cooking and heating, and occasionally for fueling steam engines and steam turbines that generate electricity. Wood may be used indoors in a furnace, stove, or fireplace, or outdoors in furnace, campfire, or bonfire.
context_section_description: In the metric system, firewood is normally sold by the cubic metre or stere (1 m³ = ~0.276 cords).
  In the United States and Canada, firewood is usually sold by the cord, 128 ft³ (3.62 m³), corresponding to a woodpile 8 ft wide × 4 ft high of 4 ft-long logs. The cord is legally defined by statute in most U.S. states.  A "thrown cord" is firewood that has not been stacked and is defined as 4 ft wide x 4 ft tall x 10 ft long.  The additional volume is to make it equivalent to a standard stacked cord, where there is less void space.  It is also common to see wood sold by the "face cord", which is usually not legally defined, and varies from one area to another. For example, in one state a pile of wood 8 feet wide × 4 feet high of 16"-long logs will often be sold as a "face cord", though its volume is only one-third of a cord.  In another state, or even another area of the same state, the volume of a face cord may be considerably different.  Hence, it is risky to buy wood sold in this manner, as the transaction is not based on a legally enforceable unit of measure.
  In Australia, it is normally sold by the tonne but is commonly advertised as sold by the barrowload (wheelbarrow), bucket (1/3 of a m3 bucket of a typical skid-steer), ute-load or bag (roughly 15-20kg).
caption: Stapled birch wood
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