The cubic foot (symbol ft or cu ft ) is an imperial and US customary (non-metric) unit of volume , used in the United States and the United Kingdom. It is defined as the volume of a cube with sides of one foot ( 0.3048 m ) in length . Its volume is 28.3168 L (about 1 ⁄ 35 of a cubic metre ).
5-554: The hoppus cubic foot (or ‘hoppus cube’ or ‘h cu ft’) was the standard volume measurement used for timber in the British Empire and countries in the British sphere of influence before the introduction of metric units . It is still used in the hardwood trade in some countries. This volume measurement was developed to estimate what volume of a round log would be usable timber after processing, in effect attempting to ‘square’
10-786: The United States: The IEEE symbol for the cubic foot per second is ft /s. The following other abbreviations are also sometimes used: The flow or discharge of rivers, i.e., the volume of water passing a location per unit of time, is commonly expressed in units of cubic feet per second or cubic metres per second. Cusec is a unit of flow rate, used mostly in the United States in the context of water flow, particularly of rivers and canals. Conversions: 1 ft s = 0.0283168 m /s = 28.3168 L/s = 1.699011 m /min = 1,699.011 L/min The IEEE symbol for
15-399: The cubic foot per minute is ft /min. The following abbreviations are used: Cubic feet per minute is used to measure the amount of air that is being delivered, and is a common metric used for carburetors, pneumatic tools, and air-compressor systems. A standard cubic foot (abbreviated scf) is a measure of quantity of gas, sometimes defined in terms of standard temperature and pressure as
20-600: The log and allow for waste. The hoppus ton (HT) was also a traditionally used unit of volume in British forestry . One hoppus ton is equal to 50 hoppus feet or 1.8027 cubic meters. Some shipments of tropical hardwoods, especially shipments of teak from Myanmar (Burma), are still stated in hoppus tons. The English surveyor Edward Hoppus introduced the unit in his 1736 manual of practical calculations. The tables include reference to stone as well as timber, as stone can similarly suffer wastage during processing into regular pieces. The following calculation can be used to estimate
25-529: The usable timber in round logs using a "girth tape" that is calibrated in "quarter-girth inches" (e.g. that shows "12" when measuring a 48-inch-circumference log): Cubic foot The IEEE symbol for the cubic foot is ft . The following abbreviations are used: cubic feet, cubic foot, cubic ft, cu feet, cu foot, cu ft, cu.ft, cuft, cb ft, cb.ft, cbft, cbf, feet , foot , ft , feet/-3, foot/-3, ft/-3. Larger multiples are in common usage in commerce and industry in
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