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The gallon is a unit of volume in British imperial units and United States customary units.. The imperial gallon (imp gal) is defined as 4.546 09 litres, and is or was used in the United Kingdom and its former colonies, including Ireland, Canada, Australia, New Zealand, India, South Africa, Malaysia and some Caribbean countries, while the US gallon (US gal) is defined as 231 cubic inches (3. ...
Both the 42-US-gallon (159 L) barrels (based on the old English wine measure), the tierce (159 litres) and the 40-US-gallon (150 L) whiskey barrels were used. Also, 45-US-gallon (170 L) barrels were in common use. The 40 gallon whiskey barrel was the most common size used by early oil producers, since they were readily available at the time.
1 pound per square inch (psi) ≈ 6,895 Pa; Torque 1 pound-foot ≈ 1.356 N⋅m; Insulation 1 R-value (ft 2 ⋅°F⋅h/Btu) ≈ 0.1761 R SI (K⋅m 2 /W) Various combination units are in common use; these are straightforwardly defined based on the above basic units. Sizing systems are used for various items in commerce, several of which are U.S ...
[a] Originally defined as the volume of 10 pounds (4.54 kg) of distilled water (under certain conditions) [b], then redefined by the Weights and Measures Act 1985 to be exactly 4.546 09 L (≈277.42 cu in), the imperial gallon is 1.62% smaller than the pre-1824 ale gallon.
1.5 US gallons (5.7 litres) of ethanol has the same energy content as 1.0 US gal (3.8 L) of gasoline. The energy content of ethanol is 76,100 BTU/US gal (5.89 kilowatt-hours per litre), compared to 114,100 BTU/US gal (8.83 kWh/L) for gasoline. (see chart above)
4.5 gallons or 1 ⁄ 8 beer barrel Firkin 2 pins, 9 gallons (ale, beer or goods) or 1 ⁄ 4 beer barrel Kilderkin 2 firkins, 18 gallons or 1 ⁄ 2 beer barrel Beer barrel 2 kilderkins, 36 gallons or 2 ⁄ 3 beer hogshead Beer hogshead 3 kilderkins, 54 gallons or 1.5 beer barrels Beer pipe or butt 2 beer hogsheads, 3 beer barrels or 108 gallons ...
Many drums nominally measure just under 880 millimetres (35 in) tall with a diameter just under 610 millimetres (24 in), and have a common nominal volume of 208 litres (55 US gal) whereas the barrel volume of crude oil is 42 US gallons (159 L). In the United States, 25-US-gallon (95-litre) drums are also in common use and have the same height.
When the Tower system was abolished in the 16th century, the bushel was redefined as 56 avoirdupois pounds. The imperial bushel established by the Weights and Measures Act 1824 described the bushel as the volume of 80 avoirdupois pounds of distilled water in air at 62 °F (17 °C) [citation needed] or 8 imperial gallons. [1]