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A board foot is a United States and Canadian unit of approximate volume, used for lumber. It is equivalent to 1 inch × 1 foot × 1 foot (144 cu in or 2,360 cm 3). It is also found in the unit of density pounds per board foot. In Australia and New Zealand the terms super foot or superficial foot were formerly used for this unit. The exact ...
[1] [2] [3] FIBCs are most often made of thick woven strands of oriented polypropylene, [4] either coated or uncoated, and normally measure around 45–48 inches (114–122 cm) in diameter and varies in height from 100 to 200 cm (39 to 79 inches). Its capacity is normally around 1,000 kg or 2,200 lb, but the larger units can store even more.
2,240 pounds (1,016.0 kilograms; 1.0160 metric tons) exactly 12% more than the 2,000 pounds of the North American short ton, being 20 long hundredweight (112 lb) rather than 20 short hundredweight (100 lb) the weight of 35 cubic feet (0.991 m 3) [2] of salt water with a density of 64 pounds per cubic foot (1.03 g/cm 3) [1]
The US survey foot is defined so that 1 metre is exactly 39.37 inches, making the international foot of 0.3048 metres exactly two parts per million shorter. This is a difference of just over 3.2 mm, or a little more than one-eighth of an inch per mile.
The modern American or US bushel is rounded to exactly 2150.42 cubic inches, a difference of less than one part per ten million. [ 5 ] In English use, a bushel was a round willow basket with fixed dimensions, and its inside measurements were as follows - base diameter 12 inches, top diameter 18 inches, height 12 inches - thus giving a volume of ...
Smaller units, on the other hand, are no longer standardized, leading to deviating lengths, like 8 ft (2.44 m) or 6 + 1 ⁄ 2 ft (1.98 m), with non-standard widths of 2.20 m / 86.6 in and 1.95 m / 76 + 3 ⁄ 4 in respectively, and non-standard heights of 2.26 m / 7 ft 5 in and 1.91 m / 6 ft 3.2 in respectively, [90] for storage or off-shore use.
The short ton (abbreviation tn [1]) is a measurement unit equal to 2,000 pounds (907.18 kg). It is commonly used in the United States, where it is known simply as a ton; [1] however, the term is ambiguous, the single word "ton" being variously used for short, long, and metric tons. The various tons are defined as units of mass. [2]
The density of quartz is around 2.65 g/cm 3 but the (dry) bulk density of a mineral soil is normally about half that density, between 1.0 and 1.6 g/cm 3. In contrast, soils rich in soil organic carbon and some friable clays tend to have lower bulk densities ( <1.0 g/cm 3 ) due to a combination of the low-density of the organic materials ...