From Wikipedia, the free encyclopedia
The short ton
is a unit of weight equal to 2,000 pounds (907.18474 kg).
In the United
States it is often called simply ton
without distinguishing it from the metric ton (tonne, 1,000 kilograms) or
the long ton
(2,240 pounds/1,016.0469088 kilograms); rather, the other two
are specifically noted. There are, however, some U.S. applications
for which unspecified tons normally means long tons (for
example, Navy ships)
or metric tons (world grain production figures).
Both the long and short ton are defined as 20 hundredweights, but
a hundredweight is 100 pounds (45.359237 kg) in the U.S. system (short or net
hundredweight) and 112 pounds (50.80234544 kg) in the Imperial system
(long or gross hundredweight).
The spelling tonne is from Gallic and French. The term applied to the barrel
of the largest size. In Old English the spelling was
tunne, "cask". A full
cask about 1 metre (39.4 in) high could easily weigh a
metric tonne, since the volume of the antiquated British wine cask
defined as 954 litres (210 imp gal; 252 US gal)
which for water (density = 1 g/cm3) amounts to as many
A short ton–force is 2,000 pounds-force
- Long ton,
2,240 lb (1,016.04691 kg).
- Tonne, also known as a
metric ton (t). 1,000 kg (2,204.6226218488 lb).
- Tonnage, volume
measurement used in maritime shipping. Originally based on
100 cubic feet (2.8316846592 m3).
- ^ a
"NIST Handbook 44
Specifications, Tolerances, and Other Technical Requirements for
Weighing and Measuring Devices, Appendix C: General Tables of Units
of Measurement". United States National Institute of Standards
and Technology. April 26, 2006. http://ts.nist.gov/WeightsAndMeasures/Publications/appxc.cfm. Retrieved October 13, 2008.
"20 hundredweights = 1 ton"
- ^ "Naval Architecture for
All". United States Bureau of Transportation Statistics. http://ntl.bts.gov/DOCS/narmain/narmain.html. Retrieved October 13,
. "Historically, a
very important and standard cargo for European sailing vessels was
wine, stored and shipped in casks called tuns. These tuns of wine,
because of their uniform size and their universal demand, became a
standard by which a ship's capacity could be measured. A tun of
wine weighed approximately 2,240 pounds, and occupied nearly 60
cubic feet." (Gillmer, Thomas (1975). Modern Ship Design.
United States Naval Institute.) "Today the ship designers standard
of weight is the long ton which is equal to 2,240 pounds."