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Tare weight , sometimes called unladen weight, is the weight of an empty vehicle or container. By subtracting tare weight from
gross weight In science and engineering, the weight of an object is the force acting on the object due to gravity. Some standard textbooks define weight as a vector quantity, the gravitational force acting on the object. Others define weight as a scalar qua ...
(
laden weight In science and engineering, the weight of an object is the force acting on the object due to gravity. Some standard textbooks define weight as a vector quantity, the gravitational force acting on the object. Others define weight as a scalar quan ...
), one can determine the weight of the goods carried or contained (the
net weight In science and engineering, the weight of an object is the force acting on the object due to gravity. Some standard textbooks define weight as a vector quantity, the gravitational force acting on the object. Others define weight as a scalar quan ...
).


Etymology

The word ''
tare Tare or Tares may refer to: * Tare (armour), a leg and groin protector used in a number of Japanese martial arts * Tare (surname), a surname * Tare (tufted grass), a genus of nine species of tufted grasses * Tare, Rwanda * Tare River, in Romania ...
'' originates from the
Middle French Middle French (french: moyen français) is a historical division of the French language that covers the period from the 14th to the 16th century. It is a period of transition during which: * the French language became clearly distinguished from t ...
word 'wastage in goods, deficiency, imperfection' (15th ), from
Italian Italian(s) may refer to: * Anything of, from, or related to the people of Italy over the centuries ** Italians, an ethnic group or simply a citizen of the Italian Republic or Italian Kingdom ** Italian language, a Romance language *** Regional Ita ...
, from
Arabic Arabic (, ' ; , ' or ) is a Semitic language spoken primarily across the Arab world.Semitic languages: an international handbook / edited by Stefan Weninger; in collaboration with Geoffrey Khan, Michael P. Streck, Janet C. E.Watson; Walter ...
, lit. 'thing deducted or rejected', from 'to reject'.


Usage

This can be useful in computing the cost of the goods carried for purposes of taxation or for tolls related to barge, rail, road, or other traffic, especially where the toll will vary with the value of the goods carried (''e.g.'', tolls on the
Erie Canal The Erie Canal is a historic canal in upstate New York that runs east-west between the Hudson River and Lake Erie. Completed in 1825, the canal was the first navigable waterway connecting the Atlantic Ocean to the Great Lakes, vastly reducing ...
). Tare weight is often published upon the sides of
railway car A railroad car, railcar (American and Canadian English), railway wagon, railway carriage, railway truck, railwagon, railcarriage or railtruck (British English and UIC), also called a train car, train wagon, train carriage or train truck, is a ...
s and transport vehicles to facilitate the computation of the load carried. Tare weight is also used in body composition assessment when doing underwater weighing. hydrostatic_weighing
">hydrostatic_weighing">hydrostatic_weighing
/ref> Tare_weight_is_accounted_for_in_kitchen_scales,_analytical_scale.html" ;"title="hydrostatic_weighing
.html" ;"title="hydrostatic weighing">hydrostatic weighing
">hydrostatic weighing">hydrostatic weighing
/ref> Tare weight is accounted for in kitchen scales, analytical scale">analytical (scientific) and other weighing scales which include a button that resets the display of the scales to zero when an empty container is placed on the weighing platform, in order subsequently to display only the weight of the contents of the container. :


See also

*
Curb weight Vehicle weight is a measurement of wheeled motor vehicles; either an actual measured weight of the vehicle under defined conditions or a gross weight rating for its weight carrying capacity. Curb or kerb weight Curb weight (U.S. English) or kerb ...
*
Dry weight Vehicle weight is a measurement of wheeled motor vehicles; either an actual measured weight of the vehicle under defined conditions or a gross weight rating for its weight carrying capacity. Curb or kerb weight Curb weight (U.S. English) or kerb ...
*
Gross vehicle weight rating Vehicle weight is a measurement of wheeled motor vehicles; either an actual measured weight of the vehicle under defined conditions or a gross weight rating for its weight carrying capacity. Curb or kerb weight Curb weight (U.S. English) or kerb ...
*
Hydrostatic weighing Hydrostatic weighing, also referred to as underwater weighing, hydrostatic body composition analysis and hydrodensitometry, is a technique for measuring the density of a living person's body. It is a direct application of Archimedes' principle, t ...
* Trett (obsolete)


References

* Yam, K. L., "Encyclopedia of Packaging Technology", John Wiley & Sons, 2009,
SOLAS: container weighing method 1 & 2
Mass Containers {{Measurement-stub