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The stone or stone weight (abbreviation: st.) [1] is an English and British imperial unit of mass equal to 14 avoirdupois pounds (6.35 kg). [ nb 1 ] The stone continues in customary use in the United Kingdom and Ireland for body weight .
Monolith with bull, fox, and crane in low relief at Göbekli Tepe. The density of most stone is between 2 and 3 tons per cubic meter. Basalt weighs about 2.8 to 3.0 tons per cubic meter; granite averages about 2.75 metric tons per cubic meter; limestone, 2.7 metric tons per cubic meter; sandstone or marble, 2.5 tons per cubic meter.
The Ardblair Stones is a strength feat, where nine reinforced concrete lifting stones of ascending weight are used. [ 1 ] [ 2 ] The 9 stones weigh 18 kg (40 lb), 32 kg (71 lb), 41 kg (90 lb), 50 kg (110 lb), 75 kg (165 lb), 107 kg (236 lb), 118 kg (260 lb), 135 kg (298 lb) and 152 kg (335 lb) respectively. [ 3 ]
Armourstone is a generic term for broken stone with stone masses between 100 and 10,000 kilograms (220 and 22,050 lb) (very coarse aggregate) that is suitable for use in hydraulic engineering. Dimensions and characteristics for armourstone are laid down in European Standard EN13383. [ 1 ]
One of the measurements is the geometric index of reduction. There are two elements in this index: 't' and 'T'. The 'T' is the 'height' of maximum blank thickness and the 't' is the height of retouched scar from the ventral surface. The ratio between t and T is the geometric index of reduction. In theory this ratio shall range between 0 and 1. [3]
An overview of ranges of mass. To help compare different orders of magnitude, the following lists describe various mass levels between 10 −67 kg and 10 52 kg. The least massive thing listed here is a graviton, and the most massive thing is the observable universe.
The stone for tiles is most commonly marble, but often is granite, and sometimes limestone, slate, or quartz-based stone. Common colors are white and light earth colors. Much of the stone for this application is produced in Italy and China. Stone monuments include tombstones, grave markers or as mausoleums. After being gangsawed into big deep ...
In the early nineteenth century, there were no standard weight classes. In 1823, the Dictionary of the Vulgar Tongue said the limit for a "light weight" was 12 stone (168 lb, 76.2 kg) while Sportsman's Slang the same year gave 11 stone (154 lb, 69.9 kg) as the limit. [8]